A Prolog-based Query Language for OWL

A Prolog-based Query Language for OWL

In this paper we investigate how to use logic programming (in particular, Prolog) as query language against OWL resources. Our query language will be able to retrieve data and meta-data about a given OWL based ontology. With this aim, firstly, we study how to define a query language based on a fragment of Description Logic, then we show how to encode the defined query language into Prolog by me...

Bousi~Prolog: a Prolog Extension Language for Flexible Query Answering

In this paper we present the main features an implementation details of a programming language that we call Bousi∼Prolog. It can be seen as an extension of Prolog able to deal with similarity-based fuzzy unification (“Bousi” is the Spanish acronym for “fuzzy unification by similarity”). The main goal is the implementation of a declarative programming language well suited for flexible query answ...

SQWRL: A Query Language for OWL

A Query Language for OWL based on Logic Programming

In this paper we investigate how to use logic programming (in particular, Prolog) as query language against OWL resources. Our query language will be able to retrieve data and meta-data about a given OWL based ontology. With this aim, firstly, we study how to define a query language based on a fragment of Description Logic, then we show how to encode the defined query language into Prolog by me...

OWL SAIQL - An OWL DL Query Language for Ontology Extraction

Existing approaches for querying OWL DL do either only operate on syntactic constructs without taking into account the semantics of OWL or do only have a restricted access to the T-Box. We present SAIQL, the novel Schema And Instance Query Language for OWL DL, that is well suited for ontology extraction. We describe its syntax and explain a basic evaluation strategy. We illustrate the use of SA...