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Completed research project

Title / Titel The Scalable Triple Store
PDF Abstract (PDF, 14 KB)
Summary / Zusammenfassung The vision of the Semantic Web is to allow everybody to publish interlinked machine-processable information with the ease of publishing a web page. The basis for this vision is a standardized language for publishing these information called Resource Description Format (RDF) that uses typed graphs as its major abstraction. A number of toolkits for processing and storing RDF-based data exist. They are typically called triple stores, due to the 3-tuple (or triple) based nature of the building blocks of a typed graph, each triple storing one of the RDF elements (Subject, Predicate, Object). Most existing triple stores, however, scale rather poorly.

With the rapid growth of RDF based data on the Internet, it is becoming increasingly more challenging to query semantic data sources. Current solutions include crawling of Linked Open Data (LOD) or federated query (SPARQL) processing. Scalable methods to retrieve and process such information stil remain open problems to date.
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Publications / Publikationen Cathrin Weiss, Panagiotis Karras, Abraham Bernstein, Hexastore: Sextuple Indexing for Semantic Web Data Management, Proc. of the 34th Intl Conf. on Very Large Data Bases (VLDB), February 2008. (inproceedings)

Cathrin Weiss, Abraham Bernstein, Sandro Boccuzzo, i-MoCo: Mobile Conference Guide ? Storing and querying huge amounts of Semantic Web data on the iPhone/iPod Touch, 7th International Semantic Web Conference, October 2008. (inproceedings)

Cathrin Weiss, Abraham Bernstein, On-disk storage techniques for Semantic Web data - Are B-Trees always the optimal solution?, Proceedings of the 5th International Workshop on Scalable Semantic Web Knowledge Base Systems, October 2009.

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Keywords / Suchbegriffe large scale data storage, data storage, database management systems, graph data base, triples, semantic web
Project leadership and contacts /
Projektleitung und Kontakte
Prof Abraham Bernstein, PhD (Project Leader)
Robert Warren, PhD
Cosmin Basca
Cathrin Weiss
Other links to external web pages
Funding source(s) /
Unterstützt durch
Universität Zürich (position pursuing an academic career), SNF (Personen- und Projektförderung)
Duration of Project / Projektdauer Jan 2008 to Jul 2015