Accessing class definitions

[Rajarshi Guha]

Hi, I'm using Owlready2 to parse an OWL file and I'd like to extract the definition of classes. In particular, i'm working with the Bioassay Ontology (http://www.bioassayontology.org/) where a class is usually defined using the the following RDF snippet:

    <owl:Class rdf:about="http://www.bioassayontology.org/bao#BAO_0000074">
        <rdfs:subClassOf rdf:resource="http://www.bioassayontology.org/bao#BAO_0003115"/>
        <obo:IAO_0000115>This refers to the effect of the perturbagen on the target of an assay, whether it brings about inhibition, activation, cytotoxicity, etc. </obo:IAO_0000115>
        <obo:IAO_0000118>MOA</obo:IAO_0000118>
        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">mode of action</rdfs:label>
    </owl:Class>

The definition is specified using obo:IAO_0000115 and when I view the OWL file in Protege, it is able to extract the text for this term and show it as the definition.

Can this be done using Owlready2?

[Jiba]

Hello,

Of course you can:

>>> from owlready2 import *

>>> onto = get_ontology("http://www.bioassayontology.org/bao/bao_complete.owl").load()

>>> IRIS["http://www.bioassayontology.org/bao#BAO_0000074"].label
['mode of action']

>>> IRIS["http://www.bioassayontology.org/bao#BAO_0000074"].IAO_0000115
['This refers to the effect of the perturbagen on the target of an assay, whether it brings about inhibition, activation, cytotoxicity, etc. ']


Best regards,
Jean-Baptiste Lamy
MCF HDR, Laboratoire LIMICS, Université Paris 13