Lei Zou

Orcid: 0000-0002-8586-4400

Affiliations:
  • Peking University, Institute of Computer Science and Technology (ICST), Beijing, China
  • Huazhong University of Science and Technology (HUST), Wuhan, China (PhD 2009)


According to our database1, Lei Zou authored at least 175 papers between 2006 and 2024.

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Bibliography

2024
Minimum motif-cut: a workload-aware RDF graph partitioning strategy.
VLDB J., September, 2024

Vertex Encoding for Edge Nonexistence Determination With SIMD Acceleration.
IEEE Trans. Knowl. Data Eng., July, 2024

GraphMM: Graph-Based Vehicular Map Matching by Leveraging Trajectory and Road Correlations.
IEEE Trans. Knowl. Data Eng., January, 2024

LM-SRPQ: Efficiently Answering Regular Path Query in Streaming Graphs.
Proc. VLDB Endow., January, 2024

Materialized View Selection & View-Based Query Planning for Regular Path Queries.
Proc. ACM Manag. Data, 2024

MMPKUBase: A Comprehensive and High-quality Chinese Multi-modal Knowledge Graph.
CoRR, 2024

Combining Optimal Transport and Embedding-Based Approaches for More Expressiveness in Unsupervised Graph Alignment.
CoRR, 2024

Leveraging Large Language Model as Simulated Patients for Clinical Education.
CoRR, 2024

Variable-Length Path Query Evaluation Based on Worst-Case Optimal Joins.
Proceedings of the 40th IEEE International Conference on Data Engineering, 2024

Efficient Pruned Top-K Subgraph Matching with Topology-Aware Bounds.
Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, 2024

A Progressive Question Answering Framework Adaptable to Multiple Knowledge Sources.
Proceedings of the Web and Big Data - 8th International Joint Conference, 2024

2023
Efficient and Accurate SimRank-based Similarity Joins: Experiments, Analysis, and Improvement.
Proc. VLDB Endow., December, 2023

An Efficient Data Structure for Dynamic Graph on GPUs.
IEEE Trans. Knowl. Data Eng., November, 2023

SGSI - A Scalable GPU-Friendly Subgraph Isomorphism Algorithm.
IEEE Trans. Knowl. Data Eng., November, 2023

Sliding window-based approximate triangle counting with bounded memory usage.
VLDB J., September, 2023

Top-k heavy weight triangles listing on graph stream.
World Wide Web (WWW), July, 2023

Graph Stream Sketch: Summarizing Graph Streams With High Speed and Accuracy.
IEEE Trans. Knowl. Data Eng., June, 2023

Knowledge Graph Quality Management: A Comprehensive Survey.
IEEE Trans. Knowl. Data Eng., May, 2023

A Cost-Driven Top-K Queries Optimization Approach on Federated RDF Systems.
IEEE Trans. Big Data, April, 2023

Guest Editorial: WWWJ Special Issue of the 22th International Conference on Web Information Systems Engineering (WISE 2021).
World Wide Web (WWW), March, 2023

Two is Better Than One: Answering Complex Questions by Multiple Knowledge Sources with Generalized Links.
CoRR, 2023

ADMUS: A Progressive Question Answering Framework Adaptable to Multiple Knowledge Sources.
CoRR, 2023

Efficient Execution of SPARQL Queries with OPTIONAL and UNION Expressions.
CoRR, 2023

Exploiting Ubiquitous Mentions for Document-Level Relation Extraction.
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2023

FASI: FPGA-friendly Subgraph Isomorphism on Massive Graphs.
Proceedings of the 39th IEEE International Conference on Data Engineering, 2023

IFCA: Index-Free Community-Aware Reachability Processing Over Large Dynamic Graphs.
Proceedings of the 39th IEEE International Conference on Data Engineering, 2023

GAMMA: A Graph Pattern Mining Framework for Large Graphs on GPU.
Proceedings of the 39th IEEE International Conference on Data Engineering, 2023

LLMaAA: Making Large Language Models as Active Annotators.
Proceedings of the Findings of the Association for Computational Linguistics: EMNLP 2023, 2023

PEG: A Partial Evaluation-based Distributed RDF Graph System.
Proceedings of the Database Systems for Advanced Applications, 2023

gFOV: A Full-Stack SPARQL Query Optimizer & Plan Visualizer.
Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, 2023

CORD: A Three-Stage Coarse-to-Fine Framework for Relation Detection in Knowledge Base Question Answering.
Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, 2023

A Novel Table-to-Graph Generation Approach for Document-Level Joint Entity and Relation Extraction.
Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 2023

AtTGen: Attribute Tree Generation for Real-World Attribute Joint Extraction.
Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 2023

2022
Knowledge based natural answer generation via masked-graph transformer.
World Wide Web, 2022

Building Graphs at Scale via Sequence of Edges: Model and Generation Algorithms.
IEEE Trans. Knowl. Data Eng., 2022

Space-Efficient Subgraph Search Over Streaming Graph With Timing Order Constraint.
IEEE Trans. Knowl. Data Eng., 2022

gBuilder: A Scalable Knowledge Graph Construction System for Unstructured Corpus.
CoRR, 2022

Introducing Semantic Information for Numerical Attribute Prediction over Knowledge Graphs.
Proceedings of the Semantic Web - ISWC 2022, 2022

VGStore: A Multimodal Extension to SPARQL for Querying RDF Scene Graph.
Proceedings of the ISWC 2022 Posters, 2022

Crake: Causal-Enhanced Table-Filler for Question Answering over Large Scale Knowledge Base.
Proceedings of the Findings of the Association for Computational Linguistics: NAACL 2022, 2022

Evaluating Knowledge Graph Accuracy Powered by Optimized Human-machine Collaboration.
Proceedings of the KDD '22: The 28th ACM SIGKDD Conference on Knowledge Discovery and Data Mining, Washington, DC, USA, August 14, 2022

MPC: Minimum Property-Cut RDF Graph Partitioning.
Proceedings of the 38th IEEE International Conference on Data Engineering, 2022

Building Graphs at Scale via Sequence of Edges: Model and Generation Algorithms (Extended Abstract).
Proceedings of the 38th IEEE International Conference on Data Engineering, 2022

gCBO: A Cost-based Optimizer for Graph Databases.
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, 2022

A GPU-based Graph Pattern Mining System.
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, 2022

gTop: An Efficient SPARQL Query Engine.
Proceedings of the Web and Big Data - 6th International Joint Conference, 2022

ForGen: Autoregressive Generation of Sparse Graphs with Preferential Forest.
Proceedings of the Web and Big Data - 6th International Joint Conference, 2022

2021
Optimizing Multi-Query Evaluation in Federated RDF Systems.
IEEE Trans. Knowl. Data Eng., 2021

MSQ-Index: A Succinct Index for Fast Graph Similarity Search.
IEEE Trans. Knowl. Data Eng., 2021

LPMA - An Efficient Data Structure for Dynamic Graph on GPUs.
Proceedings of the Web Information Systems Engineering - WISE 2021, 2021

Accelerating Triangle Counting on GPU.
Proceedings of the SIGMOD '21: International Conference on Management of Data, 2021

Sliding Window-based Approximate Triangle Counting over Streaming Graphs with Duplicate Edges.
Proceedings of the SIGMOD '21: International Conference on Management of Data, 2021

NAMER: A Node-Based Multitasking Framework for Multi-Hop Knowledge Base Question Answering.
Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies: Demonstrations, 2021

Noah: Neural-optimized A* Search Algorithm for Graph Edit Distance Computation.
Proceedings of the 37th IEEE International Conference on Data Engineering, 2021

Hop-Constrained Subgraph Query and Summarization on Large Graphs.
Proceedings of the Database Systems for Advanced Applications. DASFAA 2021 International Workshops, 2021

NREngine: A Graph-Based Query Engine for Network Reachability.
Proceedings of the Database Systems for Advanced Applications. DASFAA 2021 International Workshops, 2021

FedTopK: Top-K Queries Optimization over Federated RDF Systems.
Proceedings of the Database Systems for Advanced Applications, 2021

gStore-C: A Transactional RDF Store with Light-Weight Optimistic Lock.
Proceedings of the Web and Big Data - 5th International Joint Conference, 2021

Deep-gAnswer: A Knowledge Based Question Answering System.
Proceedings of the Web and Big Data - 5th International Joint Conference, 2021

2020
Dolha - an efficient and exact data structure for streaming graphs.
World Wide Web, 2020

Leaper: A Learned Prefetcher for Cache Invalidation in LSM-tree based Storage Engines.
Proc. VLDB Endow., 2020

SimTab: Accuracy-Guaranteed SimRank Queries through Tighter Confidence Bounds and Multi-Armed Bandits.
Proc. VLDB Endow., 2020

Deep Analysis on Subgraph Isomorphism.
CoRR, 2020

Overview of the CCKS 2019 Knowledge Graph Evaluation Track: Entity, Relation, Event and QA.
CoRR, 2020

VISION-KG: Topic-centric Visualization System for Summarizing Knowledge Graph.
Proceedings of the WSDM '20: The Thirteenth ACM International Conference on Web Search and Data Mining, 2020

DynGCN: A Dynamic Graph Convolutional Network Based on Spatial-Temporal Modeling.
Proceedings of the Web Information Systems Engineering - WISE 2020, 2020

Parallel Mining of Frequent Subtree Patterns.
Proceedings of the Software Foundations for Data Interoperability and Large Scale Graph Data Analytics, 2020

GSI: GPU-friendly Subgraph Isomorphism.
Proceedings of the 36th IEEE International Conference on Data Engineering, 2020

A New CPU-FPGA Heterogeneous gStore System.
Proceedings of the Web and Big Data - 4th International Joint Conference, 2020

Natural Answer Generation via Graph Transformer.
Proceedings of the Web and Big Data - 4th International Joint Conference, 2020

The Value of Paraphrase for Knowledge Base Predicates.
Proceedings of the Thirty-Fourth AAAI Conference on Artificial Intelligence, 2020

2019
Adaptive Distributed RDF Graph Fragmentation and Allocation based on Query Workload.
IEEE Trans. Knowl. Data Eng., 2019

Interactive natural language question answering over knowledge graphs.
Inf. Sci., 2019

NRGQP: A Graph-Based Query Platform for Network Reachability.
Proceedings of the Web Information Systems Engineering, 2019

Gated Relational Graph Neural Network for Semi-supervised Learning on Knowledge Graphs.
Proceedings of the Web Information Systems Engineering - WISE 2019, 2019

How Question Generation Can Help Question Answering over Knowledge Base.
Proceedings of the Natural Language Processing and Chinese Computing, 2019

An In-depth Analysis of Graph Neural Networks for Semi-supervised Learning.
Proceedings of the Semantic Technology - 9th Joint International Conference, 2019

Time Constrained Continuous Subgraph Search Over Streaming Graphs.
Proceedings of the 35th IEEE International Conference on Data Engineering, 2019

Triangle Counting on GPU Using Fine-Grained Task Distribution.
Proceedings of the 35th IEEE International Conference on Data Engineering Workshops, 2019

Fast and Accurate Graph Stream Summarization.
Proceedings of the 35th IEEE International Conference on Data Engineering, 2019

Accelerating Partial Evaluation in Distributed SPARQL Query Evaluation.
Proceedings of the 35th IEEE International Conference on Data Engineering, 2019

A Scalable Sparse Matrix-Based Join for SPARQL Query Processing.
Proceedings of the Database Systems for Advanced Applications, 2019

An Interactive Mechanism to Improve Question Answering Systems via Feedback.
Proceedings of the 28th ACM International Conference on Information and Knowledge Management, 2019

FMQO: A Federated RDF System Supporting Multi-query Optimization.
Proceedings of the Web and Big Data - Third International Joint Conference, 2019

2018
SPARQL.
Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Longest Increasing Subsequence Computation over Streaming Sequences.
IEEE Trans. Knowl. Data Eng., 2018

Answering Natural Language Questions by Subgraph Matching over Knowledge Graphs.
IEEE Trans. Knowl. Data Eng., 2018

Matching Heterogeneous Event Data.
IEEE Trans. Knowl. Data Eng., 2018

Question Answering Over Knowledge Graphs: Question Understanding Via Template Decomposition.
Proc. VLDB Endow., 2018

Redesign of the gStore system.
Frontiers Comput. Sci., 2018

Using partial evaluation in holistic subgraph search.
Frontiers Comput. Sci., 2018

gSMat: A Scalable Sparse Matrix-based Join for SPARQL Query Processing.
CoRR, 2018

Expressivity issues in SPARQL: monotonicity and two-versus three-valued semantics.
Sci. China Inf. Sci., 2018

MapSQ: A Plugin-based MapReduce Framework for SPARQL Queries on GPU.
Proceedings of the Companion of the The Web Conference 2018 on The Web Conference 2018, 2018

SPARQL Multi-Query Optimization.
Proceedings of the 17th IEEE International Conference On Trust, 2018

IMPROVE-QA: An Interactive Mechanism for RDF Question/Answering Systems.
Proceedings of the 2018 International Conference on Management of Data, 2018

Speeding Up Set Intersections in Graph Algorithms using SIMD Instructions.
Proceedings of the 2018 International Conference on Management of Data, 2018

HeavyGuardian: Separate and Guard Hot Items in Data Streams.
Proceedings of the 24th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining, 2018

Ontology-Based Personalized Telehealth Scheme in Cloud Computing.
Proceedings of the Web Services - ICWS 2018, 2018

Efficient Computation of a Near-Maximum Independent Set over Evolving Graphs.
Proceedings of the 34th IEEE International Conference on Data Engineering, 2018

Joint Event-Partner Recommendation in Event-Based Social Networks.
Proceedings of the 34th IEEE International Conference on Data Engineering, 2018

Answering Natural Language Questions by Subgraph Matching over Knowledge Graphs (Extended Abstract).
Proceedings of the 34th IEEE International Conference on Data Engineering, 2018

ID Bloom Filter: Achieving Faster Multi-Set Membership Query in Network Applications.
Proceedings of the 2018 IEEE International Conference on Communications, 2018

A State-transition Framework to Answer Complex Questions over Knowledge Base.
Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing, Brussels, Belgium, October 31, 2018

Multi-query Optimization in Federated RDF Systems.
Proceedings of the Database Systems for Advanced Applications, 2018

Single Hash: Use One Hash Function to Build Faster Hash Based Data Structures.
Proceedings of the 2018 IEEE International Conference on Big Data and Smart Computing, 2018

2017
Efficient SimRank-Based Similarity Join.
ACM Trans. Database Syst., 2017

Answering top-K query combined keywords and structural queries on RDF graphs.
Inf. Syst., 2017

g st -store: Querying Large Spatiotemporal RDF Graphs.
Data Inf. Manag., 2017

Graph-Based RDF Data Management.
Data Sci. Eng., 2017

Keyphrase Extraction Using Knowledge Graphs.
Data Sci. Eng., 2017

LiverWiki: a wiki-based database for human liver.
BMC Bioinform., 2017

Improving the Precision of RDF Question/Answering Systems: A Why Not Approach.
Proceedings of the 26th International Conference on World Wide Web Companion, 2017

Natural Language Question/Answering: Let Users Talk With The Knowledge Graph.
Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, 2017

Keyword Search on RDF Graphs - A Query Graph Assembly Approach.
Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, 2017

SPARQL Query Parallel Processing: A Survey.
Proceedings of the 2017 IEEE International Congress on Big Data, 2017

Efficiently Answering Technical Questions - A Knowledge Graph Approach.
Proceedings of the Thirty-First AAAI Conference on Artificial Intelligence, 2017

2016
Answering subgraph queries over massive disk resident graphs.
World Wide Web, 2016

Processing SPARQL queries over distributed RDF graphs.
VLDB J., 2016

Online Subgraph Skyline Analysis over Knowledge Graphs.
IEEE Trans. Knowl. Data Eng., 2016

Semantic SPARQL Similarity Search Over RDF Knowledge Graphs.
Proc. VLDB Endow., 2016

Computing Longest Increasing Subsequences over Sequential Data Streams.
Proc. VLDB Endow., 2016

SMe: explicit & implicit constrained-space probabilistic threshold range queries for moving objects.
GeoInformatica, 2016

Computing Longest Increasing Subsequence Over Sequential Data Streams.
CoRR, 2016

Privacy Preserving Subgraph Matching on Large Graphs in Cloud.
Proceedings of the 2016 International Conference on Management of Data, 2016

Query Workload-based RDF Graph Fragmentation and Allocation.
Proceedings of the 19th International Conference on Extending Database Technology, 2016

2015
Efficient Graph Similarity Search Over Large Graph Databases.
IEEE Trans. Knowl. Data Eng., 2015

Subgraph Matching with Set Similarity in a Large Graph Database.
IEEE Trans. Knowl. Data Eng., 2015

Context-Aware Recommendation Using Role-Based Trust Network.
ACM Trans. Knowl. Discov. Data, 2015

Top-k queries on RDF graphs.
Inf. Sci., 2015

How to Build Templates for RDF Question/Answering: An Uncertain Graph Similarity Join Approach.
Proceedings of the 2015 ACM SIGMOD International Conference on Management of Data, Melbourne, Victoria, Australia, May 31, 2015

Taxonomy Induction and Taxonomy-based Recommendations for Online Courses.
Proceedings of the 15th ACM/IEEE-CE Joint Conference on Digital Libraries, 2015

A graph-based RDF triple store.
Proceedings of the 31st IEEE International Conference on Data Engineering, 2015

Detecting urban black holes based on human mobility data.
Proceedings of the 23rd SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2015

On the Marriage of SPARQL and Keywords.
Proceedings of the Web Technologies and Applications - 17th Asia-PacificWeb Conference, 2015

Knowledge Base Completion Using Matrix Factorization.
Proceedings of the Web Technologies and Applications - 17th Asia-PacificWeb Conference, 2015

2014
gStore: a graph-based SPARQL query engine.
VLDB J., 2014

SQBC: An efficient subgraph matching method over large and dense graphs.
Inf. Sci., 2014

Efficient processing of label-constraint reachability queries in large graphs.
Inf. Syst., 2014

Processing SPARQL Queries Over Linked Data-A Distributed Graph-based Approach.
CoRR, 2014

Holistic Subgraph Search over Large Graphs.
Proceedings of the Web-Age Information Management - 15th International Conference, 2014

Natural language question answering over RDF: a graph data driven approach.
Proceedings of the International Conference on Management of Data, 2014

Matching heterogeneous event data.
Proceedings of the International Conference on Management of Data, 2014

Using Conditional Functional Dependency to Discover Abnormal Data in RDF Graphs.
Proceedings of the Sixth Workshop on Semantic Web Information Management, 2014

gst-Store: An Engine for Large RDF Graph Integrating Spatiotemporal Information.
Proceedings of the 17th International Conference on Extending Database Technology, 2014

Efficient Subgraph Skyline Search Over Large Graphs.
Proceedings of the 23rd ACM International Conference on Conference on Information and Knowledge Management, 2014

2013
Efficient SimRank-based Similarity Join Over Large Graphs.
Proc. VLDB Endow., 2013

Natural language question answering over RDF data.
Proceedings of the ACM SIGMOD International Conference on Management of Data, 2013

Mapping Entity-Attribute Web Tables to Web-Scale Knowledge Bases.
Proceedings of the Database Systems for Advanced Applications, 2013

S-store: An Engine for Large RDF Graph Integrating Spatial Information.
Proceedings of the Database Systems for Advanced Applications, 2013

Graph similarity search with edit distance constraint in large graph databases.
Proceedings of the 22nd ACM International Conference on Information and Knowledge Management, 2013

2012
Answering pattern match queries in large graph databases via graph embedding.
VLDB J., 2012

Explore Person Specific Evidence in Web Person Name Disambiguation.
Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning, 2012

Keyword Graph: Answering Keyword Search over Large Graphs.
Proceedings of the Advanced Data Mining and Applications, 8th International Conference, 2012

2011
Pareto-Based Dominant Graph: An Efficient Indexing Structure to Answer Top-K Queries.
IEEE Trans. Knowl. Data Eng., 2011

gStore: Answering SPARQL Queries via Subgraph Matching.
Proc. VLDB Endow., 2011

Top-K Possible Shortest Path Query over a Large Uncertain Graph.
Proceedings of the Web Information System Engineering - WISE 2011, 2011

Answering Subgraph Queries over Large Graphs.
Proceedings of the Web-Age Information Management - 12th International Conference, 2011

Subgraph Search over Massive Disk Resident Graphs.
Proceedings of the Scientific and Statistical Database Management, 2011

Preface.
Proceedings of the Workshops Proceedings of the 27th International Conference on Data Engineering, 2011

Answering label-constraint reachability in large graphs.
Proceedings of the 20th ACM Conference on Information and Knowledge Management, 2011

2010
Extracting 5W1H Event Semantic Elements from Chinese Online News.
Proceedings of the Web-Age Information Management, 11th International Conference, 2010

Dynamic Skyline Queries in Large Graphs.
Proceedings of the Database Systems for Advanced Applications, 2010

2009
K-Automorphism: A General Framework For Privacy Preserving Network Publication.
Proc. VLDB Endow., 2009

DistanceJoin: Pattern Match Query In a Large Graph Database.
Proc. VLDB Endow., 2009

Top-K Correlation Sub-graph Search in Graph Databases.
Proceedings of the Database Systems for Advanced Applications, 2009

Efficient Top-k Monitoring of Abnormality in Sensor Networks.
Proceedings of the Ninth IEEE International Conference on Computer and Information Technology, 2009

2008
Dominant Graph: An Efficient Indexing Structure to Answer Top-K Queries.
Proceedings of the 24th International Conference on Data Engineering, 2008

A novel spectral coding in a large graph database.
Proceedings of the EDBT 2008, 2008

Summarization Graph Indexing: Beyond Frequent Structure-Based Approach.
Proceedings of the Database Systems for Advanced Applications, 2008

2007
Evaluate Structure Similarity in XML Documents with Merge-Edit-Distance.
Proceedings of the Emerging Technologies in Knowledge Discovery and Data Mining, 2007

Progressive Subspace Skyline Clusters Mining on High Dimensional Data.
Proceedings of the Emerging Technologies in Knowledge Discovery and Data Mining, 2007

Top-k subgraph matching query in a large graph.
Proceedings of the First Ph.D. Workshop in CIKM, 2007

2006
PrefixTreeESpan: A Pattern Growth Algorithm for Mining Embedded Subtrees.
Proceedings of the Web Information Systems, 2006

Mining Frequent Induced Subtree Patterns with Subtree-Constraint.
Proceedings of the Workshops Proceedings of the 6th IEEE International Conference on Data Mining (ICDM 2006), 2006


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