如何使用SWI-Prolog的语义网库查询RDF/OWL? [英] How to query RDF/OWL using SWI-Prolog's Semantic Web Library?

问题描述

如何使用SWI-Prolog语义网络库对OWL/RDF文件进行查询并提取一些信息?

How can I use the SWI-Prolog Semantic Web Library to make a query into the OWL/RDF file and extract some information?

OWL/RDF文件包含有关所有Debian软件包的信息，因此我需要进行查询才能找到软件包的依赖关系.

The OWL/RDF file is having information about all the Debian packages so I need to make the query in order to find package dependencies.

例如:

OWL文件的结构如下:

The OWL file is structured as follows:

package: A

Depends:

package: B

pacakge: C

如何将OWL/RDF文件加载到Prolog脚本中，以及在Prolog脚本中进行查询的语法是什么，以便我将A用作参数，并且脚本输出B和C?

How can I load a OWL/RDF file into a Prolog script and what is the syntax to make a query within the Prolog script such that I put A as a parameter and the script outputs B and C?

推荐答案

这是加载 semweb 库的方式:

?- use_module(library(semweb/rdf_db)).

这是解析RDF/XML文件并回溯其所有subject-predicate-object三元组的方式:

This is how you parse an RDF/XML file and backtrack over all its subject-predicate-object triples:

?- rdf_load('file.owl'), rdf(X, Y, Z).
% Parsed "file.owl" in 0.06 sec; 2,107 triples
X = 'http://www.co-ode.org/ontologies/pizza/pizza.owl',
Y = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type',
Z = 'http://www.w3.org/2002/07/owl#Ontology' ;
X = 'http://www.co-ode.org/ontologies/pizza/pizza.owl',
Y = 'http://www.w3.org/2002/07/owl#versionInfo',
Z = literal(type('http://www.w3.org/2001/XMLSchema#string', 'version 1.5')) ;

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