com.expleague.ml.cli.modes.impl.GridSearch Maven / Gradle / Ivy
package com.expleague.ml.cli.modes.impl;
import com.expleague.ml.cli.gridsearch.ParametersExtractor;
import com.expleague.commons.io.StreamTools;
import com.expleague.commons.random.FastRandom;
import com.expleague.commons.text.StringUtils;
import com.expleague.commons.util.Pair;
import com.expleague.commons.math.Func;
import com.expleague.ml.TargetFunc;
import com.expleague.ml.cli.builders.data.DataBuilder;
import com.expleague.ml.cli.builders.data.impl.DataBuilderClassic;
import com.expleague.ml.cli.builders.data.impl.DataBuilderCrossValidation;
import com.expleague.ml.cli.builders.methods.MethodsBuilder;
import com.expleague.ml.cli.builders.methods.grid.GridBuilder;
import com.expleague.ml.cli.gridsearch.OptimumHolder;
import com.expleague.ml.cli.modes.AbstractMode;
import com.expleague.ml.cli.modes.CliPoolReaderHelper;
import com.expleague.ml.data.tools.DataTools;
import com.expleague.ml.data.tools.Pool;
import com.expleague.ml.BFGrid;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.MissingArgumentException;
import java.io.File;
import java.io.IOException;
import static com.expleague.ml.cli.JMLLCLI.*;
/**
* User: qdeee
* Date: 16.09.15
*/
public class GridSearch extends AbstractMode {
public void run(final CommandLine command) throws MissingArgumentException, IOException {
if (!command.hasOption(LEARN_OPTION)) {
throw new MissingArgumentException("Please provide 'LEARN_OPTION'");
}
if (!command.hasOption(OPTIMIZATION_OPTION)) {
throw new MissingArgumentException("Please provide 'OPTIMIZATION_OPTION'");
}
if (!command.hasOption(RANGES_OPTION)) {
throw new MissingArgumentException("Please provide 'RANGE_OPTION'");
}
//data loading
final DataBuilder dataBuilder;
if (command.hasOption(CROSS_VALIDATION_OPTION)) {
final DataBuilderCrossValidation dataBuilderCrossValidation = new DataBuilderCrossValidation();
final String[] cvOptions = StringUtils.split(command.getOptionValue(CROSS_VALIDATION_OPTION), "/", 2);
dataBuilderCrossValidation.setRandomSeed(Integer.valueOf(cvOptions[0]));
dataBuilderCrossValidation.setPartition(cvOptions[1]);
dataBuilder = dataBuilderCrossValidation;
} else {
dataBuilder = new DataBuilderClassic();
((DataBuilderClassic) dataBuilder).setTestPath(command.getOptionValue(TEST_OPTION));
}
dataBuilder.setLearnPath(command.getOptionValue(LEARN_OPTION));
CliPoolReaderHelper.setPoolReader(command, dataBuilder);
final Pair extends Pool, ? extends Pool> pools = dataBuilder.create();
final Pool learn = pools.getFirst();
final Pool test = pools.getSecond();
//loading grid (if needed)
final GridBuilder gridBuilder = new GridBuilder();
if (command.hasOption(GRID_OPTION)) {
gridBuilder.setGrid(BFGrid.CONVERTER.convertFrom(StreamTools.readFile(new File(command.getOptionValue(GRID_OPTION)))));
} else {
gridBuilder.setBinsCount(Integer.valueOf(command.getOptionValue(BIN_FOLDS_COUNT_OPTION, "32")));
gridBuilder.setDataSet(learn.vecData());
}
//choose optimization method
final MethodsBuilder methodsBuilder = new MethodsBuilder();
methodsBuilder.setRandom(new FastRandom());
methodsBuilder.setGridBuilder(gridBuilder);
//set target
final String target = command.getOptionValue(TARGET_OPTION, DEFAULT_TARGET);
final TargetFunc loss = learn.target(DataTools.targetByName(target));
//set metrics
final String[] metricNames = command.getOptionValues(METRICS_OPTION);
final Func[] metrics;
if (metricNames != null) {
metrics = new Func[metricNames.length];
for (int i = 0; i < metricNames.length; i++) {
metrics[i] = test.targetByName(metricNames[i]);
}
} else {
metrics = new Func[]{test.targetByName(target)};
}
final com.expleague.ml.cli.gridsearch.GridSearch gridSearch = new com.expleague.ml.cli.gridsearch.GridSearch(learn, test, loss, metrics, methodsBuilder);
final String commonScheme = command.getOptionValue(OPTIMIZATION_OPTION);
final String[][] parametersSpace = ParametersExtractor.parse(command.getOptionValue(RANGES_OPTION));
final OptimumHolder[] searchResult = gridSearch.search(commonScheme, parametersSpace);
for (int i = 0; i < metrics.length; i++) {
System.out.println(metrics[i].getClass().getSimpleName() + " : " + searchResult[i]);
}
}
}
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