Sven Helmer

Orcid: 0000-0002-9666-1932

Affiliations:
  • University of Zurich, Switzerland
  • Free University of Bozen-Bolzano, Italy (former)
  • University of Mannheim, Germany (former)


According to our database1, Sven Helmer authored at least 101 papers between 1997 and 2024.

Collaborative distances:
  • Dijkstra number2 of four.
  • Erdős number3 of four.

Timeline

Legend:

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PhD thesis 
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Links

Online presence:

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Bibliography

2024
Optimism and Pessimism in Database Query Optimisation.
Proceedings of the 18th IEEE International Conference on Semantic Computing, 2024

Quantifying and Estimating the Predictability Upper Bound of Univariate Numeric Time Series.
Proceedings of the 30th ACM SIGKDD Conference on Knowledge Discovery and Data Mining, 2024

2023
Correlation Joins over Time Series Data Streams Utilizing Complementary Dimension Reduction and Transformation.
Proc. ACM Manag. Data, December, 2023

Robust and scalable content-and-structure indexing.
VLDB J., July, 2023

Workload-Aware Contention-Management in Indexes for Hierarchical Data.
Proceedings of the Datenbanksysteme für Business, 2023

2022
Dynamic Spanning Trees for Connectivity Queries on Fully-dynamic Undirected Graphs.
Proc. VLDB Endow., 2022

Robust and Scalable Content-and-Structure Indexing (Extended Version).
CoRR, 2022

Dynamic Spanning Trees for Connectivity Queries on Fully-dynamic Undirected Graphs (Extended version).
CoRR, 2022

2021
Cache-efficient sweeping-based interval joins for extended Allen relation predicates.
VLDB J., 2021

Structural textile pattern recognition and processing based on hypergraphs.
Inf. Retr. J., 2021

DanceMoves: A Visual Analytics Tool for Dance Movement Analysis.
Proceedings of the 21st Eurographics Conference on Visualization, 2021

Inserting Keys into the Robust Content-and-Structure (RCAS) Index.
Proceedings of the Advances in Databases and Information Systems, 2021

2020
A Blockchain-based Decentralized Electronic Marketplace for Computing Resources.
SN Comput. Sci., 2020

What is meaningful research and how should we measure it?
Scientometrics, 2020

Dynamic Interleaving of Content and Structure for Robust Indexing of Semi-Structured Hierarchical Data.
Proc. VLDB Endow., 2020

Improving orienteering-based tourist trip planning with social sensing.
Future Gener. Comput. Syst., 2020

Cache-Efficient Sweeping-Based Interval Joins for Extended Allen Relation Predicates (Extended Version).
CoRR, 2020

Dynamic Interleaving of Content and Structure for Robust Indexing of Semi-Structured Hierarchical Data (Extended Version).
CoRR, 2020

2019
A semantic pattern for trusted orchestration in IoT edge clouds.
Internet Technol. Lett., 2019

Interactive and space-efficient multi-dimensional time series subsequence matching.
Inf. Syst., 2019

Social Sensing for Improving the User Experience in Orienteering.
Proceedings of the 13th IEEE International Conference on Semantic Computing, 2019

Predicting and Preventing Dangerous Events via Video Surveillance Using a Robotic Platform.
Proceedings of the 3rd IEEE International Conference on Robotic Computing, 2019

High-Level Automatic Event Detection and User Classification in a Social Network Context.
Proceedings of the Graphical Models for Security - 6th International Workshop, 2019

A Lightweight Container Middleware for Edge Cloud Architectures.
Proceedings of the Fog and Edge Computing, 2019

2018
May I Have Your Attention, Please: - Building a Dystopian Attention Economy.
Proceedings of the Companion of the The Web Conference 2018 on The Web Conference 2018, 2018

A Framework for High-Level Event Detection in a Social Network Context Via an Extension of ISEQL.
Proceedings of the 12th IEEE International Conference on Semantic Computing, 2018

SARRI: A SmArt Rapiro Robot Integrating a Framework for Automatic High-Level Surveillance Event Detection.
Proceedings of the Second IEEE International Conference on Robotic Computing, 2018

A Decision Framework for Blockchain Platforms for IoT and Edge Computing.
Proceedings of the 3rd International Conference on Internet of Things, 2018

A Performance Exploration of Architectural Options for a Middleware for Decentralised Lightweight Edge Cloud Architectures.
Proceedings of the 3rd International Conference on Internet of Things, 2018

An architecture pattern for trusted orchestration in IoT edge clouds.
Proceedings of the Third International Conference on Fog and Mobile Edge Computing, 2018

EthernityDB - Integrating Database Functionality into a Blockchain.
Proceedings of the New Trends in Databases and Information Systems, 2018

2017
Solving Orienteering with Category Constraints Using Prioritized Search.
CoRR, 2017

Sweeping-Based Temporal Aggregation.
Proceedings of the Advances in Spatial and Temporal Databases, 2017

Hybrid Best-First Greedy Search for Orienteering with Category Constraints.
Proceedings of the Advances in Spatial and Temporal Databases, 2017

Labeling the Frames of a Video Stream with Interval Events.
Proceedings of the 11th IEEE International Conference on Semantic Computing, 2017

Show, Don't Tell: Retrieving Cultural Assets via Gestures.
Proceedings of the Joint Ontology Workshops 2017 Episode 3: The Tyrolean Autumn of Ontology, 2017

A Framework for Comparing Interactive Route Planning Apps in Tourism.
Proceedings of the Second Workshop on Engineering Computer-Human Interaction in Recommender Systems co-located with the 9th ACM SIGCHI Symposium on Engineering Interactive Computing Systems (EICS 2017), 2017

Itinerary Planning with Category Constraints Using a Probabilistic Approach.
Proceedings of the Database and Expert Systems Applications, 2017

An Interactive Framework for Video Surveillance Event Detection and Modeling.
Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, 2017

A Platform for Edge Computing Based on Raspberry Pi Clusters.
Proceedings of the Data Analytics - 31st British International Conference on Databases, 2017

Interactive Time Series Subsequence Matching.
Proceedings of the Advances in Databases and Information Systems, 2017

2016
ISEQL, an Interval-based Surveillance Event Query Language.
Int. J. Multim. Data Eng. Manag., 2016

Bringing the Cloud to Rural and Remote Areas - Cloudlet by Cloudlet.
CoRR, 2016

PIEJoin: Towards Parallel Set Containment Joins.
Proceedings of the 28th International Conference on Scientific and Statistical Database Management, 2016

High-Level Surveillance Event Detection Using an Interval-Based Query Language.
Proceedings of the Tenth IEEE International Conference on Semantic Computing, 2016

An Interval-based Query Language for High-level Surveillance Event Detection.
Proceedings of the 24th Italian Symposium on Advanced Database Systems, 2016

An Event Detection Framework Supported by a Smart Graphical User Interface.
Proceedings of the 17th IEEE International Conference on Information Reuse and Integration, 2016

An interval join optimized for modern hardware.
Proceedings of the 32nd IEEE International Conference on Data Engineering, 2016

A Container-Based Edge Cloud PaaS Architecture Based on Raspberry Pi Clusters.
Proceedings of the 4th IEEE International Conference on Future Internet of Things and Cloud Workshops, 2016

Bringing the Cloud to Rural and Remote Areas via Cloudlets.
Proceedings of the 7th Annual Symposium on Computing for Development, 2016

2015
A survey study on major technical barriers affecting the decision to adopt cloud services.
J. Syst. Softw., 2015

An Ontological Approach to Creating an Andean Weaving Knowledge Base.
ACM Journal on Computing and Cultural Heritage, 2015

Ordering Selection Operators Using the Minmax Regret Rule.
CoRR, 2015

A Similarity Measure for Weaving Patterns in Textiles.
Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2015

Ordering Selection Operators Under Partial Ignorance.
Proceedings of the 24th ACM International Conference on Information and Knowledge Management, 2015

2014
Inferring offline hierarchical ties from online social networks.
Proceedings of the 23rd International World Wide Web Conference, 2014

Using Time-Sensitive Rooted PageRank to Detect Hierarchical Social Relationships.
Proceedings of the Advances in Intelligent Data Analysis XIII, 2014

Efficient itinerary planning with category constraints.
Proceedings of the 22nd ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2014

2013
Affordable and Energy-Efficient Cloud Computing Clusters: The Bolzano Raspberry Pi Cloud Cluster Experiment.
Proceedings of the IEEE 5th International Conference on Cloud Computing Technology and Science, 2013

2012
Measuring structural similarity of semistructured data based on information-theoretic approaches.
VLDB J., 2012

Integrating Star and Snowflake Schemas in Data Warehouses.
Int. J. Data Warehous. Min., 2012

An impact ordering approach for indexing fuzzy sets.
Fuzzy Sets Syst., 2012

2011
A Comparative Case Study of Indonesian and UK Organisational Culture Differences in IS Project Management.
Int. J. Technol. Hum. Interact., 2011

2009
Increasing the Performance of Fuzzy Retrieval Using Impact Ordering.
Proceedings of the Joint 2009 International Fuzzy Systems Association World Congress and 2009 European Society of Fuzzy Logic and Technology Conference, 2009

On the Termination Problem for Declarative XML Message Processing.
Proceedings of the Database and Expert Systems Applications, 20th International Conference, 2009

Towards Building a Knowledge Base for Research on Andean Weaving.
Proceedings of the Dataspace: The Final Frontier, 2009

2008
Fault-Tolerant Compression Algorithms for Delay-Sensitive Sensor Networks with Unreliable Links.
Proceedings of the Distributed Computing in Sensor Systems, 2008

2007
Measuring the Structural Similarity of Semistructured Documents Using Entropy.
Proceedings of the 33rd International Conference on Very Large Data Bases, 2007

An Interval-Based Index Structure for Structure Elucidation in Chemical Databases.
Proceedings of the Foundations of Fuzzy Logic and Soft Computing, 2007

Indexing Set-Valued Attributes with a Multi-level Extendible Hashing Scheme.
Proceedings of the Database and Expert Systems Applications, 18th International Conference, 2007

2006
Strategies for query unnesting in XML databases.
ACM Trans. Database Syst., 2006

Kappa-Join: Efficient Execution of Existential Quantification in XML Query Languages.
Proceedings of the Database and XML Technologies, 2006

Algebraic Optimization of Nested XPath Expressions.
Proceedings of the 22nd International Conference on Data Engineering, 2006

On the Optimal Ordering of Maps, Selections, and Joins Under Factorization.
Proceedings of the Flexible and Efficient Information Handling, 2006

2005
Formally Specifying the Syntax and Semantics of a Visual Query Language for the Domain of High Energy Physics Data Analysis.
Proceedings of the 2005 IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC 2005), 2005

On the Optimal Ordering of Maps and Selections under Factorization.
Proceedings of the 21st International Conference on Data Engineering, 2005

Full-fledged Algebraic XPath Processing in Natix.
Proceedings of the 21st International Conference on Data Engineering, 2005

A Model-Based Monitoring and Diagnosis System for a Space-Based Astrometry Mission.
Proceedings of the Database and Expert Systems Applications, 16th International Conference, 2005

2004
Evaluating lock-based protocols for cooperation on XML documents.
SIGMOD Rec., 2004

XQuery Processing in Natix with an Emphasis on Join Ordering.
Proceedings of the First International Workshop on XQuery Implementation, 2004

Nested Queries and Quantifiers in an Ordered Context.
Proceedings of the 20th International Conference on Data Engineering, 2004

PHEASANT: A PHysicist's EAsy ANalysis Tool.
Proceedings of the Flexible Query Answering Systems, 6th International Conference, 2004

Timestamp-Based Protocols for Synchronizing Access on XML Documents.
Proceedings of the Database and Expert Systems Applications, 15th International Conference, 2004

2003
A performance study of four index structures for set-valued attributes of low cardinality.
VLDB J., 2003

XML-Datenbanksysteme und ihre Anwendung.
it Inf. Technol., 2003

Book Review: "Recent issues on fuzzy databases" by G. Bordogna and G. Pasi (Eds.); Physica Verlag, Wurzburg, 2000, 236pp., ISBN: 3-7908-1319-2.
Fuzzy Sets Syst., 2003

Evaluating different approaches for indexing fuzzy sets.
Fuzzy Sets Syst., 2003

Three Cases for Query Decorrelation in XQuery.
Proceedings of the Database and XML Technologies, 2003

Quantifiers in XQuery.
Proceedings of the 4th International Conference on Web Information Systems Engineering, 2003

Estimating the Output Cardinality of Partial Preaggregation with a Measure of Clusteredness.
Proceedings of 29th International Conference on Very Large Data Bases, 2003

A Robust Scheme for Multilevel Extendible Hashing.
Proceedings of the Computer and Information Sciences, 2003

Lock-based Protocols for Cooperation on XML Documents.
Proceedings of the 14th International Workshop on Database and Expert Systems Applications (DEXA'03), 2003

Indexstrukturen für XML.
Proceedings of the Web & Datenbanken. Konzepte, Architekturen, Anwendungen, 2003

2002
Anatomy of a native XML base management system.
VLDB J., 2002

Optimized Translation of XPath into Algebraic Expressions Parameterized by Programs Containing Navigational Primitives.
Proceedings of the 3rd International Conference on Web Information Systems Engineering, 2002


2000
Performance enhancements for advanced database management systems.
PhD thesis, 2000

The Implementation and Performance of Compressed Databases.
SIGMOD Rec., 2000

1999
Index structures for efficiently accessing fuzzy data including cost models and measurements.
Fuzzy Sets Syst., 1999

1998
Diag-Join: An Opportunistic Join Algorithm for 1:N Relationships.
Proceedings of the VLDB'98, 1998

1997
Evaluation of Main Memory Join Algorithms for Joins with Set Comparison Join Predicates.
Proceedings of the VLDB'97, 1997


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