uk.ac.ed.inf.ace.tasks.MultiClassTask.java Source code

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Here is the source code for uk.ac.ed.inf.ace.tasks.MultiClassTask.java

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/*
 * Copyright 2012 Daniel Renshaw <d.renshaw@sms.ed.ac.uk>.
 *
 * 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 uk.ac.ed.inf.ace.tasks;

import com.google.common.base.Function;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Lists;
import java.io.File;
import java.util.Set;
import uk.ac.ed.inf.ace.*;

/**
 * @author "Daniel Renshaw" <d.renshaw@sms.ed.ac.uk>
 */
public abstract class MultiClassTask<E extends Engine<?, ?>, C extends uk.ac.ed.inf.ace.config.v1.MultiClassTaskBase>
        extends TaskBase<E, C> {

    private final Set<Object> labels;
    private final Function<String, Object> parseConfigLabel;

    protected MultiClassTask(E engine, C config, Function<String, Object> parseConfigLabel) {
        super(engine, config);
        this.parseConfigLabel = parseConfigLabel;
        this.labels = ImmutableSet.<Object>copyOf(Lists.transform(config.getLabels(), parseConfigLabel));
    }

    @Override
    public Object parseLabel(String label) {
        return parseConfigLabel.apply(label);
    }

    @Override
    public Set<Object> getLabels() {
        return labels;
    }

    @Override
    public Object label(ReadableDocument document) {
        return document.getProperties().get(getLabelPropertyKey());
    }

    @Override
    public Evaluator createEvaluator(Experiment experiment) {
        return new MultiClassEvaluator(experiment);
    }

    @Override
    public Evaluator readEvaluator(Experiment experiment, File file) throws Exception {
        return MultiClassEvaluator.read(experiment, file);
    }

    @Override
    public Iterable<Object> getTargetLabels() {
        return labels;
    }
}