OWL-QL—a language for deductive query answering on the Semantic Web
✍ Scribed by Richard Fikes; Patrick Hayes; Ian Horrocks
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 120 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1570-8268
No coin nor oath required. For personal study only.
✦ Synopsis
This paper discusses the issues involved in designing a query language for the Semantic Web and presents the OWL query language (OWL-QL) as a candidate standard language and protocol for query-answering dialogues among Semantic Web computational agents using knowledge represented in the W3Cs ontology web language (OWL). OWL-QL is a formal language and precisely specifies the semantic relationships among a query, a query answer, and the knowledge base(s) used to produce the answer. Unlike standard database and Web query languages, OWL-QL supports query-answering dialogues in which the answering agent may use automated reasoning methods to derive answers to queries, as well as dialogues in which the knowledge to be used in answering a query may be in multiple knowledge bases on the Semantic Web, and/or where those knowledge bases are not specified by the querying agent. In this setting, the set of answers to a query may be of unpredictable size and may require an unpredictable amount of time to compute.