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Full-Text Support for Publish/Subscribe Ontology Systems

Lefteris Zervakis,Christos Tryfonopoulos,Spiros Skiadopoulos,Manolis Koubarakis

Published 2013 in Extended Semantic Web Conference

ABSTRACT

In this work, we envision a publish/subscribe ontology system that is able to index large numbers of expressive continuous queries and filter them against RDF data that arrive in a streaming fashion. To this end, we propose a SPARQL extension that supports the creation of full-text continuous queries and propose a family of main-memory query indexing algorithms which perform matching at low complexity and minimal filtering time. We experimentally compare our approach against a state-of-the-art competitor extended to handle indexing of full-text queries both on structural and full-text tasks using real-world data. Our approach proves two orders of magnitude faster than the competitor in all types of filtering tasks.

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