org.apache.ctakes.relationextractor.ae

Class CausesBringsAboutRelationExtractorAnnotator

java.lang.Object

org.apache.ctakes.relationextractor.ae.RelationExtractorAnnotator

org.apache.ctakes.relationextractor.ae.CausesBringsAboutRelationExtractorAnnotator

public class CausesBringsAboutRelationExtractorAnnotator
extends RelationExtractorAnnotator

Identifies causes/brings_about relation. In SHARP data the arguments are the following: arg1: anatomical sites, disease/disorder, medications, procedures, signs/symptoms, entity mentions arg2: disease/disorder, procedures, signs/symptoms, entity mentions, event mentions, labs But for now, only considering only the most frequent cases: arg1: procedure, medication, disease/disorder arg2: disease/disorder, sign/symptom

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.ctakes.relationextractor.ae.RelationExtractorAnnotator

RelationExtractorAnnotator.IdentifiedAnnotationPair

Field Summary

Fields inherited from class org.apache.ctakes.relationextractor.ae.RelationExtractorAnnotator

coin, NO_RELATION_CATEGORY, PARAM_PROBABILITY_OF_KEEPING_A_NEGATIVE_EXAMPLE, probabilityOfKeepingANegativeExample

Constructor Summary

Constructors

Constructor and Description
CausesBringsAboutRelationExtractorAnnotator()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	createRelation(JCas jCas, IdentifiedAnnotation arg1, IdentifiedAnnotation arg2, java.lang.String predictedCategory) Create a UIMA relation type based on arguments and the relation label.
java.util.List<RelationExtractorAnnotator.IdentifiedAnnotationPair>	getCandidateRelationArgumentPairs(JCas identifiedAnnotationView, Annotation sentence) Selects the relevant mentions/annotations within a covering annotation for relation identification/extraction.
protected java.lang.Class<? extends Annotation>	getCoveringClass()
protected java.lang.Class<? extends BinaryTextRelation>	getRelationClass()

Methods inherited from class org.apache.ctakes.relationextractor.ae.RelationExtractorAnnotator

allowClassifierModelOnClasspath, classify, getFeatureExtractors, getRelationCategory, initialize, process

Methods inherited from class java.lang.Object

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

Constructor Detail

CausesBringsAboutRelationExtractorAnnotator

public CausesBringsAboutRelationExtractorAnnotator()

Method Detail

getRelationClass

protected java.lang.Class<? extends BinaryTextRelation> getRelationClass()

Overrides:

getRelationClass in class RelationExtractorAnnotator

getCandidateRelationArgumentPairs

public java.util.List<RelationExtractorAnnotator.IdentifiedAnnotationPair> getCandidateRelationArgumentPairs(JCas identifiedAnnotationView,
                                                                                                    Annotation sentence)

Description copied from class: RelationExtractorAnnotator

Selects the relevant mentions/annotations within a covering annotation for relation identification/extraction.

Specified by:

getCandidateRelationArgumentPairs in class RelationExtractorAnnotator

createRelation

protected void createRelation(JCas jCas,
                  IdentifiedAnnotation arg1,
                  IdentifiedAnnotation arg2,
                  java.lang.String predictedCategory)

Description copied from class: RelationExtractorAnnotator

Create a UIMA relation type based on arguments and the relation label. This allows subclasses to create/define their own types: e.g. coreference can create CoreferenceRelation instead of BinaryTextRelation

Overrides:

createRelation in class RelationExtractorAnnotator

Parameters:

jCas - - JCas object, needed to create new UIMA types

arg1 - - First argument to relation

arg2 - - Second argument to relation

predictedCategory - - Name of relation

getCoveringClass

protected java.lang.Class<? extends Annotation> getCoveringClass()

Specified by:

getCoveringClass in class RelationExtractorAnnotator