YARS2: a federated repository for querying graph structured data from the web

Authors:
Andreas Harth;Jürgen Umbrich;Aidan Hogan;Stefan Decker
Affiliations:
National University of Ireland, Galway, Digital Enterprise Research Institute;National University of Ireland, Galway, Digital Enterprise Research Institute;National University of Ireland, Galway, Digital Enterprise Research Institute;National University of Ireland, Galway, Digital Enterprise Research Institute
Venue:
ISWC'07/ASWC'07 Proceedings of the 6th international The semantic web and 2nd Asian conference on Asian semantic web conference
Year:
2007

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Data & Knowledge Engineering

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Abstract

We present the architecture of an end-to-end semantic search engine that uses a graph data model to enable interactive query answering over structured and interlinked data collected from many disparate sources on the Web. In particular, we study distributed indexing methods for graph-structured data and parallel query evaluation methods on a cluster of computers. We evaluate the system on a dataset with 430 million statements collected from the Web, and provide scale-up experiments on 7 billion synthetically generated statements.