de.tudarmstadt.ukp.dkpro.tc.ml.modelpersist.ModelPersistUtil.java Source code

Introduction

Here is the source code for de.tudarmstadt.ukp.dkpro.tc.ml.modelpersist.ModelPersistUtil.java

Source

/*******************************************************************************
 * Copyright 2015
 * Ubiquitous Knowledge Processing (UKP) Lab
 * Technische Universitt 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.dkpro.tc.ml.modelpersist;

import static de.tudarmstadt.ukp.dkpro.tc.core.Constants.MODEL_FEATURE_EXTRACTORS;
import static de.tudarmstadt.ukp.dkpro.tc.core.Constants.MODEL_META;
import static de.tudarmstadt.ukp.dkpro.tc.core.Constants.MODEL_PARAMETERS;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.io.FileUtils;

import de.tudarmstadt.ukp.dkpro.tc.core.ml.TCMachineLearningAdapter;

public class ModelPersistUtil {
    public static TCMachineLearningAdapter initMachineLearningAdapter(File tcModelLocation) throws Exception {
        File modelMeta = new File(tcModelLocation, MODEL_META);
        String fileContent = FileUtils.readFileToString(modelMeta);
        Class<?> classObj = Class.forName(fileContent);
        return (TCMachineLearningAdapter) classObj.newInstance();
    }

    public static List<String> initFeatureExtractors(File tcModelLocation) throws Exception {
        List<String> featureExtractors = new ArrayList<>();
        File featureExtractorsDescription = new File(tcModelLocation, MODEL_FEATURE_EXTRACTORS);
        List<String> featureConfiguration = FileUtils.readLines(featureExtractorsDescription);
        for (String featureExtractor : featureConfiguration) {
            featureExtractors.add(featureExtractor);
        }
        return featureExtractors;
    }

    public static List<Object> initParameters(File tcModelLocation) throws IOException {
        List<Object> parameters = new ArrayList<>();
        for (String parameter : FileUtils.readLines(new File(tcModelLocation, MODEL_PARAMETERS))) {
            if (!parameter.startsWith("#")) {
                String[] parts = parameter.split("=");
                parameters.add(parts[0]);

                if (isExistingFilePath(tcModelLocation, parts[1])) {
                    parameters.add(tcModelLocation + "/" + parts[1]);
                } else {
                    parameters.add(parts[1]);
                }
            }
        }
        return parameters;
    }

    private static boolean isExistingFilePath(File tcModelLocation, String name) {

        return new File(tcModelLocation.getAbsolutePath() + "/" + name).exists();
    }

}