A PieceOfKnowledge (or PoK) object should be understood as the definition provided by the W3C in its resource description framework.
One can note that we involve the RDF methodology concepts and design formalisms which should not be misunderstood as the RDF/XML
serialisation format. Each PoK is composed of a set of RDF statements composed of a set of triples: subject, property and object.
Thus, any description can be applied on any resource as soon as the property and object elements refer to a consistent vocabulary in a
certain domain. This vocabulary could be expressed in accordance to a specified ontology. However, one of the project's guidelines
is extensibility, thus PieceOfKnowledge should be extendable using any OWLS or RDFS. The set of triple statements describing a
resource will be contained in the PieceOfKnowledge object serialised in the RDF/XML format. Since a PoK is a resource, it can also
contain Annotations. The contained statements can be seen as meta-Annotations describing, for example, how and when the first level
of annotations has been created (which service with what resource or configuration).
Data Exchange Model for WebLab platform provided by CASSIDIAN Version 1.2.1 - 2011/05
Java class for PieceOfKnowledge complex type.
The following schema fragment specifies the expected content contained within this class.
<complexType name="PieceOfKnowledge">
<complexContent>
<extension base="{http://weblab.ow2.org/core/1.2/model#}Resource">
<sequence>
<element name="data" type="{http://www.w3.org/2001/XMLSchema}anyType"/>
</sequence>
</extension>
</complexContent>
</complexType>