com.insightml.evaluation.functions.AbstractIndependentLabelsObjectiveFunction.java Source code

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Here is the source code for com.insightml.evaluation.functions.AbstractIndependentLabelsObjectiveFunction.java

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/*
 * Copyright (C) 2016 Stefan Hen
 *
 * 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 com.insightml.evaluation.functions;

import java.util.List;

import org.apache.commons.math3.stat.descriptive.DescriptiveStatistics;

import com.insightml.data.samples.Sample;
import com.insightml.models.Predictions;

public abstract class AbstractIndependentLabelsObjectiveFunction<E, T> extends AbstractObjectiveFunction<E, T> {

    private static final long serialVersionUID = 2875681349138131200L;

    @Override
    public final DescriptiveStatistics acrossLabels(
            final List<? extends Predictions<? extends E, ? extends T>>[] predictions) {
        final DescriptiveStatistics stats = new DescriptiveStatistics();
        for (final List<? extends Predictions<? extends E, ? extends T>> predz : predictions) {
            for (final Predictions<? extends E, ? extends T> preds : predz) {
                for (final double val : label(preds.getPredictions(), preds.getExpected(), preds.getWeights(),
                        preds.getSamples(), preds.getLabelIndex()).getValues()) {
                    stats.addValue(val);
                }
            }
        }
        return stats;
    }

    @Override
    public final double instance(final T pred, final E exp, final Sample sample) {
        throw new IllegalAccessError();
    }

}