Recent research in the area of ontology representation for the Semantic Web has led to several different language proposals. Among the others, it led to the standardization of OWL, on one hand, and to the emergence of the DL-Lite family of Description Logics, on the other hand. These two outcomes mainly differ on their objective: while OWL aims to be a standard, and as such, it is tailored towards expressivity, the main goal of the languages in the DL-Lite family is to allow accessing huge amount of data, by maintaining tractability, and delegating query processing to a DBMS. In this paper we show how DL-Lite can meet OWL. Specifically, we focus on DL-LiteA, the language in the DL-Lite family that is closest to OWL, and introduce the SparSQL language, a concrete epistemic query language, inspired by both SQL and SPARQL, that allows posing expressive tractable queries over DL-LiteA ontologies. Finally, we introduce the main novel DL-LiteA features beyond OWL. The capability of handling such features, together with the SparSQL queries, are some of the new functionalities recently implemented in the MASTRO system.
When OWL met DL-Lite.. / Corona, Claudio; Emma Di, Pasquale; Poggi, Antonella; Ruzzi, Marco; Savo, Domenico Fabio. - 426:(2008). (Intervento presentato al convegno Fifth Workshop on Semantic Web Applications and Perspectives (SWAP2008) tenutosi a Rome nel December 16-17, 2008).
When OWL met DL-Lite...
CORONA, CLAUDIO;POGGI, Antonella;RUZZI, MARCO;SAVO, Domenico Fabio
2008
Abstract
Recent research in the area of ontology representation for the Semantic Web has led to several different language proposals. Among the others, it led to the standardization of OWL, on one hand, and to the emergence of the DL-Lite family of Description Logics, on the other hand. These two outcomes mainly differ on their objective: while OWL aims to be a standard, and as such, it is tailored towards expressivity, the main goal of the languages in the DL-Lite family is to allow accessing huge amount of data, by maintaining tractability, and delegating query processing to a DBMS. In this paper we show how DL-Lite can meet OWL. Specifically, we focus on DL-LiteA, the language in the DL-Lite family that is closest to OWL, and introduce the SparSQL language, a concrete epistemic query language, inspired by both SQL and SPARQL, that allows posing expressive tractable queries over DL-LiteA ontologies. Finally, we introduce the main novel DL-LiteA features beyond OWL. The capability of handling such features, together with the SparSQL queries, are some of the new functionalities recently implemented in the MASTRO system.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
