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SUMMARY:Ontology-Based Data Access and Integration
DTSTART:20090202T161500
DTSTAMP:20260407T211000Z
UID:1e3dc20711b74c5f95b41517c929686266dd59a9a4c06b90538b5475
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Diego Calvanese\, Free University of Bozen-Bolzano\, Ita
 ly\nMany organizations nowadays face the problem of accessing existing dat
 a sources by means of mechanisms that are sufficiently expressive without 
 compromising efficiency. Ontologies allow one to describe the domain of in
 terest of an information system at a high level of abstraction\, and are w
 idely considered as a suitable formal tool for sophisticated data access. 
 In this talk we provide an overview of the problem of ontology-based data 
 access\, both from the theoretical and from the practical points of view. 
 We address several problems that are crucial in this context: the trade-of
 f between the expressive power of the ontology language and the efficiency
  of computing answers to queries\; the processing of queries posed over th
 e ontology by accessing the data stored in the sources\; the impedance mis
 match between the abstract objects at the ontology level and the concrete 
 data values stored in data sources\; and the integration of multiple data 
 sources. We present solutions to these problems based on recent research r
 esults in the area of tractable Description Logics\, and present the QuOnt
 o system\, implementing these solutions.\n\n\n\nBIO\nDiego Calvanese is as
 sociate professor at the KRDB Research Centre of the Faculty of Computer S
 cience\, Free University of Bozen-Bolzano\, where he teaches courses on th
 eory of computing\, formal languages\, and information integration.  His r
 esearch interests include formalisms for knowledge representation and reas
 oning\, ontology languages\, Description Logics\, conceptual data modeling
 \, data integration\, semistructured data management\, and web service mod
 eling and composition.  He participated in several national and internatio
 nal research projects\, and he is the coordinator of the EU STREP FET Proj
 ect "Thinking ONtologiES" (TONES).  He is the author of more than 150 publ
 ications in international journals\, conferences\, and workshops\, and he 
 is one of the editors of the "Description Logics Handbook".\n\nD. Calvanes
 e's homepage
LOCATION:INM202
STATUS:CONFIRMED
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