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Talk Announcement: Evaluating SPARQL++ - preliminary results, by Axel Polleres



The Database & Artificial Intelligence Group of the Information Systems Institute
invites to the following talk:
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Axel Polleres
DERI, National University of Ireland, Galway

Date: Monday, June 18th 2007

Time:  10:00

Place: Seminarroom 184/3 (KBS), Favoritenstraße 9-11/1843, 3rd floor
(when you leave the elevator turn left, go through the corridor, then turn left twice to the red area)


Title: Evaluating SPARQL++ - preliminary results
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Abstract:SPARQL is the upcoming query language for the Semantic Web, at the moment short
before getting the standards recommendation from W3C.
In this talk we will discuss preliminary results on translating SPARQL++ to
Logic Programming under the Answer Set Semantics. SPARQL++ is an extended
version of the RDF query language SPARQL enriching its basic concepts by
ontology mappings, RDFS inferences, built-in functions and aggregates. We will
show that these extensions nicely fit with an evaluation in Datalog engines.
Since the proposed added constructs in SPARQL++ increase the expressivity of
SPARQL, new challenges arise for efficient query evaluation algorithms.
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Short Bio:

Dr. Axel Polleres (http://www.polleres.net/) obtained his PhD in Computer
Science at the Vienna University of Technology in 2003. He was working at DERI
at the Leopold-Franzens Universitaet Innsbruck in the areas of Semantic Web
Services, Ontologies, Rules Languages and Logic Programming from 2003 to early
2006. Continuing this research he worked at Universidad Rey Juan Carlos, Madrid, under a "Juan de la Cierva" research fellowship until March 2007 and joined DERI
Galway at the National University of Ireland, Galway, in April 2007. Dr.
Polleres published more than 30 articles in journals, books and as refereed
Conference and Workshop contributions.Ongoing research projects and working
groups he is participating in include WSMO, WSML, and the W3C Rule Interchange
Format (RIF) WG.