org.apache.stanbol.entityhub.servicesapi.query
Class SimilarityConstraint

java.lang.Object
  org.apache.stanbol.entityhub.servicesapi.query.Constraint
      org.apache.stanbol.entityhub.servicesapi.query.SimilarityConstraint

public class SimilarityConstraint
extends Constraint

Ensure that results have fields that is contextually similar. The implementation is typically based on a cosine similarity score a normalized vector space of term frequencies - inverse document frequencies as done by the MoreLikeThis feature of Solr for instance. This type of constraint might not be supported by all the yard implementations. If it is not supported it is just ignored.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.stanbol.entityhub.servicesapi.query.Constraint

Constraint.ConstraintType

Field Summary

protected List<String>	additionalFields
protected String	context

Constructor Summary

SimilarityConstraint(String context)

SimilarityConstraint(String context, List<String> additionalFields)

Method Summary

List<String>	getAdditionalFields() Additional fields used for similarity calculations
String	getContext() The context used for checking the similarity

Methods inherited from class org.apache.stanbol.entityhub.servicesapi.query.Constraint

getType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

context

protected final String context

additionalFields

protected final List<String> additionalFields

Constructor Detail

SimilarityConstraint

public SimilarityConstraint(String context)

SimilarityConstraint

public SimilarityConstraint(String context,
                            List<String> additionalFields)

Method Detail

getAdditionalFields

public List<String> getAdditionalFields()

Additional fields used for similarity calculations

Returns:

getContext

public String getContext()

The context used for checking the similarity

Returns: