KRR-Oxford / PAGOdA

A conjunctive query answering engine over OWL 2 ontologies

PAGOdA

PAGOdA is a conjunctive query answering engine for OWL 2 ontologies.

Project dependencies/requirements

• This software has been developed for Linux
• JavaSE 8
• Maven

Building and packaging

This is a Maven project, hence Maven should be used for building and packaging.

• Compile mvn compile
• Create jars mvn package; you will get a jar without dependencies target/pagoda-x.y.z.jar and a runnable jar with dependencies target/pagoda-x.y.z-jar-with-dependencies.jar.
• Execute tests mvn test -DskipTests=false;

Configuring the engine

The engine provides a standard configuration, but it is most likely that is not suitable for your purposes. You should provide your own configuration in a file called pagoda.properties including it in the classpath. Such a file should resemble the file src/resources/_default_pagoda.properties.

Executing

Once you have the runnable jar, you can make the system answer queries through the command line interface.

Run java -jar pagoda-x.y.z-jar-with-dependencies.jar for getting a list of the mandatory arguments and optional parameters.

Run java -cp pagoda-x.y.z-jar-with-dependencies.jar:<your_path_to_properties>/pagoda.properties arg [arg]... for executing the engine with a custom configuration.

Using it as a library

The API is offered by the class QueryReasoner, however we provide a more handy wrapper, that is the class Pagoda. Thanks to such a wrapper, you can build an instance of Pagoda by specifying different parameters and after that you will get a runnable Pagoda object.