Jens Lehmann

According to our database, Jens Lehmann authored at least 352 papers between 2007 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2024

CLEP.

Vinay Srinivas Bharadhwaj, Mehdi Ali, Colin Birkenbihl, Sarah Mubeen, Jens Lehmann, Martin Hofmann-Apitius, Charles Tapley Hoyt, Daniel Domingo-Fernández

Dataset, March, 2024

A Self-Representation Learning Method for Unsupervised Feature Selection using Feature Space Basis.

Prayag Tiwari, Farid Saberi Movahed, Saeed Karami, Farshad Saberi-Movahed, Jens Lehmann, Sahar Vahdati

Trans. Mach. Learn. Res., 2024

Beyond Boundaries: A Human-like Approach for Question Answering over Structured and Unstructured Information Sources.

Jens Lehmann, Dhananjay Bhandiwad, Preetam Gattogi, Sahar Vahdati

Trans. Assoc. Comput. Linguistics, 2024

Deep Nonnegative Matrix Factorization with Joint Global and Local Structure Preservation.

Farid Saberi-Movahed, Bitasta Biswas, Prayag Tiwari, Jens Lehmann, Sahar Vahdati

Expert Syst. Appl., 2024

Enhancing Contextual Understanding in Large Language Models through Contrastive Decoding.

Zheng Zhao, Emilio Monti, Jens Lehmann, Haytham Assem

Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers), 2024

REXEL: An End-to-end Model for Document-Level Relation Extraction and Entity Linking.

Nacime Bouziani, Shubhi Tyagi, Joseph Fisher, Jens Lehmann, Andrea Pierleoni

Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies: Industry Track, 2024

Large Language Models for Scientific Question Answering: An Extensive Analysis of the SciQA Benchmark.

Jens Lehmann, Antonello Meloni, Enrico Motta, Francesco Osborne, Diego Reforgiato Recupero, Angelo Antonio Salatino, Sahar Vahdati

Proceedings of the Semantic Web - 21st International Conference, 2024

Investigating Multilingual Instruction-Tuning: Do Polyglot Models Demand for Multilingual Instructions?

Alexander Arno Weber, Klaudia Thellmann, Jan Ebert, Nicolas Flores-Herr, Jens Lehmann, Michael Fromm, Mehdi Ali

Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing, 2024

X-Vent: ICU Ventilation with Explainable Model-Based Reinforcement Learning.

Farhad Safaei, Milos Nenadovic, Jakob Wittenstein, Jens Lehmann, Sahar Vahdati

Proceedings of the ECAI 2024 - 27th European Conference on Artificial Intelligence, 19-24 October 2024, Santiago de Compostela, Spain, 2024

Knowledge GeoGebra: Leveraging Geometry of Relation Embeddings in Knowledge Graph Completion.

Kossi Amouzouvi, Bowen Song, Sahar Vahdati, Jens Lehmann

Proceedings of the 2024 Joint International Conference on Computational Linguistics, 2024

MATTER: Memory-Augmented Transformer Using Heterogeneous Knowledge Sources.

Dongkyu Lee, Chandana Satya Prakash, Jack FitzGerald, Jens Lehmann

Proceedings of the Findings of the Association for Computational Linguistics, 2024

2023

Efficient computation of comprehensive statistical information of large OWL datasets: a scalable approach.

Heba Mohamed, Said Fathalla, Jens Lehmann, Hajira Jabeen

Enterp. Inf. Syst., July, 2023

LogicENN: A Neural Based Knowledge Graphs Embedding Model With Logical Rules.

Mojtaba Nayyeri, Chengjin Xu, Mirza Mohtashim Alam, Jens Lehmann, Hamed Shariat Yazdi

IEEE Trans. Pattern Anal. Mach. Intell., June, 2023

SimE4KG: Distributed and Explainable Multi-Modal Semantic Similarity Estimation for Knowledge Graphs.

Carsten Felix Draschner, Hajira Jabeen, Jens Lehmann

Int. J. Semantic Comput., June, 2023

Geometric Algebra Based Embeddings for Static and Temporal Knowledge Graph Completion.

Chengjin Xu, Mojtaba Nayyeri, Yung-Yu Chen, Jens Lehmann

IEEE Trans. Knowl. Data Eng., May, 2023

Toward the Multilingual Semantic Web: Multilingual Ontology Matching and Assessment.

Shimaa Ibrahim, Said Fathalla, Jens Lehmann, Hajira Jabeen

IEEE Access, 2023

Integrating Knowledge Graph Embeddings and Pre-trained Language Models in Hypercomplex Spaces.

Mojtaba Nayyeri, Zihao Wang, Mst. Mahfuja Akter, Mirza Mohtashim Alam, Md. Rashad Al Hasan Rony, Jens Lehmann, Steffen Staab

Proceedings of the Semantic Web - ISWC 2023, 2023

ExPAD: An Explainable Distributed Automatic Anomaly Detection Framework over Large KGs.

Farshad Bakhshandegan Moghaddam, Jens Lehmann, Hajira Jabeen

Proceedings of the 17th IEEE International Conference on Semantic Computing, 2023

Distinct Geometrical Representations for Temporal and Relational Structures in Knowledge Graphs.

Bowen Song, Chengjin Xu, Kossi Amouzouvi, Maocai Wang, Jens Lehmann, Sahar Vahdati

Proceedings of the Machine Learning and Knowledge Discovery in Databases: Research Track, 2023

INVITE: a Testbed of Automatically Generated Invalid Questions to Evaluate Large Language Models for Hallucinations.

Anil Ramakrishna, Rahul Gupta, Jens Lehmann, Morteza Ziyadi

Proceedings of the Findings of the Association for Computational Linguistics: EMNLP 2023, 2023

mReFinED: An Efficient End-to-End Multilingual Entity Linking System.

Peerat Limkonchotiwat, Weiwei Cheng, Christos Christodoulopoulos, Amir Saffari, Jens Lehmann

Proceedings of the Findings of the Association for Computational Linguistics: EMNLP 2023, 2023

Language Models as Controlled Natural Language Semantic Parsers for Knowledge Graph Question Answering.

Jens Lehmann, Sébastien Ferré, Sahar Vahdati

Proceedings of the ECAI 2023 - 26th European Conference on Artificial Intelligence, September 30 - October 4, 2023, Kraków, Poland, 2023

Retention is All You Need.

Karishma Mohiuddin, Mirza Ariful Alam, Mirza Mohtashim Alam, Pascal Welke, Michael Martin, Jens Lehmann, Sahar Vahdati

Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, 2023

Anomaly Detection for Numerical Literals in Knowledge Graphs: A Short Review of Approaches.

Farshad Bakhshandegan Moghaddam, Jens Lehmann, Hajira Jabeen

Proceedings of the Sixth IEEE International Conference on Artificial Intelligence and Knowledge Engineering, 2023

Knowledge Graph Embeddings using Neural Ito Process: From Multiple Walks to Stochastic Trajectories.

Mojtaba Nayyeri, Bo Xiong, Majid Mohammadi, Mst. Mahfuja Akter, Mirza Mohtashim Alam, Jens Lehmann, Steffen Staab

Proceedings of the Findings of the Association for Computational Linguistics: ACL 2023, 2023

Direct Fact Retrieval from Knowledge Graphs without Entity Linking.

Jinheon Baek, Alham Fikri Aji, Jens Lehmann, Sung Ju Hwang

Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 2023

2022

Survey on English Entity Linking on Wikidata: Datasets and approaches.

Cedric Möller, Jens Lehmann, Ricardo Usbeck

Semantic Web, 2022

Bringing Light Into the Dark: A Large-Scale Evaluation of Knowledge Graph Embedding Models Under a Unified Framework.

Mehdi Ali, Max Berrendorf, Charles Tapley Hoyt, Laurent Vermue, Mikhail Galkin, Sahand Sharifzadeh, Asja Fischer, Volker Tresp, Jens Lehmann

IEEE Trans. Pattern Anal. Mach. Intell., 2022

Spatial concept learning and inference on geospatial polygon data.

Patrick Westphal, Tobias Grubenmann, Diego Collarana, Simon Bin, Lorenz Bühmann, Jens Lehmann

Knowl. Based Syst., 2022

An Answer Verbalization Dataset for Conversational Question Answerings over Knowledge Graphs.

Endri Kacupaj, Kuldeep Singh, Maria Maleshkova, Jens Lehmann

CoRR, 2022

Integrating Knowledge Graph embedding and pretrained Language Models in Hypercomplex Spaces.

Mojtaba Nayyeri, Zihao Wang, Mst. Mahfuja Akter, Mirza Mohtashim Alam, Md. Rashad Al Hasan Rony, Jens Lehmann, Steffen Staab

CoRR, 2022

Transformer with Tree-order Encoding for Neural Program Generation.

Klaudia-Doris Thellmann, Bernhard Stadler, Ricardo Usbeck, Jens Lehmann

CoRR, 2022

Language Model-driven Negative Sampling.

Mirza Mohtashim Alam, Md. Rashad Al Hasan Rony, Semab Ali, Jens Lehmann, Sahar Vahdati

CoRR, 2022

Time-aware Graph Neural Networks for Entity Alignment between Temporal Knowledge Graphs.

Chengjin Xu, Fenglong Su, Jens Lehmann

CoRR, 2022

SGPT: A Generative Approach for SPARQL Query Generation From Natural Language Questions.

Md. Rashad Al Hasan Rony, Uttam Kumar, Roman Teucher, Liubov Kovriguina, Jens Lehmann

IEEE Access, 2022

Tree-KGQA: An Unsupervised Approach for Question Answering Over Knowledge Graphs.

Md. Rashad Al Hasan Rony, Debanjan Chaudhuri, Ricardo Usbeck, Jens Lehmann

IEEE Access, 2022

Language Model Guided Knowledge Graph Embeddings.

Mirza Mohtashim Alam, Md. Rashad Al Hasan Rony, Mojtaba Nayyeri, Karishma Mohiuddin, M. S. T. Mahfuja Akter, Sahar Vahdati, Jens Lehmann

IEEE Access, 2022

Time-aware Entity Alignment using Temporal Relational Attention.

Chengjin Xu, Fenglong Su, Bo Xiong, Jens Lehmann

Proceedings of the WWW '22: The ACM Web Conference 2022, Virtual Event, Lyon, France, April 25, 2022

DistAD: A Distributed Generic Anomaly Detection Framework over Large KGs.

Farshad Bakhshandegan Moghaddam, Jens Lehmann, Hajira Jabeen

Proceedings of the 16th IEEE International Conference on Semantic Computing, 2022

DialoKG: Knowledge-Structure Aware Task-Oriented Dialogue Generation.

Md. Rashad Al Hasan Rony, Ricardo Usbeck, Jens Lehmann

Proceedings of the Findings of the Association for Computational Linguistics: NAACL 2022, 2022

Climate Bot: A Machine Reading Comprehension System for Climate Change Question Answering.

Md. Rashad Al Hasan Rony, Ying Zuo, Liubov Kovriguina, Roman Teucher, Jens Lehmann

Proceedings of the Thirty-First International Joint Conference on Artificial Intelligence, 2022

Improving Inductive Link Prediction Using Hyper-Relational Facts (Extended Abstract).

Mehdi Ali, Max Berrendorf, Mikhail Galkin, Veronika Thost, Tengfei Ma, Volker Tresp, Jens Lehmann

Proceedings of the Thirty-First International Joint Conference on Artificial Intelligence, 2022

Dihedron Algebraic Embeddings for Spatio-Temporal Knowledge Graph Completion.

Mojtaba Nayyeri, Sahar Vahdati, Md Tansen Khan, Mirza Mohtashim Alam, Lisa Wenige, Andreas Behrend, Jens Lehmann

Proceedings of the Semantic Web - 19th International Conference, 2022

Contrastive Representation Learning for Conversational Question Answering over Knowledge Graphs.

Endri Kacupaj, Kuldeep Singh, Maria Maleshkova, Jens Lehmann

Proceedings of the 31st ACM International Conference on Information & Knowledge Management, 2022

Ethical and Sustainability Considerations for Knowledge Graph based Machine Learning.

Carsten Felix Draschner, Hajira Jabeen, Jens Lehmann

Proceedings of the 5th IEEE International Conference on Artificial Intelligence and Knowledge Engineering, 2022

RoMe: A Robust Metric for Evaluating Natural Language Generation.

Md. Rashad Al Hasan Rony, Liubov Kovriguina, Debanjan Chaudhuri, Ricardo Usbeck, Jens Lehmann

Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 2022

2021

Introduction to neural network-based question answering over knowledge graphs.

Nilesh Chakraborty, Denis Lukovnikov, Gaurav Maheshwari, Priyansh Trivedi, Jens Lehmann, Asja Fischer

WIREs Data Mining Knowl. Discov., 2021

Analysing the evolution of computer science events leveraging a scholarly knowledge graph: a scientometrics study of top-ranked events in the past decade.

Arthur Lackner, Said Fathalla, Mojtaba Nayyeri, Andreas Behrend, Rainer Manthey, Sören Auer, Jens Lehmann, Sahar Vahdati

Scientometrics, 2021

Discover Relations in the Industry 4.0 Standards Via Unsupervised Learning on Knowledge Graph Embeddings.

Ariam Rivas, Irlán Grangel-González, Diego Collarana, Jens Lehmann, Maria-Esther Vidal

J. Data Intell., 2021

PyKEEN 1.0: A Python Library for Training and Evaluating Knowledge Graph Embeddings.

Mehdi Ali, Max Berrendorf, Charles Tapley Hoyt, Laurent Vermue, Sahand Sharifzadeh, Volker Tresp, Jens Lehmann

J. Mach. Learn. Res., 2021

Towards holistic Entity Linking: Survey and directions.

Italo Lopes Oliveira, Renato Fileto, René Speck, Luís Paulo F. Garcia, Diego Moussallem, Jens Lehmann

Inf. Syst., 2021

Trans4E: Link prediction on scholarly knowledge graphs.

Mojtaba Nayyeri, Gökce Müge Cil, Sahar Vahdati, Francesco Osborne, Mahfuzur Rahman, Simone Angioni, Angelo A. Salatino, Diego Reforgiato Recupero, Nadezhda Vassilyeva, Enrico Motta, Jens Lehmann

Neurocomputing, 2021

Semantic Answer Type and Relation Prediction Task (SMART 2021).

Nandana Mihindukulasooriya, Mohnish Dubey, Alfio Gliozzo, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Ricardo Usbeck, Gaetano Rossiello, Uttam Kumar

CoRR, 2021

Survey on English Entity Linking on Wikidata.

Cedric Möller, Jens Lehmann, Ricardo Usbeck

CoRR, 2021

Geolog: Scalable Logic Programming on Spatial Data.

Tobias Grubenmann, Jens Lehmann

Proceedings of the Proceedings 37th International Conference on Logic Programming (Technical Communications), 2021

VANiLLa : Verbalized Answers in Natural Language at Large Scale.

Debanjali Biswas, Mohnish Dubey, Md. Rashad Al Hasan Rony, Jens Lehmann

CoRR, 2021

Multiple Run Ensemble Learning withLow-Dimensional Knowledge Graph Embeddings.

Chengjin Xu, Mojtaba Nayyeri, Sahar Vahdati, Jens Lehmann

CoRR, 2021

CLEP: a hybrid data- and knowledge-driven framework for generating patient representations.

Vinay Srinivas Bharadhwaj, Mehdi Ali, Colin Birkenbihl, Sarah Mubeen, Jens Lehmann, Martin Hofmann-Apitius, Charles Tapley Hoyt, Daniel Domingo-Fernández

Bioinform., 2021

Link Prediction of Weighted Triples for Knowledge Graph Completion Within the Scholarly Domain.

Mojtaba Nayyeri, Gökce Müge Cil, Sahar Vahdati, Francesco Osborne, Andrey Kravchenko, Simone Angioni, Angelo A. Salatino, Diego Reforgiato Recupero, Enrico Motta, Jens Lehmann

IEEE Access, 2021

GeoWINE: Geolocation based Wiki, Image, News and Event Retrieval.

Golsa Tahmasebzadeh, Endri Kacupaj, Eric Müller-Budack, Sherzod Hakimov, Jens Lehmann, Ralph Ewerth

Proceedings of the SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2021

Improving Inductive Link Prediction Using Hyper-relational Facts.

Mehdi Ali, Max Berrendorf, Mikhail Galkin, Veronika Thost, Tengfei Ma, Volker Tresp, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2021 - 20th International Semantic Web Conference, 2021

DistSim - Scalable Distributed in-Memory Semantic Similarity Estimation for RDF Knowledge Graphs.

Carsten Felix Draschner, Jens Lehmann, Hajira Jabeen

Proceedings of the 15th IEEE International Conference on Semantic Computing, 2021

Embedding Knowledge Graphs Attentive to Positional and Centrality Qualities.

Afshin Sadeghi, Diego Collarana, Damien Graux, Jens Lehmann

Proceedings of the Machine Learning and Knowledge Discovery in Databases. Research Track, 2021

VOGUE: Answer Verbalization Through Multi-Task Learning.

Endri Kacupaj, Shyamnath Premnadh, Kuldeep Singh, Jens Lehmann, Maria Maleshkova

Proceedings of the Machine Learning and Knowledge Discovery in Databases. Research Track, 2021

Loss-Aware Pattern Inference: A Correction on the Wrongly Claimed Limitations of Embedding Models.

Mojtaba Nayyeri, Chengjin Xu, Yadollah Yaghoobzadeh, Sahar Vahdati, Mirza Mohtashim Alam, Hamed Shariat Yazdi, Jens Lehmann

Proceedings of the Advances in Knowledge Discovery and Data Mining, 2021

Relational Pattern Benchmarking on the Knowledge Graph Link Prediction Task.

Afshin Sadeghi, Hirra Malik, Diego Collarana, Jens Lehmann

Proceedings of the Neural Information Processing Systems Track on Datasets and Benchmarks 1, 2021

Temporal Knowledge Graph Completion using a Linear Temporal Regularizer and Multivector Embeddings.

Chengjin Xu, Yung-Yu Chen, Mojtaba Nayyeri, Jens Lehmann

Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, 2021

Semantic Web Analysis with Flavor of Micro-Services.

Farshad Bakhshandegan Moghaddam, Carsten Felix Draschner, Jens Lehmann, Hajira Jabeen

Proceedings of the 1st Ph.D. Workshop on Big Data Analytics co-located with the 3rd International Big Data Analytics Summer School (BDA 2021), 2021

Semantic Analytics in the Palm of your Browser.

Carsten Felix Draschner, Farshad Bakhshandegan Moghaddam, Jens Lehmann, Hajira Jabeen

Proceedings of the 1st Ph.D. Workshop on Big Data Analytics co-located with the 3rd International Big Data Analytics Summer School (BDA 2021), 2021

A Simulated Annealing Meta-heuristic for Concept Learning in Description Logics.

Patrick Westphal, Sahar Vahdati, Jens Lehmann

Proceedings of the Inductive Logic Programming - 30th International Conference, 2021

HORUS-NER: A Multimodal Named Entity Recognition Framework for Noisy Data.

Diego Esteves, José Marcelino, Piyush Chawla, Asja Fischer, Jens Lehmann

Proceedings of the Advances in Intelligent Data Analysis XIX, 2021

A Scalable Approach for Distributed Reasoning over Large-scale OWL Datasets.

Heba Mohamed, Said Fathalla, Jens Lehmann, Hajira Jabeen

Proceedings of the 13th International Joint Conference on Knowledge Discovery, 2021

BenchEmbedd: A FAIR Benchmarking tool forKnowledge Graph Embeddings.

Afshin Sadeghi, Xhulia Shahini, Martin Schmitz, Jens Lehmann

Proceedings of the Joint Proceedings of the Semantics co-located events: Poster&Demo track and Workshop on Ontology-Driven Conceptual Modelling of Digital Twins co-located with Semantics 2021, 2021

Literal2Feature: An Automatic Scalable RDF Graph Feature Extractor.

Farshad Bakhshandegan Moghaddam, Carsten Draschner, Jens Lehmann, Hajira Jabeen

Proceedings of the Further with Knowledge Graphs, 2021

A Virtual Knowledge Graph for Enabling Defect Traceability and Customer Service Analytics.

Nico Wilhelm, Diego Collarana, Jens Lehmann

Proceedings of the Semantic Web: ESWC 2021 Satellite Events, 2021

Context Transformer with Stacked Pointer Networks for Conversational Question Answering over Knowledge Graphs.

Joan Plepi, Endri Kacupaj, Kuldeep Singh, Harsh Thakkar, Jens Lehmann

Proceedings of the Semantic Web - 18th International Conference, 2021

ParaQA: A Question Answering Dataset with Paraphrase Responses for Single-Turn Conversation.

Endri Kacupaj, Barshana Banerjee, Kuldeep Singh, Jens Lehmann

Proceedings of the Semantic Web - 18th International Conference, 2021

Grounding Dialogue Systems via Knowledge Graph Aware Decoding with Pre-trained Transformers.

Debanjan Chaudhuri, Md. Rashad Al Hasan Rony, Jens Lehmann

Proceedings of the Semantic Web - 18th International Conference, 2021

Time-aware Graph Neural Network for Entity Alignment between Temporal Knowledge Graphs.

Chengjin Xu, Fenglong Su, Jens Lehmann

Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, 2021

Proxy Indicators for the Quality of Open-domain Dialogues.

Rostislav Nedelchev, Jens Lehmann, Ricardo Usbeck

Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, 2021

Knowledge Graph Representation Learning using Ordinary Differential Equations.

Mojtaba Nayyeri, Chengjin Xu, Franca Hoffmann, Mirza Mohtashim Alam, Jens Lehmann, Sahar Vahdati

Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, 2021

Pattern-Aware and Noise-Resilient Embedding Models.

Mojtaba Nayyeri, Sahar Vahdati, Emanuel Sallinger, Mirza Mohtashim Alam, Hamed Shariat Yazdi, Jens Lehmann

Proceedings of the Advances in Information Retrieval, 2021

CHOLAN: A Modular Approach for Neural Entity Linking on Wikipedia and Wikidata.

Manoj Prabhakar Kannan Ravi, Kuldeep Singh, Isaiah Onando Mulang', Saeedeh Shekarpour, Johannes Hoffart, Jens Lehmann

Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume, 2021

Conversational Question Answering over Knowledge Graphs with Transformer and Graph Attention Networks.

Endri Kacupaj, Joan Plepi, Kuldeep Singh, Harsh Thakkar, Jens Lehmann, Maria Maleshkova

Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume, 2021

DistRDF2ML - Scalable Distributed In-Memory Machine Learning Pipelines for RDF Knowledge Graphs.

Carsten Felix Draschner, Claus Stadler, Farshad Bakhshandegan Moghaddam, Jens Lehmann, Hajira Jabeen

Proceedings of the CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1, 2021

Space Efficient Context Encoding for Non-Task-Oriented Dialogue Generation with Graph Attention Transformer.

Fabian Galetzka, Jewgeni Rose, David Schlangen, Jens Lehmann

Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing, 2021

5* Knowledge Graph Embeddings with Projective Transformations.

Mojtaba Nayyeri, Sahar Vahdati, Can Aykul, Jens Lehmann

Proceedings of the Thirty-Fifth AAAI Conference on Artificial Intelligence, 2021

2020

IQA: Interactive query construction in semantic question answering systems.

Hamid Zafar, Mohnish Dubey, Jens Lehmann, Elena Demidova

J. Web Semant., 2020

Schema-agnostic SPARQL-driven faceted search benchmark generation.

Claus Stadler, Simon Bin, Lisa Wenige, Lorenz Bühmann, Jens Lehmann

J. Web Semant., 2020

No one is perfect: Analysing the performance of question answering components over the DBpedia knowledge graph.

Kuldeep Singh, Ioanna Lytra, Arun Sethupat Radhakrishna, Saeedeh Shekarpour, Maria-Esther Vidal, Jens Lehmann

J. Web Semant., 2020

IOTA: Interlinking of heterogeneous multilingual open fiscal DaTA.

Fathoni A. Musyaffa, Maria-Esther Vidal, Fabrizio Orlandi, Jens Lehmann, Hajira Jabeen

Expert Syst. Appl., 2020

SeMantic AnsweR Type prediction task (SMART) at ISWC 2020 Semantic Web Challenge.

Nandana Mihindukulasooriya, Mohnish Dubey, Alfio Gliozzo, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Ricardo Usbeck

CoRR, 2020

Motif Learning in Knowledge Graphs Using Trajectories Of Differential Equations.

Mojtaba Nayyeri, Chengjin Xu, Jens Lehmann, Sahar Vahdati

CoRR, 2020

Improving the Long-Range Performance of Gated Graph Neural Networks.

Denis Lukovnikov, Jens Lehmann, Asja Fischer

CoRR, 2020

End-to-End Entity Linking and Disambiguation leveraging Word and Knowledge Graph Embeddings.

Rostislav Nedelchev, Debanjan Chaudhuri, Jens Lehmann, Asja Fischer

CoRR, 2020

3D Learning and Reasoning in Link Prediction Over Knowledge Graphs.

Mojtaba Nayyeri, Mirza Mohtashim Alam, Jens Lehmann, Sahar Vahdati

IEEE Access, 2020

OWLStats: Distributed Computation of OWL Dataset Statistics.

Heba Mohamed, Said Fathalla, Jens Lehmann, Hajira Jabeen

Proceedings of the IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology, 2020

Multilingual Ontology Merging Using Cross-lingual Matching.

Shimaa Ibrahim, Said Fathalla, Jens Lehmann, Hajira Jabeen

Proceedings of the IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology, 2020

Temporal Knowledge Graph Completion Based on Time Series Gaussian Embedding.

Chenjin Xu, Mojtaba Nayyeri, Fouad Alkhoury, Hamed Shariat Yazdi, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2020, 2020

CASQAD - A New Dataset for Context-Aware Spatial Question Answering.

Jewgeni Rose, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2020, 2020

Fantastic Knowledge Graph Embeddings and How to Find the Right Space for Them.

Mojtaba Nayyeri, Chengjin Xu, Sahar Vahdati, Nadezhda Vassilyeva, Emanuel Sallinger, Hamed Shariat Yazdi, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2020, 2020

PNEL: Pointer Network Based End-To-End Entity Linking over Knowledge Graphs.

Debayan Banerjee, Debanjan Chaudhuri, Mohnish Dubey, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2020, 2020

Let's build Bridges, not Walls: SPARQL Querying of TinkerPop Graph Databases with Sparql-Gremlin.

Harsh Thakkar, Renzo Angles, Marko Rodriguez, Stephen Mallette, Jens Lehmann

Proceedings of the IEEE 14th International Conference on Semantic Computing, 2020

DISE: A Distributed in-Memory SPARQL Processing Engine over Tensor Data.

Hajira Jabeen, Eskender Haziiev, Gezim Sejdiu, Jens Lehmann

Proceedings of the IEEE 14th International Conference on Semantic Computing, 2020

Treating Dialogue Quality Evaluation as an Anomaly Detection Problem.

Rostislav Nedelchev, Ricardo Usbeck, Jens Lehmann

Proceedings of The 12th Language Resources and Evaluation Conference, 2020

Let the Margin SlidE^± for Knowledge Graph Embeddings via a Correntropy Objective Function.

Mojtaba Nayyeri, Xiaotian Zhou, Sahar Vahdati, Reza Izanloo, Hamed Shariat Yazdi, Jens Lehmann

Proceedings of the 2020 International Joint Conference on Neural Networks, 2020

Meta-hyperband: Hyperparameter Optimization with Meta-learning and Coarse-to-Fine.

Samin Payrosangari, Afshin Sadeghi, Damien Graux, Jens Lehmann

Proceedings of the Intelligent Data Engineering and Automated Learning - IDEAL 2020, 2020

Cross-administration comparative analysis of open fiscal data.

Fathoni A. Musyaffa, Jens Lehmann, Hajira Jabeen

Proceedings of the ICEGOV 2020: 13th International Conference on Theory and Practice of Electronic Governance, 2020

Semantic Representation of Physics Research Data.

Aysegul Say, Said Fathalla, Sahar Vahdati, Jens Lehmann, Sören Auer

Proceedings of the 12th International Joint Conference on Knowledge Discovery, 2020

A Distributed Approach for Parsing Large-scale OWL Datasets.

Heba Mohamed, Said Fathalla, Jens Lehmann, Hajira Jabeen

Proceedings of the 12th International Joint Conference on Knowledge Discovery, 2020

MINDS: A Translator to Embed Mathematical Expressions Inside SPARQL Queries.

Damien Graux, Gezim Sejdiu, Claus Stadler, Giulio Napolitano, Jens Lehmann

Proceedings of the Semantic Systems. In the Era of Knowledge Graphs, 2020

Embedding-Based Recommendations on Scholarly Knowledge Graphs.

Mojtaba Nayyeri, Sahar Vahdati, Xiaotian Zhou, Hamed Shariat Yazdi, Jens Lehmann

Proceedings of the Semantic Web - 17th International Conference, 2020

VQuAnDa: Verbalization QUestion ANswering DAtaset.

Endri Kacupaj, Hamid Zafar, Jens Lehmann, Maria Maleshkova

Proceedings of the Semantic Web - 17th International Conference, 2020

A Neural-based model to Predict the Future Natural Gas Market Price through Open-domain Event Extraction.

Minh Triet Chau, Diego Esteves, Jens Lehmann

Proceedings of the 1st International Workshop on Cross-lingual Event-centric Open Analytics co-located with the 17th Extended Semantic Web Conference (ESWC 2020), 2020

Training Multimodal Systems for Classification with Multiple Objectives.

Jason Armitage, Shramana Thakur, Rishi Tripathi, Maria Maleshkova, Jens Lehmann

Proceedings of the 1st International Workshop on Cross-lingual Event-centric Open Analytics co-located with the 17th Extended Semantic Web Conference (ESWC 2020), 2020

Affinity Dependent Negative Sampling for Knowledge Graph Embeddings.

Mirza Mohtashim Alam, Hajira Jabeen, Mehdi Ali, Karishma Mohiuddin, Jens Lehmann

Proceedings of the Workshop on Deep Learning for Knowledge Graphs (DL4KG2020) co-located with the 17th Extended Semantic Web Conference 2020 (ESWC 2020), Heraklion, Greece, June 02, 2020, 2020

Ontology Design for Pharmaceutical Research Outcomes.

Zeynep Say, Said Fathalla, Sahar Vahdati, Jens Lehmann, Sören Auer

Proceedings of the Digital Libraries for Open Knowledge, 2020

Message Passing for Hyper-Relational Knowledge Graphs.

Mikhail Galkin, Priyansh Trivedi, Gaurav Maheshwari, Ricardo Usbeck, Jens Lehmann

Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing, 2020

Distantly Supervised Question Parsing.

Hamid Zafar, Maryam Tavakol, Jens Lehmann

Proceedings of the ECAI 2020 - 24th European Conference on Artificial Intelligence, 29 August-8 September 2020, Santiago de Compostela, Spain, August 29 - September 8, 2020, 2020

Multiple Run Ensemble Learning with Low Dimensional Knowledge Graph Embeddings.

Chengjin Xu, Mojtaba Nayyeri, Sahar Vahdati, Jens Lehmann

Proceedings of the International Workshop on Knowledge Representation and Representation Learning co-located with the 24th European Conference on Artificial Intelligence (ECAI 2020), 2020

MDE: Multiple Distance Embeddings for Link Prediction in Knowledge Graphs.

Afshin Sadeghi, Damien Graux, Hamed Shariat Yazdi, Jens Lehmann

Proceedings of the ECAI 2020 - 24th European Conference on Artificial Intelligence, 29 August-8 September 2020, Santiago de Compostela, Spain, August 29 - September 8, 2020, 2020

The Effect of Rule Injectionin a Leakage Free Dataset.

Mirza Mohtashim Alam, Mojtaba Nayyeri, Chengjin Xu, Md. Rashad Al Hasan Rony, Hamed Shariat Yazdi, Afshin Sadeghi, Jens Lehmann

Proceedings of the International Workshop on Knowledge Representation and Representation Learning co-located with the 24th European Conference on Artificial Intelligence (ECAI 2020), 2020

Unveiling Relations in the Industry 4.0 Standards Landscape Based on Knowledge Graph Embeddings.

Ariam Rivas, Irlán Grangel-González, Diego Collarana, Jens Lehmann, Maria-Esther Vidal

Proceedings of the Database and Expert Systems Applications, 2020

Knowledge Graph Embeddings in Geometric Algebras.

Chengjin Xu, Mojtaba Nayyeri, Yung-Yu Chen, Jens Lehmann

Proceedings of the 28th International Conference on Computational Linguistics, 2020

TeRo: A Time-aware Knowledge Graph Embedding via Temporal Rotation.

Chengjin Xu, Mojtaba Nayyeri, Fouad Alkhoury, Hamed Shariat Yazdi, Jens Lehmann

Proceedings of the 28th International Conference on Computational Linguistics, 2020

Language Model Transformers as Evaluators for Open-domain Dialogues.

Rostislav Nedelchev, Jens Lehmann, Ricardo Usbeck

Proceedings of the 28th International Conference on Computational Linguistics, 2020

Evaluating the Impact of Knowledge Graph Context on Entity Disambiguation Models.

Isaiah Onando Mulang', Kuldeep Singh, Chaitali Prabhu, Abhishek Nadgeri, Johannes Hoffart, Jens Lehmann

Proceedings of the CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, 2020

MLM: A Benchmark Dataset for Multitask Learning with Multiple Languages and Modalities.

Jason Armitage, Endri Kacupaj, Golsa Tahmasebzadeh, Swati, Maria Maleshkova, Ralph Ewerth, Jens Lehmann

Proceedings of the CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, 2020

AutoChef: Automated Generation of Cooking Recipes.

Hajira Jabeen, Jonas Weinz, Jens Lehmann

Proceedings of the IEEE Congress on Evolutionary Computation, 2020

2019

TISCO: Temporal scoping of facts.

Anisa Rula, Matteo Palmonari, Simone Rubinacci, Axel-Cyrille Ngonga Ngomo, Jens Lehmann, Andrea Maurino, Diego Esteves

J. Web Semant., 2019

SML-Bench - A benchmarking framework for structured machine learning.

Patrick Westphal, Lorenz Bühmann, Simon Bin, Hajira Jabeen, Jens Lehmann

Semantic Web, 2019

New label noise injection methods for the evaluation of noise filters.

Luís Paulo F. Garcia, Jens Lehmann, André C. P. L. F. de Carvalho, Ana Carolina Lorena

Knowl. Based Syst., 2019

How Complex Is Your Classification Problem?: A Survey on Measuring Classification Complexity.

Ana Carolina Lorena, Luís Paulo F. Garcia, Jens Lehmann, Marcílio Carlos Pereira de Souto, Tin Kam Ho

ACM Comput. Surv., 2019

Open-domain Event Extraction and Embedding for Natural Gas Market Prediction.

Minh Triet Chau, Diego Esteves, Jens Lehmann

CoRR, 2019

Context-aware Entity Linking with Attentive Neural Networks on Wikidata Knowledge Graph.

Isaiah Onando Mulang', Kuldeep Singh, Akhilesh Vyas, Saeedeh Shekarpour, Ahmad Sakor, Maria-Esther Vidal, Sören Auer, Jens Lehmann

CoRR, 2019

Direct Mappings between RDF and Property Graph Databases.

Harsh Thakkar, Renzo Angles, Dominik Tomaszuk, Jens Lehmann

CoRR, 2019

Temporal Knowledge Graph Embedding Model based on Additive Time Series Decomposition.

Chengjin Xu, Mojtaba Nayyeri, Fouad Alkhoury, Jens Lehmann, Hamed Shariat Yazdi

CoRR, 2019

The Query Translation Landscape: a Survey.

Mohamed Nadjib Mami, Damien Graux, Harsh Thakkar, Simon Scerri, Sören Auer, Jens Lehmann

CoRR, 2019

Method for the semantic indexing of concept hierarchies, uniform representation, use of relational database systems and generic and case-based reasoning.

Uwe Petersohn, Sandra Zimmer, Jens Lehmann

CoRR, 2019

MDP-based Shallow Parsing in Distantly Supervised QA Systems.

Hamid Zafar, Maryam Tavakol, Jens Lehmann

CoRR, 2019

On the Knowledge Graph Completion Using Translation Based Embedding: The Loss Is as Important as the Score.

Mojtaba Nayyeri, Chengjin Xu, Yadollah Yaghoobzadeh, Hamed Shariat Yazdi, Jens Lehmann

CoRR, 2019

LogicENN: A Neural Based Knowledge Graphs Embedding Model with Logical Rules.

Mojtaba Nayyeri, Chengjin Xu, Jens Lehmann, Hamed Shariat Yazdi

CoRR, 2019

Towards Optimisation of Collaborative Question Answering over Knowledge Graphs.

Kuldeep Singh, Mohamad Yaser Jaradeh, Saeedeh Shekarpour, Akash Kulkarni, Arun Sethupat Radhakrishna, Ioanna Lytra, Maria-Esther Vidal, Jens Lehmann

CoRR, 2019

Introduction to Neural Network based Approaches for Question Answering over Knowledge Graphs.

Nilesh Chakraborty, Denis Lukovnikov, Gaurav Maheshwari, Priyansh Trivedi, Jens Lehmann, Asja Fischer

CoRR, 2019

Adaptive Margin Ranking Loss for Knowledge Graph Embeddings via a Correntropy Objective Function.

Mojtaba Nayyeri, Xiaotian Zhou, Sahar Vahdati, Hamed Shariat Yazdi, Jens Lehmann

CoRR, 2019

MDE: Multi Distance Embeddings for Link Prediction in Knowledge Graphs.

Afshin Sadeghi, Damien Graux, Jens Lehmann

CoRR, 2019

Soft Marginal TransE for Scholarly Knowledge Graph Completion.

Mojtaba Nayyeri, Sahar Vahdati, Jens Lehmann, Hamed Shariat Yazdi

CoRR, 2019

BioKEEN: a library for learning and evaluating biological knowledge graph embeddings.

Mehdi Ali, Charles Tapley Hoyt, Daniel Domingo-Fernández, Jens Lehmann, Hajira Jabeen

Bioinform., 2019

Sparklify: A Scalable Software Component for Efficient Evaluation of SPARQL Queries over Distributed RDF Datasets.

Claus Stadler, Gezim Sejdiu, Damien Graux, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2019, 2019

Querying Large-scale RDF Datasets Using the SANSA Framework.

Claus Stadler, Gezim Sejdiu, Damien Graux, Jens Lehmann

Proceedings of the ISWC 2019 Satellite Tracks (Posters & Demonstrations, 2019

QaldGen: Towards Microbenchmarking of Question Answering Systems over Knowledge Graphs.

Kuldeep Singh, Muhammad Saleem, Abhishek Nadgeri, Felix Conrads, Jeff Z. Pan, Axel-Cyrille Ngonga Ngomo, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2019, 2019

A Scalable Framework for Quality Assessment of RDF Datasets.

Gezim Sejdiu, Anisa Rula, Jens Lehmann, Hajira Jabeen

Proceedings of the Semantic Web - ISWC 2019, 2019

Microbenchmarks for Question Answering Systems Using QaldGen.

Qaiser Mehmood, Abhishek Nadgeri, Muhammad Saleem, Kuldeep Singh, Axel-Cyrille Ngonga Ngomo, Jens Lehmann

Proceedings of the ISWC 2019 Satellite Tracks (Posters & Demonstrations, 2019

Squerall: Virtual Ontology-Based Access to Heterogeneous and Large Data Sources.

Mohamed Nadjib Mami, Damien Graux, Simon Scerri, Hajira Jabeen, Sören Auer, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2019, 2019

How to Feed the Squerall with RDF and Other Data Nuts?

Mohamed Nadjib Mami, Damien Graux, Simon Scerri, Hajira Jabeen, Sören Auer, Jens Lehmann

Proceedings of the ISWC 2019 Satellite Tracks (Posters & Demonstrations, 2019

Learning to Rank Query Graphs for Complex Question Answering over Knowledge Graphs.

Gaurav Maheshwari, Priyansh Trivedi, Denis Lukovnikov, Nilesh Chakraborty, Asja Fischer, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2019, 2019

Pretrained Transformers for Simple Question Answering over Knowledge Graphs.

Denis Lukovnikov, Asja Fischer, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2019, 2019

Incorporating Literals into Knowledge Graph Embeddings.

Agustinus Kristiadi, Mohammad Asif Khan, Denis Lukovnikov, Jens Lehmann, Asja Fischer

Proceedings of the Semantic Web - ISWC 2019, 2019

DBpedia FlexiFusion the Best of Wikipedia > Wikidata > Your Data.

Johannes Frey, Marvin Hofer, Daniel Obraczka, Jens Lehmann, Sebastian Hellmann

Proceedings of the Semantic Web - ISWC 2019, 2019

LC-QuAD 2.0: A Large Dataset for Complex Question Answering over Wikidata and DBpedia.

Mohnish Dubey, Debayan Banerjee, Abdelrahman Abdelkawi, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2019, 2019

Using a KG-Copy Network for Non-goal Oriented Dialogues.

Debanjan Chaudhuri, Md. Rashad Al Hasan Rony, Simon Jordan, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2019, 2019

The KEEN Universe - An Ecosystem for Knowledge Graph Embeddings with a Focus on Reproducibility and Transferability.

Mehdi Ali, Hajira Jabeen, Charles Tapley Hoyt, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2019, 2019

Predicting Missing Links Using PyKEEN.

Mehdi Ali, Charles Tapley Hoyt, Daniel Domingo-Fernández, Jens Lehmann

Proceedings of the ISWC 2019 Satellite Tracks (Posters & Demonstrations, 2019

Linking Physicians to Medical Research Results via Knowledge Graph Embeddings and Twitter.

Afshin Sadeghi, Jens Lehmann

Proceedings of the Machine Learning and Knowledge Discovery in Databases, 2019

Improving Access to Science for Social Good.

Mehdi Ali, Sahar Vahdati, Shruti Singh, Sourish Dasgupta, Jens Lehmann

Proceedings of the Machine Learning and Knowledge Discovery in Databases, 2019

Complex Query Augmentation for Question Answering over Knowledge Graphs.

Abdelrahman Abdelkawi, Hamid Zafar, Maria Maleshkova, Jens Lehmann

Proceedings of the On the Move to Meaningful Internet Systems: OTM 2019 Conferences, 2019

Old is Gold: Linguistic Driven Approach for Entity and Relation Linking of Short Text.

Ahmad Sakor, Isaiah Onando Mulang', Kuldeep Singh, Saeedeh Shekarpour, Maria-Esther Vidal, Jens Lehmann, Sören Auer

Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, 2019

Uniform Access to Multiform Data Lakes using Semantic Technologies.

Mohamed Nadjib Mami, Damien Graux, Simon Scerri, Hajira Jabeen, Sören Auer, Jens Lehmann

Proceedings of the 21st International Conference on Information Integration and Web-based Applications & Services, 2019

Scalable Distributed Genetic Algorithm Using Apache Spark (S-GA).

Fahad Maqbool, Muhammad Saad Razzaq, Jens Lehmann, Hajira Jabeen

Proceedings of the Intelligent Computing Theories and Application, 2019

The Hubs and Authorities Transaction Network Analysis using the SANSA framework.

Danning Sui, Gezim Sejdiu, Damien Graux, Jens Lehmann

Proceedings of the Posters and Demo Track of the 15th International Conference on Semantic Systems co-located with 15th International Conference on Semantic Systems (SEMANTiCS 2019), Karlsruhe, Germany, September 9th - to, 2019

Towards a Scalable Semantic-Based Distributed Approach for SPARQL Query Evaluation.

Gezim Sejdiu, Damien Graux, Imran Khan, Ioanna Lytra, Hajira Jabeen, Jens Lehmann

Proceedings of the Semantic Systems. The Power of AI and Knowledge Graphs, 2019

From Monolingual to Multilingual Ontologies: The Role of Cross-Lingual Ontology Enrichment.

Shimaa Ibrahim, Said Fathalla, Hamed Shariat Yazdi, Jens Lehmann, Hajira Jabeen

Proceedings of the Semantic Systems. The Power of AI and Knowledge Graphs, 2019

EvoChef: Show Me What to Cook! Artificial Evolution of Culinary Arts.

Hajira Jabeen, Nargis Tahara, Jens Lehmann

Proceedings of the Computational Intelligence in Music, Sound, Art and Design, 2019

Incorporating Joint Embeddings into Goal-Oriented Dialogues with Multi-task Learning.

Firas Kassawat, Debanjan Chaudhuri, Jens Lehmann

Proceedings of the Semantic Web - 16th International Conference, 2019

OECM: A Cross-Lingual Approach for Ontology Enrichment.

Shimaa Ibrahim, Said Fathalla, Hamed Shariat Yazdi, Jens Lehmann, Hajira Jabeen

Proceedings of the Semantic Web: ESWC 2019 Satellite Events, 2019

Clustering Pipelines of Large RDF POI Data.

Rajjat Dadwal, Damien Graux, Gezim Sejdiu, Hajira Jabeen, Jens Lehmann

Proceedings of the Semantic Web: ESWC 2019 Satellite Events, 2019

SimpleLSTM: A Deep-Learning Approach to Simple-Claims Classification.

Piyush Chawla, Diego Esteves, Karthik Pujar, Jens Lehmann

Proceedings of the Progress in Artificial Intelligence, 2019

Pay for Performance in Electronic Data Capture for Clinical Trials and Medical Registries.

Sattar Rahimbayli, Jens Lehmann, Thomas M. Deserno

Proceedings of the ICT for Health Science Research - Proceedings of the EFMI 2019 Special Topic Conference, 2019

Big POI data integration with Linked Data technologies.

Spiros Athanasiou, Giorgos Giannopoulos, Damien Graux, Nikos Karagiannakis, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Kostas Patroumpas, Mohamed Ahmed Sherif, Dimitrios Skoutas

Proceedings of the Advances in Database Technology, 2019

2018

Wikidata through the eyes of DBpedia.

Ali Ismayilov, Dimitris Kontokostas, Sören Auer, Jens Lehmann, Sebastian Hellmann

Semantic Web, 2018

Detecting Linked Data quality issues via crowdsourcing: A DBpedia study.

Maribel Acosta, Amrapali Zaveri, Elena Simperl, Dimitris Kontokostas, Fabian Flöck, Jens Lehmann

Semantic Web, 2018

Toward Veracity Assessment in RDF Knowledge Bases: An Exploratory Analysis.

Diego Esteves, Anisa Rula, Aniketh Janardhan Reddy, Jens Lehmann

ACM J. Data Inf. Qual., 2018

Translating Natural Language to SQL using Pointer-Generator Networks and How Decoding Order Matters.

Denis Lukovnikov, Nilesh Chakraborty, Jens Lehmann, Asja Fischer

CoRR, 2018

Improving Response Selection in Multi-turn Dialogue Systems.

Debanjan Chaudhuri, Agustinus Kristiadi, Jens Lehmann, Asja Fischer

CoRR, 2018

Formal Ontology Learning from English IS-A Sentences.

Sourish Dasgupta, Ankur Padia, Gaurav Maheshwari, Priyansh Trivedi, Jens Lehmann

CoRR, 2018

Killing Two Birds with One Stone - Querying Property Graphs using SPARQL via GREMLINATOR.

Harsh Thakkar, Dharmen Punjani, Jens Lehmann, Sören Auer

CoRR, 2018

A Stitch in Time Saves Nine - SPARQL querying of Property Graphs using Gremlin Traversals.

Harsh Thakkar, Dharmen Punjani, Yashwant Keswani, Jens Lehmann, Sören Auer

CoRR, 2018

Structured Knowledge on the Web 7.0.

Steffen Staab, Jens Lehmann, Ruben Verborgh

Proceedings of the Companion of the The Web Conference 2018 on The Web Conference 2018, 2018

Why Reinvent the Wheel: Let's Build Question Answering Systems Together.

Kuldeep Singh, Arun Sethupat Radhakrishna, Andreas Both, Saeedeh Shekarpour, Ioanna Lytra, Ricardo Usbeck, Akhilesh Vyas, Akmal Khikmatullaev, Dharmen Punjani, Christoph Lange, Maria-Esther Vidal, Jens Lehmann, Sören Auer

Proceedings of the 2018 World Wide Web Conference on World Wide Web, 2018

DL-Learner Structured Machine Learning on Semantic Web Data.

Lorenz Bühmann, Jens Lehmann, Patrick Westphal, Simon Bin

Proceedings of the Companion of the The Web Conference 2018 on The Web Conference 2018, 2018

STATisfy Me: What Are My Stats?

Gezim Sejdiu, Ivan Ermilov, Mohamed Nadjib Mami, Jens Lehmann

Proceedings of the ISWC 2018 Posters & Demonstrations, Industry and Blue Sky Ideas Tracks co-located with 17th International Semantic Web Conference (ISWC 2018), Monterey, USA, October 8th - to, 2018

DistLODStats: Distributed Computation of RDF Dataset Statistics.

Gezim Sejdiu, Ivan Ermilov, Jens Lehmann, Mohamed Nadjib Mami

Proceedings of the Semantic Web - ISWC 2018, 2018

EARL: Joint Entity and Relation Linking for Question Answering over Knowledge Graphs.

Mohnish Dubey, Debayan Banerjee, Debanjan Chaudhuri, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2018, 2018

Joint Entity and Relation Linking Using EARL.

Debayan Banerjee, Mohnish Dubey, Debanjan Chaudhuri, Jens Lehmann

Proceedings of the ISWC 2018 Posters & Demonstrations, Industry and Blue Sky Ideas Tracks co-located with 17th International Semantic Web Conference (ISWC 2018), Monterey, USA, October 8th - to, 2018

Generating SPARQL Query Containment Benchmarks Using the SQCFramework.

Muhammad Saleem, Qaiser Mehmood, Claus Stadler, Jens Lehmann, Axel-Cyrille Ngonga Ngomo

Proceedings of the ISWC 2018 Posters & Demonstrations, Industry and Blue Sky Ideas Tracks co-located with 17th International Semantic Web Conference (ISWC 2018), Monterey, USA, October 8th - to, 2018

Deep Query Ranking for Question Answering over Knowledge Bases.

Hamid Zafar, Giulio Napolitano, Jens Lehmann

Proceedings of the Machine Learning and Knowledge Discovery in Databases, 2018

A Question Answering System on Regulatory Documents.

Diego Collarana, Timm Heuss, Jens Lehmann, Ioanna Lytra, Gaurav Maheshwari, Rostislav Nedelchev, Thorsten Schmidt, Priyansh Trivedi

Proceedings of the Legal Knowledge and Information Systems, 2018

Efficiently Pinpointing SPARQL Query Containments.

Claus Stadler, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo, Jens Lehmann

Proceedings of the Web Engineering - 18th International Conference, 2018

SPIRIT: A Semantic Transparency and Compliance Stack.

Patrick Westphal, Javier D. Fernández, Sabrina Kirrane, Jens Lehmann

Proceedings of the Posters and Demos Track of the 14th International Conference on Semantic Systems co-located with the 14th International Conference on Semantic Systems (SEMANTiCS 2018), 2018

Profiting from Kitties on Ethereum: Leveraging Blockchain RDF with SANSA.

Damien Graux, Gezim Sejdiu, Hajira Jabeen, Jens Lehmann, Danning Sui, Dominik Muhs, Johannes Pfeffer

Proceedings of the Posters and Demos Track of the 14th International Conference on Semantic Systems co-located with the 14th International Conference on Semantic Systems (SEMANTiCS 2018), 2018

Two for one: querying property graph databases using SPARQL via gremlinator.

Harsh Thakkar, Dharmen Punjani, Jens Lehmann, Sören Auer

Proceedings of the 1st ACM SIGMOD Joint International Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA), 2018

Formal Query Generation for Question Answering over Knowledge Bases.

Hamid Zafar, Giulio Napolitano, Jens Lehmann

Proceedings of the Semantic Web - 15th International Conference, 2018

Belittling the Source: Trustworthiness Indicators to Obfuscate Fake News on the Web.

Diego Esteves, Aniketh Janardhan Reddy, Piyush Chawla, Jens Lehmann

Proceedings of the First Workshop on Fact Extraction and VERification, 2018

KnIGHT: Mapping Privacy Policies to GDPR.

Najmeh Mousavi Nejad, Simon Scerri, Jens Lehmann

Proceedings of the Knowledge Engineering and Knowledge Management, 2018

Divided We Stand Out! Forging Cohorts fOr Numeric Outlier Detection in Large Scale Knowledge Graphs (CONOD).

Hajira Jabeen, Rajjat Dadwal, Gezim Sejdiu, Jens Lehmann

Proceedings of the Knowledge Engineering and Knowledge Management, 2018

Improving Response Selection in Multi-Turn Dialogue Systems by Incorporating Domain Knowledge.

Debanjan Chaudhuri, Agustinus Kristiadi, Jens Lehmann, Asja Fischer

Proceedings of the 22nd Conference on Computational Natural Language Learning, 2018

2017

Survey on challenges of Question Answering in the Semantic Web.

Konrad Höffner, Sebastian Walter, Edgard Marx, Ricardo Usbeck, Jens Lehmann, Axel-Cyrille Ngonga Ngomo

Semantic Web, 2017

Using Multi-Label Classification for Improved Question Answering.

Ricardo Usbeck, Michael Hoffmann, Michael Röder, Jens Lehmann, Axel-Cyrille Ngonga Ngomo

CoRR, 2017

Neural Network-based Question Answering over Knowledge Graphs on Word and Character Level.

Denis Lukovnikov, Asja Fischer, Jens Lehmann, Sören Auer

Proceedings of the 26th International Conference on World Wide Web, 2017

LDOW2017: 10th Workshop on Linked Data on the Web.

Jens Lehmann, Sören Auer, Sarven Capadisli, Krzysztof Janowicz, Christian Bizer, Tom Heath, Aidan Hogan, Tim Berners-Lee

Proceedings of the 26th International Conference on World Wide Web Companion, 2017

LOG4MEX: a library to export machine learning experiments.

Diego Esteves, Diego Moussallem, Tommaso Soru, Ciro Baron Neto, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Julio Cesar Duarte

Proceedings of the International Conference on Web Intelligence, 2017

LC-QuAD: A Corpus for Complex Question Answering over Knowledge Graphs.

Priyansh Trivedi, Gaurav Maheshwari, Mohnish Dubey, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2017, 2017

A Vocabulary-Independent Generation Framework for DBpedia and Beyond.

Ben De Meester, Anastasia Dimou, Wouter Maroy, Dimitris Kontokostas, Ruben Verborgh, Jens Lehmann, Erik Mannens, Sebastian Hellmann

Proceedings of the ISWC 2017 Posters & Demonstrations and Industry Tracks co-located with 16th International Semantic Web Conference (ISWC 2017), Vienna, Austria, October 23rd - to, 2017

Sustainable Linked Data Generation: The Case of DBpedia.

Wouter Maroy, Anastasia Dimou, Dimitris Kontokostas, Ben De Meester, Ruben Verborgh, Jens Lehmann, Erik Mannens, Sebastian Hellmann

Proceedings of the Semantic Web - ISWC 2017, 2017

How to Revert Question Answering on Knowledge Graphs.

Gaurav Maheshwari, Mohnish Dubey, Priyansh Trivedi, Jens Lehmann

Proceedings of the ISWC 2017 Posters & Demonstrations and Industry Tracks co-located with 16th International Semantic Web Conference (ISWC 2017), Vienna, Austria, October 23rd - to, 2017

Distributed Semantic Analytics Using the SANSA Stack.

Jens Lehmann, Gezim Sejdiu, Lorenz Bühmann, Patrick Westphal, Claus Stadler, Ivan Ermilov, Simon Bin, Nilesh Chakraborty, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo, Hajira Jabeen

Proceedings of the Semantic Web - ISWC 2017, 2017

The Tale of Sansa Spark.

Ivan Ermilov, Jens Lehmann, Gezim Sejdiu, Lorenz Bühmann, Patrick Westphal, Claus Stadler, Simon Bin, Nilesh Chakraborty, Henning Petzka, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo, Hajira Jabeen

Proceedings of the ISWC 2017 Posters & Demonstrations and Industry Tracks co-located with 16th International Semantic Web Conference (ISWC 2017), Vienna, Austria, October 23rd - to, 2017

Iguana: A Generic Framework for Benchmarking the Read-Write Performance of Triple Stores.

Felix Conrads, Jens Lehmann, Muhammad Saleem, Mohamed Morsey, Axel-Cyrille Ngonga Ngomo

Proceedings of the Semantic Web - ISWC 2017, 2017

Benchmarking RDF Storage Solutions with IGUANA.

Felix Conrads, Jens Lehmann, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo

Proceedings of the ISWC 2017 Posters & Demonstrations and Industry Tracks co-located with 16th International Semantic Web Conference (ISWC 2017), Vienna, Austria, October 23rd - to, 2017

Torpedo: Improving the State-of-the-Art RDF Dataset Slicing.

Edgard Marx, Saeedeh Shekarpour, Tommaso Soru, Adrian M. P. Brasoveanu, Muhammad Saleem, Ciro Baron, Albert Weichselbraun, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Sören Auer

Proceedings of the 11th IEEE International Conference on Semantic Computing, 2017

Managing Lifecycle of Big Data Applications.

Ivan Ermilov, Axel-Cyrille Ngonga Ngomo, Aad Versteden, Hajira Jabeen, Gezim Sejdiu, Giorgos Argyriou, Luigi Selmi, Jürgen Jakobitsch, Jens Lehmann

Proceedings of the Knowledge Engineering and Semantic Web - 8th International Conference, 2017

SQCFramework: SPARQL Query Containment Benchmark Generation Framework.

Muhammad Saleem, Claus Stadler, Qaiser Mehmood, Jens Lehmann, Axel-Cyrille Ngonga Ngomo

Proceedings of the Knowledge Capture Conference, 2017

SimDoc: Topic Sequence Alignment based Document Similarity Framework.

Gaurav Maheshwari, Priyansh Trivedi, Harshita Sahijwani, Kunal Jha, Sourish Dasgupta, Jens Lehmann

Proceedings of the Knowledge Capture Conference, 2017

Named Entity Recognition in Twitter Using Images and Text.

Diego Esteves, Rafael Peres, Jens Lehmann, Giulio Napolitano

Proceedings of the Current Trends in Web Engineering, 2017

The BigDataEurope Platform - Supporting the Variety Dimension of Big Data.

Sören Auer, Simon Scerri, Aad Versteden, Erika Pauwels, Angelos Charalambidis, Stasinos Konstantopoulos, Jens Lehmann, Hajira Jabeen, Ivan Ermilov, Gezim Sejdiu, Andreas Ikonomopoulos, Spyros Andronopoulos, Mandy Vlachogiannis, Charalambos Pappas, Athanasios Davettas, Iraklis A. Klampanos, Efstathios Grigoropoulos, Vangelis Karkaletsis, Victor de Boer, Ronald Siebes, Mohamed Nadjib Mami, Sergio Albani, Michele Lazzarini, Paulo Nunes, Emanuele Angiuli, Nikiforos Pittaras, George Giannakopoulos, Giorgos Argyriou, George Stamoulis, George Papadakis, Manolis Koubarakis, Pythagoras Karampiperis, Axel-Cyrille Ngonga Ngomo, Maria-Esther Vidal

Proceedings of the Web Engineering - 17th International Conference, 2017

Trying Not to Die Benchmarking: Orchestrating RDF and Graph Data Management Solution Benchmarks Using LITMUS.

Harsh Thakkar, Yashwant Keswani, Mohnish Dubey, Jens Lehmann, Sören Auer

Proceedings of the 13th International Conference on Semantic Systems, 2017

Benchmarking Faceted Browsing Capabilities of Triplestores.

Henning Petzka, Claus Stadler, Georgios Katsimpras, Bastian Haarmann, Jens Lehmann

Proceedings of the 13th International Conference on Semantic Systems, 2017

JPA Criteria Queries over RDF Data.

Claus Stadler, Jens Lehmann

Proceedings of the Joint Proceedings of the 2nd RDF Stream Processing (RSP 2017) and the Querying the Web of Data (QuWeDa 2017) Workshops co-located with 14th ESWC 2017 (ESWC 2017), Portoroz, Slovenia, May 28th - to, 2017

Wombat - A Generalization Approach for Automatic Link Discovery.

Mohamed Ahmed Sherif, Axel-Cyrille Ngonga Ngomo, Jens Lehmann

Proceedings of the Semantic Web - 14th International Conference, 2017

Big Data Europe.

Hajira Jabeen, Phil Archer, Simon Scerri, Aad Versteden, Ivan Ermilov, Giannis Mouchakis, Jens Lehmann, Sören Auer

Proceedings of the Workshops of the EDBT/ICDT 2017 Joint Conference (EDBT/ICDT 2017), 2017

Implementing scalable structured machine learning for big data in the SAKE project.

Simon Bin, Patrick Westphal, Jens Lehmann, Axel Ngonga

Proceedings of the 2017 IEEE International Conference on Big Data (IEEE BigData 2017), 2017

2016

DL-Learner - A framework for inductive learning on the Semantic Web.

Lorenz Bühmann, Jens Lehmann, Patrick Westphal

J. Web Semant., 2016

Quality assessment for Linked Data: A Survey.

Amrapali Zaveri, Anisa Rula, Andrea Maurino, Ricardo Pietrobon, Jens Lehmann, Sören Auer

Semantic Web, 2016

LinkedSpending: OpenSpending becomes Linked Open Data.

Konrad Höffner, Michael Martin, Jens Lehmann

Semantic Web, 2016

LITMUS: An Open Extensible Framework for Benchmarking RDF Data Management Solutions.

Harsh Thakkar, Mohnish Dubey, Gezim Sejdiu, Axel-Cyrille Ngonga Ngomo, Jeremy Debattista, Christoph Lange, Jens Lehmann, Sören Auer, Maria-Esther Vidal

CoRR, 2016

Lion's Den: feeding the LinkLion.

Mohamed Ahmed Sherif, Mofeed Mohamed Hassan, Tommaso Soru, Axel-Cyrille Ngonga Ngomo, Jens Lehmann

Proceedings of the 11th International Workshop on Ontology Matching co-located with the 15th International Semantic Web Conference (ISWC 2016), 2016

CubeQA - Question Answering on RDF Data Cubes.

Konrad Höffner, Jens Lehmann, Ricardo Usbeck

Proceedings of the Semantic Web - ISWC 2016, 2016

LODStats: The Data Web Census Dataset.

Ivan Ermilov, Jens Lehmann, Michael Martin, Sören Auer

Proceedings of the Semantic Web - ISWC 2016, 2016

DBpedia Mappings Quality Assessment.

Anastasia Dimou, Dimitris Kontokostas, Markus Freudenberg, Ruben Verborgh, Jens Lehmann, Erik Mannens, Sebastian Hellmann

Proceedings of the ISWC 2016 Posters & Demonstrations Track co-located with 15th International Semantic Web Conference (ISWC 2016), 2016

Exploring Term Networks for Semantic Search over RDF Knowledge Graphs.

Edgard Marx, Konrad Höffner, Saeedeh Shekarpour, Axel-Cyrille Ngonga Ngomo, Jens Lehmann, Sören Auer

Proceedings of the Metadata and Semantics Research - 10th International Conference, 2016

MEX Interfaces: Automating Machine Learning Metadata Generation.

Diego Esteves, Pablo N. Mendes, Diego Moussallem, Julio Cesar Duarte, Amrapali Zaveri, Jens Lehmann

Proceedings of the 12th International Conference on Semantic Systems, 2016

DBtrends: Publishing and Benchmarking RDF Ranking Functions.

Edgard Marx, Amrapali Zaveri, Mofeed Mohamed Hassan, Sandro Rautenberg, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Gong Cheng

Proceedings of the 2nd International Workshop on Summarizing and Presenting Entities and Ontologies (SumPre 2016) co-located with the 13th Extended Semantic Web Conference (ESWC 2016), 2016

Semantically Enhanced Quality Assurance in the JURION Business Use Case.

Dimitris Kontokostas, Christian Mader, Christian Dirschl, Katja Eck, Michael Leuthold, Jens Lehmann, Sebastian Hellmann

Proceedings of the Semantic Web. Latest Advances and New Domains, 2016

AskNow: A Framework for Natural Language Query Formalization in SPARQL.

Mohnish Dubey, Sourish Dasgupta, Ankit Sharma, Konrad Höffner, Jens Lehmann

Proceedings of the Semantic Web. Latest Advances and New Domains, 2016

ACRyLIQ: Leveraging DBpedia for Adaptive Crowdsourcing in Linked Data Quality Assessment.

Umair ul Hassan, Amrapali Zaveri, Edgard Marx, Edward Curry, Jens Lehmann

Proceedings of the Knowledge Engineering and Knowledge Management, 2016

Integrating New Refinement Operators in Terminological Decision Trees Learning.

Giuseppe Rizzo, Nicola Fanizzi, Jens Lehmann, Lorenz Bühmann

Proceedings of the Knowledge Engineering and Knowledge Management, 2016

Towards SPARQL-Based Induction for Large-Scale RDF Data Sets.

Simon Bin, Lorenz Bühmann, Jens Lehmann, Axel-Cyrille Ngonga Ngomo

Proceedings of the ECAI 2016 - 22nd European Conference on Artificial Intelligence, 29 August-2 September 2016, The Hague, The Netherlands, 2016

2015

DeFacto - Temporal and multilingual Deep Fact Validation.

Daniel Gerber, Diego Esteves, Jens Lehmann, Lorenz Bühmann, Ricardo Usbeck, Axel-Cyrille Ngonga Ngomo, René Speck

J. Web Semant., 2015

DBpedia - A large-scale, multilingual knowledge base extracted from Wikipedia.

Jens Lehmann, Robert Isele, Max Jakob, Anja Jentzsch, Dimitris Kontokostas, Pablo N. Mendes, Sebastian Hellmann, Mohamed Morsey, Patrick van Kleef, Sören Auer, Christian Bizer

Semantic Web, 2015

2nd special issue on Linked Dataset Descriptions.

Jens Lehmann, Óscar Corcho

Semantic Web, 2015

Simplified RDB2RDF Mapping.

Claus Stadler, Jörg Unbehauen, Patrick Westphal, Mohamed Ahmed Sherif, Jens Lehmann

Proceedings of the Workshop on Linked Data on the Web, 2015

Interlinking: Performance Assessment of User Evaluation vs. Supervised Learning Approaches.

Mofeed Mohamed Hassan, Jens Lehmann, Axel-Cyrille Ngonga Ngomo

Proceedings of the Workshop on Linked Data on the Web, 2015

DBpedia Commons: Structured Multimedia Metadata from the Wikimedia Commons.

Gaurav Vaidya, Dimitris Kontokostas, Magnus Knuth, Jens Lehmann, Sebastian Hellmann

Proceedings of the Semantic Web - ISWC 2015, 2015

An Open Question Answering Framework.

Edgard Marx, Tommaso Soru, Diego Esteves, Axel-Cyrille Ngonga Ngomo, Jens Lehmann

Proceedings of the ISWC 2015 Posters & Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), 2015

The DBpedia Events Dataset.

Magnus Knuth, Jens Lehmann, Dimitris Kontokostas, Thomas Steiner, Harald Sack

Proceedings of the ISWC 2015 Posters & Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), 2015

Interoperable Machine Learning Metadata using MEX.

Diego Esteves, Diego Moussallem, Ciro Baron Neto, Jens Lehmann, Maria Cláudia Cavalcanti, Julio Cesar Duarte

Proceedings of the ISWC 2015 Posters & Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), 2015

Test-driven Assessment of [R2]RML Mappings to Improve Dataset Quality.

Anastasia Dimou, Dimitris Kontokostas, Markus Freudenberg, Ruben Verborgh, Jens Lehmann, Erik Mannens, Sebastian Hellmann, Rik Van de Walle

Proceedings of the ISWC 2015 Posters & Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), 2015

Assessing and Refining Mappings to RDF to Improve Dataset Quality.

Anastasia Dimou, Dimitris Kontokostas, Markus Freudenberg, Ruben Verborgh, Jens Lehmann, Erik Mannens, Sebastian Hellmann, Rik Van de Walle

Proceedings of the Semantic Web - ISWC 2015, 2015

RDF Editing on the Web.

Claus Stadler, Natanael Arndt, Michael Martin, Jens Lehmann

Proceedings of the Joint Proceedings of the Posters and Demos Track of 11th International Conference on Semantic Systems - SEMANTiCS 2015 and 1st Workshop on Data Science: Methods, Technology and Applications (DSci15) 11th International Conference on Semantic Systems, 2015

Unsupervised learning of an extensive and usable taxonomy for DBpedia.

Marco Fossati, Dimitris Kontokostas, Jens Lehmann

Proceedings of the 11th International Conference on Semantic Systems, 2015

MEX vocabulary: a lightweight interchange format for machine learning experiments.

Diego Esteves, Diego Moussallem, Ciro Baron Neto, Tommaso Soru, Ricardo Usbeck, Markus Ackermann, Jens Lehmann

Proceedings of the 11th International Conference on Semantic Systems, 2015

kOre: Using Linked Data for OpenScience Information Integration.

Ivan Ermilov, Konrad Hoeffner, Jens Lehmann, Dmitry Mouromtsev

Proceedings of the Joint Proceedings of the Posters and Demos Track of 11th International Conference on Semantic Systems - SEMANTiCS 2015 and 1st Workshop on Data Science: Methods, Technology and Applications (DSci15) 11th International Conference on Semantic Systems, 2015

The GeoKnow Generator Workbench - An Integrated Tool Supporting the Linked Data Lifecycle for Enterprise Usage.

Andreas Both, Matthias Wauer, Alejandra García-Rojas, Daniel Hladky, Jens Lehmann

Proceedings of the Joint Proceedings of the Posters and Demos Track of 11th International Conference on Semantic Systems - SEMANTiCS 2015 and 1st Workshop on Data Science: Methods, Technology and Applications (DSci15) 11th International Conference on Semantic Systems, 2015

Automating RDF Dataset Transformation and Enrichment.

Mohamed Ahmed Sherif, Axel-Cyrille Ngonga Ngomo, Jens Lehmann

Proceedings of the Semantic Web. Latest Advances and New Domains, 2015

Managing Geospatial Linked Data in the GeoKnow Project.

Jens Lehmann, Spiros Athanasiou, Andreas Both, Alejandra García-Rojas, Giorgos Giannopoulos, Daniel Hladky, Jon Jay Le Grange, Axel-Cyrille Ngonga Ngomo, Mohamed Ahmed Sherif, Claus Stadler, Matthias Wauer, Patrick Westphal, Vadim Zaslawski

Proceedings of the Semantic Web in Earth and Space Science. Current Status and Future Directions, 2015

2014

Perspectives on Ontology Learning

Jens Lehmann, Johanna Völker

Studies on the Semantic Web 18, IOS Press, ISBN: 978-1-61499-379-7, 2014

Knowledge Base Creation, Enrichment and Repair.

Sebastian Hellmann, Volha Bryl, Lorenz Bühmann, Milan Dojchinovski, Dimitris Kontokostas, Jens Lehmann, Uros Milosevic, Petar Petrovski, Vojtech Svátek, Mladen Stanojevic, Ondrej Zamazal

Proceedings of the Linked Open Data - Creating Knowledge Out of Interlinked Data, 2014

Logics for the Semantic Web.

Pascal Hitzler, Jens Lehmann, Axel Polleres

Proceedings of the Computational Logic, 2014

Increasing the financial transparency of European Commission project funding.

Michael Martin, Claus Stadler, Philipp Frischmuth, Jens Lehmann

Semantic Web, 2014

Supporting the Data Lifecycle at a Global Publisher using the Linked Data Stack.

Christian Dirschl, Katja Eck, Jens Lehmann

ERCIM News, 2014

GeoKnow: Making the Web an Exploratory Place for Geospatial Knowledge.

Spiros Athanasiou, Daniel Hladky, Giorgos Giannopoulos, Alejandra García-Rojas, Jens Lehmann

ERCIM News, 2014

DBpedia Viewer - An Integrative Interface for DBpedia leveraging the DBpedia Service Eco System.

Denis Lukovnikov, Dimitris Kontokostas, Claus Stadler, Sebastian Hellmann, Jens Lehmann

Proceedings of the Workshop on Linked Data on the Web co-located with the 23rd International World Wide Web Conference (WWW 2014), 2014

Test-driven evaluation of linked data quality.

Dimitris Kontokostas, Patrick Westphal, Sören Auer, Sebastian Hellmann, Jens Lehmann, Roland Cornelissen, Amrapali Zaveri

Proceedings of the 23rd International World Wide Web Conference, 2014

Databugger: a test-driven framework for debugging the web of data.

Dimitris Kontokostas, Patrick Westphal, Sören Auer, Sebastian Hellmann, Jens Lehmann, Roland Cornelissen

Proceedings of the 23rd International World Wide Web Conference, 2014

Ontology Based Data Access and Integration for Improving the Effectiveness of Farming in Nepal.

Suresh Pokharel, Mohamed Ahmed Sherif, Jens Lehmann

Proceedings of the 2014 IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT), Warsaw, Poland, August 11-14, 2014, 2014

Jassa - A JavaScript suite for SPARQL-based faceted search.

Claus Stadler, Patrick Westphal, Jens Lehmann

Proceedings of the ISWC Developers Workshop 2014, 2014

NIF4OGGD - NLP Interchange Format for Open German Governmental Data.

Mohamed Ahmed Sherif, Sandro Athaíde Coelho, Ricardo Usbeck, Sebastian Hellmann, Jens Lehmann, Martin Brümmer, Andreas Both

Proceedings of the Ninth International Conference on Language Resources and Evaluation, 2014

A Fuzzy Knowledge Representation Model for Student Performance Assessment.

Farshad Badie, Tommaso Soru, Jens Lehmann

Proceedings of the IEEE 14th International Conference on Advanced Learning Technologies, 2014

Towards an open question answering architecture.

Edgard Marx, Ricardo Usbeck, Axel-Cyrille Ngonga Ngomo, Konrad Höffner, Jens Lehmann, Sören Auer

Proceedings of the 10th International Conference on Semantic Systems, 2014

LD viewer - linked data presentation framework.

Denis Lukovnikov, Claus Stadler, Jens Lehmann

Proceedings of the 10th International Conference on Semantic Systems, 2014

Towards question answering on statistical linked data.

Konrad Höffner, Jens Lehmann

Proceedings of the 10th International Conference on Semantic Systems, 2014

Hybrid Acquisition of Temporal Scopes for RDF Data.

Anisa Rula, Matteo Palmonari, Axel-Cyrille Ngonga Ngomo, Daniel Gerber, Jens Lehmann, Lorenz Bühmann

Proceedings of the Semantic Web: Trends and Challenges - 11th International Conference, 2014

NLP Data Cleansing Based on Linguistic Ontology Constraints.

Dimitris Kontokostas, Martin Brümmer, Sebastian Hellmann, Jens Lehmann, Lazaros Ioannidis

Proceedings of the Semantic Web: Trends and Challenges - 11th International Conference, 2014

Lessons Learned - The Case of CROCUS: Cluster-Based Ontology Data Cleansing.

Didier Cherix, Ricardo Usbeck, Andreas Both, Jens Lehmann

Proceedings of the Semantic Web: ESWC 2014 Satellite Events, 2014

CROCUS: Cluster-based Ontology Data Cleansing.

Didier Cherix, Ricardo Usbeck, Andreas Both, Jens Lehmann

Proceedings of the Joint Proceedings of the Second International Workshop on Semantic Web Enterprise Adoption and Best Practice and Second International Workshop on Finance and Economics on the Semantic Web Co-located with 11th European Semantic Web Conference, 2014

Inductive Lexical Learning of Class Expressions.

Lorenz Bühmann, Daniel Fleischhacker, Jens Lehmann, André Melo, Johanna Völker

Proceedings of the Knowledge Engineering and Knowledge Management, 2014

2013

Publishing and interlinking the Global Health Observatory dataset - Towards increasing transparency in Global Health.

Amrapali Zaveri, Jens Lehmann, Sören Auer, Mofeed Mohamed Hassan, Mohamed Ahmed Sherif, Michael Martin

Semantic Web, 2013

Extraktion, Mapping und Verlinkung von Daten im Web - Phasen im Lebenszyklus von Linked Data.

Sören Auer, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Claus Stadler, Jörg Unbehauen

Datenbank-Spektrum, 2013

SPARQL2NL: verbalizing sparql queries.

Axel-Cyrille Ngonga Ngomo, Lorenz Bühmann, Christina Unger, Jens Lehmann, Daniel Gerber

Proceedings of the 22nd International World Wide Web Conference, 2013

Sorry, i don't speak SPARQL: translating SPARQL queries into natural language.

Axel-Cyrille Ngonga Ngomo, Lorenz Bühmann, Christina Unger, Jens Lehmann, Daniel Gerber

Proceedings of the 22nd International World Wide Web Conference, 2013

Integrating NLP Using Linked Data.

Sebastian Hellmann, Jens Lehmann, Sören Auer, Martin Brümmer

Proceedings of the Semantic Web - ISWC 2013, 2013

Pattern Based Knowledge Base Enrichment.

Lorenz Bühmann, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2013, 2013

Crowdsourcing Linked Data Quality Assessment.

Maribel Acosta, Amrapali Zaveri, Elena Simperl, Dimitris Kontokostas, Sören Auer, Jens Lehmann

Proceedings of the Semantic Web - ISWC 2013, 2013

Keyword Query Expansion on Linked Data Using Linguistic and Semantic Features.

Saeedeh Shekarpour, Konrad Höffner, Jens Lehmann, Sören Auer

Proceedings of the 2013 IEEE Seventh International Conference on Semantic Computing, 2013

Towards Transfer Learning of Link Specifications.

Axel-Cyrille Ngonga Ngomo, Jens Lehmann, Mofeed Mohamed Hassan

Proceedings of the 2013 IEEE Seventh International Conference on Semantic Computing, 2013

Can We Create Better Links by Playing Games?

Jens Lehmann, Tri Quan Nguyen, Timofey Ermilov

Proceedings of the 2013 IEEE Seventh International Conference on Semantic Computing, 2013

Introduction to Linked Data and Its Lifecycle on the Web.

Sören Auer, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Amrapali Zaveri

Proceedings of the Reasoning Web. Semantic Technologies for Intelligent Data Access - 9th International Summer School 2013, Mannheim, Germany, July 30, 2013

TripleCheckMate: A Tool for Crowdsourcing the Quality Assessment of Linked Data.

Dimitris Kontokostas, Amrapali Zaveri, Sören Auer, Jens Lehmann

Proceedings of the Knowledge Engineering and the Semantic Web, 2013

User Interface for a Template Based Question Answering System.

Konrad Höffner, Christina Unger, Lorenz Bühmann, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Daniel Gerber, Philipp Cimiano

Proceedings of the Knowledge Engineering and the Semantic Web, 2013

Linked Open Data Statistics: Collection and Exploitation.

Ivan Ermilov, Michael Martin, Jens Lehmann, Sören Auer

Proceedings of the Knowledge Engineering and the Semantic Web, 2013

User-driven quality evaluation of DBpedia.

Amrapali Zaveri, Dimitris Kontokostas, Mohamed Ahmed Sherif, Lorenz Bühmann, Mohamed Morsey, Sören Auer, Jens Lehmann

Proceedings of the I-SEMANTICS 2013 - 9th International Conference on Semantic Systems, 2013

Towards Biomedical Data Integration for Analyzing the Evolution of Cognition.

Amrapali Zaveri, Katja Nowick, Jens Lehmann

Proceedings of the 43. Jahrestagung der Gesellschaft für Informatik, 2013

SAIM - One Step Closer to Zero-Configuration Link Discovery.

Klaus Lyko, Konrad Höffner, René Speck, Axel-Cyrille Ngonga Ngomo, Jens Lehmann

Proceedings of the Semantic Web: ESWC 2013 Satellite Events, 2013

2012

LinkedGeoData: A core for a web of spatial open data.

Claus Stadler, Jens Lehmann, Konrad Höffner, Sören Auer

Semantic Web, 2012

DBpedia and the live extraction of structured data from Wikipedia.

Mohamed Morsey, Jens Lehmann, Sören Auer, Claus Stadler, Sebastian Hellmann

Program, 2012

Template-based question answering over RDF data.

Christina Unger, Lorenz Bühmann, Jens Lehmann, Axel-Cyrille Ngonga Ngomo, Daniel Gerber, Philipp Cimiano

Proceedings of the 21st World Wide Web Conference 2012, 2012

DeFacto - Deep Fact Validation.

Jens Lehmann, Daniel Gerber, Mohamed Morsey, Axel-Cyrille Ngonga Ngomo

Proceedings of the Semantic Web - ISWC 2012, 2012

deqa: Deep Web Extraction for Question Answering.

Jens Lehmann, Tim Furche, Giovanni Grasso, Axel-Cyrille Ngonga Ngomo, Christian Schallhart, Andrew Jon Sellers, Christina Unger, Lorenz Bühmann, Daniel Gerber, Konrad Höffner, David Liu, Sören Auer

Proceedings of the Semantic Web - ISWC 2012, 2012

Managing the Life-Cycle of Linked Data with the LOD2 Stack.

Sören Auer, Lorenz Bühmann, Christian Dirschl, Orri Erling, Michael Hausenblas, Robert Isele, Jens Lehmann, Michael Martin, Pablo N. Mendes, Bert Van Nuffelen, Claus Stadler, Sebastian Tramp, Hugh Williams

Proceedings of the Semantic Web - ISWC 2012, 2012

Assessing Linked Data Mappings Using Network Measures.

Christophe Guéret, Paul Groth, Claus Stadler, Jens Lehmann

Proceedings of the Semantic Web: Research and Applications, 2012

NIF Combinator: Combining NLP Tool Output.

Sebastian Hellmann, Jens Lehmann, Sören Auer, Marcus Nitzschke

Proceedings of the Knowledge Engineering and Knowledge Management, 2012

Linked-Data Aware URI Schemes for Referencing Text Fragments.

Sebastian Hellmann, Jens Lehmann, Sören Auer

Proceedings of the Knowledge Engineering and Knowledge Management, 2012

Universal OWL Axiom Enrichment for Large Knowledge Bases.

Lorenz Bühmann, Jens Lehmann

Proceedings of the Knowledge Engineering and Knowledge Management, 2012

LODStats - An Extensible Framework for High-Performance Dataset Analytics.

Sören Auer, Jan Demter, Michael Martin, Jens Lehmann

Proceedings of the Knowledge Engineering and Knowledge Management, 2012

Navigation-Induced Knowledge Engineering by Example.

Sebastian Hellmann, Jens Lehmann, Jörg Unbehauen, Claus Stadler, Thanh Nghia Lam, Markus Strohmaier

Proceedings of the Semantic Technology, Second Joint International Conference, 2012

Improving the Performance of the DL-Learner SPARQL Component for Semantic Web Applications.

Didier Cherix, Sebastian Hellmann, Jens Lehmann

Proceedings of the Semantic Technology, Second Joint International Conference, 2012

EAGER: Extending Automatically Gazetteers for Entity Recognition.

Ömer Farukhan Günes, Tim Furche, Christian Schallhart, Jens Lehmann, Axel-Cyrille Ngonga Ngomo

Proceedings of the 3rd Workshop on the People's Web Meets NLP: Collaboratively Constructed Semantic Resources and their Applications to NLP@ACL 2012, 2012

Usage-Centric Benchmarking of RDF Triple Stores.

Mohamed Morsey, Jens Lehmann, Sören Auer, Axel-Cyrille Ngonga Ngomo

Proceedings of the Twenty-Sixth AAAI Conference on Artificial Intelligence, 2012

The German DBpedia: A Sense Repository for Linking Entities.

Sebastian Hellmann, Claus Stadler, Jens Lehmann

Proceedings of the Linked Data in Linguistics, 2012

2011

Class expression learning for ontology engineering.

Jens Lehmann, Sören Auer, Lorenz Bühmann, Sebastian Tramp

J. Web Semant., 2011

ReDD-Observatory: Using the Web of Data for Evaluating the Research-Disease Disparity.

Amrapali Zaveri, Ricardo Pietrobon, Sören Auer, Jens Lehmann, Michael Martin, Timofey Ermilov

Proceedings of the 2011 IEEE/WIC/ACM International Conference on Web Intelligence, 2011

RAVEN - active learning of link specifications.

Axel-Cyrille Ngonga Ngomo, Jens Lehmann, Sören Auer, Konrad Höffner

Proceedings of the 6th International Workshop on Ontology Matching, 2011

DBpedia SPARQL Benchmark - Performance Assessment with Real Queries on Real Data.

Mohamed Morsey, Jens Lehmann, Sören Auer, Axel-Cyrille Ngonga Ngomo

Proceedings of the Semantic Web - ISWC 2011, 2011

Introduction to Linked Data and Its Lifecycle on the Web.

Sören Auer, Jens Lehmann, Axel-Cyrille Ngonga Ngomo

Proceedings of the Reasoning Web. Semantic Technologies for the Web of Data, 2011

Towards integrating fuzzy logic capabilities into an ontology-based Inductive Logic Programming framework.

Josué Iglesias, Jens Lehmann

Proceedings of the 11th International Conference on Intelligent Systems Design and Applications, 2011

AutoSPARQL: Let Users Query Your Knowledge Base.

Jens Lehmann, Lorenz Bühmann

Proceedings of the Semantic Web: Research and Applications, 2011

Learning of OWL Class Expressions on Very Large Knowledge Bases and its Applications.

Sebastian Hellmann, Jens Lehmann, Sören Auer

Proceedings of the Semantic Services, Interoperability and Web Applications, 2011

2010

Learning OWL Class Expressions

Jens Lehmann

Studies on the Semantic Web 6, IOS Press, ISBN: 978-3-89838-635-7, 2010

Creating knowledge out of interlinked data.

Sören Auer, Jens Lehmann

Semantic Web, 2010

Concept learning in description logics using refinement operators.

Jens Lehmann, Pascal Hitzler

Mach. Learn., 2010

Extracting reduced logic programs from artificial neural networks.

Jens Lehmann, Sebastian Bader, Pascal Hitzler

Appl. Intell., 2010

ORE - A Tool for Repairing and Enriching Knowledge Bases.

Jens Lehmann, Lorenz Bühmann

Proceedings of the Semantic Web - ISWC 2010 - 9th International Semantic Web Conference, 2010

HANNE - A Holistic Application for Navigational Knowledge Engineering.

Sebastian Hellmann, Jörg Unbehauen, Jens Lehmann

Proceedings of the ISWC 2010 Posters & Demonstrations Track: Collected Abstracts, 2010

I18n of Semantic Web Applications.

Sören Auer, Matthias Weidl, Jens Lehmann, Amrapali Zaveri, Key-Sun Choi

Proceedings of the Semantic Web - ISWC 2010 - 9th International Semantic Web Conference, 2010

Update Strategies for DBpedia Live.

Claus Stadler, Michael Martin, Jens Lehmann, Sebastian Hellmann

Proceedings of the Sixth Workshop on Scripting and Development for the Semantic Web, 2010

2009

Semantische Mashups auf Basis Vernetzter Daten.

Sören Auer, Jens Lehmann, Christian Bizer

Proceedings of the Social Semantic Web: Web 2.0 - Was nun?, 2009

DBpedia - A crystallization point for the Web of Data.

Christian Bizer, Jens Lehmann, Georgi Kobilarov, Sören Auer, Christian Becker, Richard Cyganiak, Sebastian Hellmann

J. Web Semant., 2009

DL-Learner: Learning Concepts in Description Logics.

Jens Lehmann

J. Mach. Learn. Res., 2009

Learning of OWL Class Descriptions on Very Large Knowledge Bases.

Sebastian Hellmann, Jens Lehmann, Sören Auer

Int. J. Semantic Web Inf. Syst., 2009

Triplify: light-weight linked data publication from relational databases.

Sören Auer, Sebastian Dietzold, Jens Lehmann, Sebastian Hellmann, David Aumueller

Proceedings of the 18th International Conference on World Wide Web, 2009

LinkedGeoData: Adding a Spatial Dimension to the Web of Data.

Sören Auer, Jens Lehmann, Sebastian Hellmann

Proceedings of the Semantic Web - ISWC 2009, 8th International Semantic Web Conference, 2009

RelFinder: Revealing Relationships in RDF Knowledge Bases.

Philipp Heim, Sebastian Hellmann, Jens Lehmann, Steffen Lohmann, Timo Stegemann

Proceedings of the Semantic Multimedia, 2009

DBpedia Live Extraction.

Sebastian Hellmann, Claus Stadler, Jens Lehmann, Sören Auer

Proceedings of the On the Move to Meaningful Internet Systems: OTM 2009, 2009

Ideal Downward Refinement in the <i>EL</i> Description Logic.

Jens Lehmann, Christoph Haase

Proceedings of the Inductive Logic Programming, 19th International Conference, 2009

2007

OntoWiki: A Tool for Social, Semantic Collaboration.

Sören Auer, Sebastian Dietzold, Jens Lehmann, Thomas Riechert

Proceedings of the Workshop on Social and Collaborative Construction of Structured Knowledge (CKC 2007) at the 16th International World Wide Web Conference (WWW2007) Banff, 2007

DBpedia: A Nucleus for a Web of Open Data.

Sören Auer, Christian Bizer, Georgi Kobilarov, Jens Lehmann, Richard Cyganiak, Zachary G. Ives

Proceedings of the Semantic Web, 2007

Hybrid Learning of Ontology Classes.

Jens Lehmann

Proceedings of the Machine Learning and Data Mining in Pattern Recognition, 2007

Foundations of Refinement Operators for Description Logics.

Jens Lehmann, Pascal Hitzler

Proceedings of the Inductive Logic Programming, 17th International Conference, 2007

A Refinement Operator Based Learning Algorithm for the <i>ALC</i> Description Logic.

Jens Lehmann, Pascal Hitzler

Proceedings of the Inductive Logic Programming, 17th International Conference, 2007

What Have Innsbruck and Leipzig in Common? Extracting Semantics from Wiki Content.

Sören Auer, Jens Lehmann

Proceedings of the Semantic Web: Research and Applications, 2007

SWORE - SoftWiki Ontology for Requirements Engineering.

Thomas Riechert, Kim Lauenroth, Jens Lehmann

Proceedings of the Social Semantic Web 2007, 2007

Discovering Unknown Connections - the DBpedia Relationship Finder.

Jens Lehmann, Jörg Schüppel, Sören Auer

Proceedings of the Social Semantic Web 2007, 2007