/*******************************************************************************
* Copyright 2013
* Ubiquitous Knowledge Processing (UKP) Lab
* Technische Universität Darmstadt
*
* Licensed 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 de.tudarmstadt.ukp.csniper.ml.tksvm;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.io.IOUtils;
import org.apache.uima.UimaContext;
import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.fit.component.JCasAnnotator_ImplBase;
import org.apache.uima.fit.descriptor.ConfigurationParameter;
import org.apache.uima.fit.testing.util.HideOutput;
import org.apache.uima.fit.util.JCasUtil;
import org.apache.uima.jcas.JCas;
import org.apache.uima.resource.ResourceInitializationException;
import org.cleartk.classifier.Feature;
import org.cleartk.classifier.ScoredOutcome;
import de.tudarmstadt.ukp.csniper.ml.type.BooleanClassification;
import de.tudarmstadt.ukp.csniper.ml.type.ClearTkFeature;
public class TKSVMlightClassifierAnnotator
extends JCasAnnotator_ImplBase
{
public static final String PARAM_MODEL_PATH = "modelPath";
@ConfigurationParameter(name = PARAM_MODEL_PATH, mandatory = true)
public File modelPath;
private TKSVMlightClassifier classifier;
@Override
public void initialize(UimaContext aContext)
throws ResourceInitializationException
{
super.initialize(aContext);
try {
// load tksvm classifier
TKSVMlightClassifierBuilder builder = new TKSVMlightClassifierBuilder();
classifier = builder.loadClassifierFromTrainingDirectory(modelPath);
}
catch (IOException e) {
throw new ResourceInitializationException(e);
}
}
@Override
public void process(JCas aJCas)
throws AnalysisEngineProcessException
{
HideOutput hide = new HideOutput();
List<Feature> features = new ArrayList<Feature>();
BooleanClassification bc;
bc = JCasUtil.selectSingle(aJCas, BooleanClassification.class);
for (ClearTkFeature ctkf : JCasUtil.select(aJCas, ClearTkFeature.class)) {
features.add(new Feature(ctkf.getClearTkFeatureName(), ctkf.getClearTkFeatureValue()));
}
ScoredOutcome<Boolean> out = classifier.score(features);
bc.setPredictedLabel(out.getOutcome());
bc.setScore(out.getScore());
hide.restoreOutput();
}
}