/**
* 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
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*/
package org.apache.ctakes.temporal.ae.feature;
import java.util.ArrayList;
import java.util.List;
import org.apache.ctakes.typesystem.type.constants.CONST;
import org.apache.ctakes.typesystem.type.textsem.EventMention;
import org.apache.ctakes.utils.struct.CounterMap;
import org.apache.uima.jcas.JCas;
import org.apache.uima.jcas.tcas.Annotation;
import org.cleartk.classifier.Feature;
import org.cleartk.classifier.feature.extractor.CleartkExtractorException;
import org.cleartk.classifier.feature.extractor.simple.SimpleFeatureExtractor;
import org.uimafit.util.JCasUtil;
import com.google.common.collect.Lists;
public class UmlsSingleFeatureExtractor implements SimpleFeatureExtractor {
@Override
public List<Feature> extract(JCas jCas, Annotation focusAnnotation)
throws CleartkExtractorException {
List<Feature> features = new ArrayList<Feature>();
JCas systemView = jCas;
// try {
// systemView = jCas.getView("_InitialView");
// } catch (CASException e) {
// throw new AnalysisEngineProcessException(e);
// }
List<String> eventTypes = Lists.newArrayList();
if(focusAnnotation instanceof EventMention) {
// List<EntityMention> entityMentions = JCasUtil.selectCovering(systemView, EntityMention.class, arg1.getBegin(), arg1.getEnd());
CounterMap<String> typeCounts =
getMentionTypes(JCasUtil.selectCovering(systemView, EventMention.class, focusAnnotation.getBegin(), focusAnnotation.getEnd()));
// print out totals:
for(String typeId : typeCounts.keySet()){
String featName = "eventTypeID_"+typeId;
eventTypes.add(featName);
features.add(new Feature(featName, typeCounts.get(typeId)));
}
// TO print out just the types without counts:
// for(String typeId : typeCounts.keySet()){
// features.add(new Feature("arg1EntityTypeID_", typeId));
// }
// TODO: this is the correct implementatino, but it does not perform as well
// for(int typeID : uniqueTypeIDs) {
// features.add(new Feature("arg1EntityTypeID", String.valueOf(typeID)));
// }
}
return features;
}
private static CounterMap<String> getMentionTypes(List<EventMention> entities){
CounterMap<String> typeCounts = new CounterMap<String>();
for(EventMention entityMention : entities) {
if(entityMention.getDiscoveryTechnique() == CONST.NE_DISCOVERY_TECH_DICT_LOOKUP)
typeCounts.add(String.valueOf(entityMention.getTypeID()));
}
return typeCounts;
}
}