Welcome to the Homepage of SQUIN
SQUIN is a query interface for the Web of Linked Data. The query system in SQUIN implements a novel query execution paradigm called link traversal based query execution.
News
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February 24th, 2012
Our paper, titled "SPARQL for a Web of Linked Data: Semantics and Computability", has been accepted for this year's Extended Semantic Web Conference in Heraklion, Greece. In the paper we formally investigate the applicability of SPARQL as a query language for Linked Data on the Web.
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June 10, 2011
With release 0.1.3 SQUIN supports URI search (via the Sindice search engine) as part of the URI look-up process during query execution. Take a look at the Change Log.
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May 20, 2011
With release 0.1.2 SQUIN becomes completely independent of NG4J. For this release I developed a new, independent component for URI dereferencing and, thus, replaced the last bits of code that were depending on functionality implemented in the NG4J Semantic Web Client Library.
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May 2, 2011
I finally found the time to finish and to package the new link traversal based query execution system for SQUIN. [...]
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Publications
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Olaf Hartig, Christian Bizer, and Johann-Christoph Freytag:
Executing SPARQL Queries over the Web of Linked Data.
In Proceedings of the 8th International Semantic Web Conference (ISWC), Washington, DC, USA,
Oct. 2009
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Olaf Hartig:
Zero-Knowledge Query Planning for an Iterator Implementation of Link Traversal Based Query Execution.
In Proceedings of the 8th Extended Semantic Web Conference (ESWC), Heraklion, Greece,
Jun. 2011
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Olaf Hartig:
How Caching Improves Efficiency and Result Completeness for Querying Linked Data.
In Proceedings of the 4th Linked Data on the Web (LDOW) Workshop at the World Wide Web Conference (WWW), Hyderabad, India,
Mar. 2011
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Olaf Hartig and Frank Huber:
A Main Memory Index Structure to Query Linked Data.
In Proceedings of the 4th Linked Data on the Web (LDOW) Workshop at the World Wide Web Conference (WWW), Hyderabad, India,
Mar. 2011
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Olaf Hartig:
SPARQL for a Web of Linked Data: Semantics and Computability.
In Proceedings of the 9th Extended Semantic Web Conference (ESWC), Heraklion, Greece,
May 2012
... Extended Version in CoRR (abs/1203.1569)
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Olaf Hartig and Johann-Christoph Freytag:
Foundations of Traversal Based Query Execution over Linked Data.
In Proceedings of the 23rd ACM Conference on Hypertext and Social Media (HT), Semantic Data Track, Milwaukee, WI, USA,
Jun. 2012
... Extended Version in CoRR (abs/1108.6328)
Team
Olaf Hartig
Juan Sequeda
Links
