/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.ctakes.temporal.ae.feature;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.ctakes.relationextractor.ae.features.RelationFeaturesExtractor;
import org.apache.ctakes.typesystem.type.textsem.EventMention;
import org.apache.ctakes.typesystem.type.textsem.IdentifiedAnnotation;
import org.apache.ctakes.typesystem.type.textspan.Sentence;
import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.jcas.JCas;
import org.cleartk.classifier.Feature;
import org.uimafit.util.JCasUtil;
public class EventArgumentPropertyExtractor implements
RelationFeaturesExtractor {
@Override
public List<Feature> extract(JCas jCas, IdentifiedAnnotation arg1,
IdentifiedAnnotation arg2) throws AnalysisEngineProcessException {
List<Feature> feats = new ArrayList<Feature>();
Sentence coveringSent = JCasUtil.selectCovering(jCas, Sentence.class, arg1.getBegin(), arg1.getEnd()).get(0);
List<EventMention> events = JCasUtil.selectCovered(EventMention.class, coveringSent);
List<EventMention> realEvents = new ArrayList<EventMention>();
for(EventMention event : events){
// filter out ctakes events
if(event.getClass().equals(EventMention.class)){
realEvents.add(event);
}
}
events = realEvents;
EventMention anchor = events.get(0);
if(arg1.getBegin() == anchor.getBegin() && arg1.getEnd() == anchor.getEnd()){
feats.add(new Feature("Arg1LeftmostEvent"));
}else if(arg2.getBegin() == anchor.getBegin() && arg2.getEnd() == anchor.getEnd()){
feats.add(new Feature("Arg2LeftmostEvent"));
}
if(arg1 instanceof EventMention){
feats.addAll(getEventFeats("mention1property", (EventMention)arg1));
}
if(arg2 instanceof EventMention){
feats.addAll(getEventFeats("mention2property", (EventMention)arg2));
}
return feats;
}
private static Collection<? extends Feature> getEventFeats(String name, EventMention mention) {
List<Feature> feats = new ArrayList<Feature>();
feats.add(new Feature(name + "_modality", mention.getEvent().getProperties().getContextualModality()));
feats.add(new Feature(name + "_aspect", mention.getEvent().getProperties().getContextualAspect()));
feats.add(new Feature(name + "_permanence", mention.getEvent().getProperties().getPermanence()));
feats.add(new Feature(name + "_polarity", mention.getEvent().getProperties().getPolarity()));
feats.add(new Feature(name + "_category", mention.getEvent().getProperties().getCategory()));
feats.add(new Feature(name + "_degree", mention.getEvent().getProperties().getDegree()));
feats.add(new Feature(name + "_doctimerel", mention.getEvent().getProperties().getDocTimeRel()));
return feats;
}
}