[Semantic Web]OWL Query Language

读书笔记,  电脑与网络 Lee 发表于 2006/2/22 23:05:36     OWL Query Language (OWL-QL) is a formal language and protocol for a querying agent and an answering agent to use in conducting a query-answering dialogue using knowledge represented in the Ontology Web Language (OWL) . OWL-QL is an updated version of the DAML Query Language (DQL) developed by the Joint United States/European Union ad hoc Agent Markup Language Committee1, and the authors of this paper, who are members of that committee, are the editors of both the DQL specification  and the OWL-QL specification.     OWL-QL is intended to be a candidate standard language and protocol for query-answering dialogues among Semantic Web computational agents during which answering agents (which we refer to as servers) may derive answers to questions posed by querying agents (which we refer to as clients). As such, it is designed to be suitable for a broad range of query-answering services and applications. Also, although OWL-QL is specified for use with OWL, it is designed to be prototypical and easily adaptable to other declarative formal logic representation languages, including, in particular, first-order logic languages such as KIF and the earlier W3C languages, RDF, RDF-S , and DAML+OIL .     The OWL-QL Web site (http://ksl.stanford.edu/projects/owl-ql/) provides links to the OWL-QL specification and to current OWL-QL implementations, including an OWL-QL client with a Web browser user interface suitable for use by humans for asking queries of an OWL-QL server. This paper describes OWL-QL and discusses significant design issues that arise in the development of a language for deductive query answering on the Semantic Web.                                       ----from OWL-QL – A Language for Deductive Query Answering on the Semantic Web

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