Thesis full text (PDF) - Politecnico di Milano

3.3.1.5 Instances of a class assuming any value on a known property Pattern
This pattern checks the existence of property values in the knowledge base, deducts those that
have being assumed to known properties, and then extracts the instances being assigned with
these properties values. It encompasses two exploration components: (i) the Property Value
Component configured with a PropertyValueOfProperty selection condition with
BooleanOperator OR to retrieve the property values of specific properties in the knowledge base,
and (ii) the Instance Component configured with a InstanceOfClass and a
InstanceWithPropertyValue selection conditions and the BooleanOperator OR to retrieve the
instances having at least one of the previous property values. The Complex Query class invokes
the query component methods: the property input is transferred to the Property Value
Component, the class input and the deducted property values become the input for the Instance
Component, and finally, the deducted instances are returned to the user.
Figure 3.29: Instances of a class assuming any value on a known property Pattern
3.3.1.6 Instances of a class assuming known values on any property Pattern
This pattern checks the existence of property values in the knowledge base, deducts those with
known values not being restricted by the properties on which they are assigned, and then extracts
the instances being assigned with these properties values. It encompasses two exploration
components: (i) the Property Value Component configured with a PropertyValueOfName
selection condition (implicit BooleanOperator OR) to retrieve the property values of specific
value in the knowledge base, and (ii) the Instance Component configured with a InstanceOfClass
and a InstanceWithPropertyValue selection conditions and the BooleanOperator OR to retrieve
the instances having at least one of the previous property values. The Complex Query class
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