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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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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July 13, 2010
Our recent article "A Database Perspective on Consuming Linked Data on the Web" compares the query execution approach in SQUIN with other approaches to execute queries over multiple linked datasets [...]
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November 12th, 2009
We presented SQUIN and the query execution approach implemented by SWClLib and SQUIN at the International Semantic Web Conference (ISWC) in Washington, DC and during several other occasions in the US. Read about this trip on the SQUIN blog. Furthermore, during ISWC we used SQUIN to develop a simple Linked Data based application and we wrote about our experiences [...]
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August 14th, 2009
SQUIN understands RDFa due to the new RDFa support in the Semantic Web Client Library. This means the query results provided by SQUIN now also reflect RDF data that is embedded in HTML documents using RDFa.
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August 5th, 2009
Our paper, titled "Executing SPARQL Queries over the Web of Linked Data", has been accepted for this year's International Semantic Web Conference in Washington, DC. The paper describes the approach to query the Web of Linked Data as it is implemented in the Semantic Web Client Library that powers SQUIN.
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June 18th, 2009
Juan presented SQUIN at the Semantic Technology Conference in San Jose
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June 18th, 2009
We created a mailing list for SQUIN users.
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May 31st, 2009
Researchers Map won the Scripting Challenge!!!
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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 In Proceedings of the 8th European 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 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 In Proceedings of the 4th Linked Data on the Web (LDOW) Workshop at the World Wide Web Conference (WWW), Hyderabad, India,
Mar. 2011
Team
Olaf Hartig
Juan Sequeda
Links
