/**
* 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.assertion.attributes.features;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import org.apache.ctakes.assertion.attributes.generic.GenericAttributeClassifier;
import org.apache.ctakes.assertion.attributes.subject.SubjectAttributeClassifier;
import org.apache.ctakes.dependency.parser.util.DependencyUtility;
import org.apache.ctakes.typesystem.type.syntax.ConllDependencyNode;
import org.apache.uima.jcas.JCas;
import org.apache.uima.jcas.tcas.Annotation;
import org.cleartk.classifier.Feature;
import org.cleartk.classifier.feature.extractor.simple.SimpleFeatureExtractor;
/** SubjectFeaturesExtractor
* Ports the features and classification decisions of the first version (logic) of the subject tool
*
* @author m081914
*
*/
public class GenericFeaturesExtractor implements SimpleFeatureExtractor {
@Override
public List<Feature> extract(JCas jCas, Annotation arg) {
List<Feature> features = new ArrayList<Feature>();
// Pull in general dependency-based features -- externalize to another extractor?
ConllDependencyNode node = DependencyUtility.getNominalHeadNode(jCas, arg);
if (node!= null) {
features.add(new Feature("DEPENDENCY_HEAD", node.getCoveredText()));
features.add(new Feature("DEPENDENCY_HEAD_deprel", node.getDeprel()));
}
HashMap<String, Boolean> featsMap = GenericAttributeClassifier.extract(jCas, arg);
// Pull in all the features that were used for the rule-based module
features.addAll( hashToFeatureList(featsMap) );
// Pull in the result of the rule-based module as well
features.add(new Feature("GENERIC_CLASSIFIER_LOGIC", GenericAttributeClassifier.classifyWithLogic(featsMap)));
return features;
}
private Collection<? extends Feature> hashToFeatureList(
HashMap<String, Boolean> featsIn) {
Collection<Feature> featsOut = new HashSet<Feature>();
for (String featName : featsIn.keySet()) {
featsOut.add(new Feature(featName,featsIn.get(featName)));
}
return featsOut;
}
}