The Design and Implementation of Minimal RDFS Backward Reasoning in 4store

Presented at: 8th Extended Semantic Web Conference (ESWC2011)

by Manuel Salvadores, Gianluca Correndo, Steve Harris, Nicholas Gibbins, Nigel Shadbolt

This paper describes the design and implementation of Minimal RDFS semantics based on a backward chaining approach and implemented on a clustered RDF triplestore. The system presented, called 4sr, uses 4store as base infrastructure. In order to achieve a highly scalable system we implemented the reasoning at the lowest level of the quad store, the bind operation. The bind operation runs concurrently in all the data slices allowing the reasoning to be processed in parallel among the cluster. Throughout this paper we provide detailed descriptions of the architecture, reasoning algorithms, and a scalability evaluation with the LUBM benchmark. 4sr is a stable tool available under a GNU GPL3 license and can be freely used and extended by the community.

Keywords: RDFS, Reasoning, SPARQL, Scalability, Triple Store

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