Istituto di Scienza e Tecnologie dell'Informazione     
Lopes N., Polleres A., Straccia U., Zimmermann A. AnQL: SPARQLing up annotated RDFS. vol. I Patel-Schneider P.F., Pan Y., Hitzler P., Mika P., Zhang L., Pan J.Z., Horrocks I., Glimm B (eds.). (Lecture Notes in Computer Science, vol. 6496). Shanghai: Springer, 2010.
Starting from the general framework for Annotated RDFS which we presented in previous work (extending Udrea et al's Annotated RDF), we address the development of a query language -- AnQL -- that is inspired by SPARQL, including several features of SPARQL~1.1. As a side effect we propose formal definitions of the semantics of these features (subqueries, aggregates, assignment, solution modifiers) which could serve as a basis for the ongoing work in SPARQL~1.1. We demonstrate the value of such a framework by comparing our approach to previously proposed extensions of SPARQL and show that AnQL generalises and extends them.
Subject Temporal Logics
F.4 Mathematical Logic and Formal Languages

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