org.jpmml.evaluator.ClassificationAggregator.java Source code

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Here is the source code for org.jpmml.evaluator.ClassificationAggregator.java

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/*
 * Copyright (c) 2015 Villu Ruusmann
 *
 * This file is part of JPMML-Evaluator
 *
 * JPMML-Evaluator is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JPMML-Evaluator is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with JPMML-Evaluator.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.jpmml.evaluator;

import java.util.LinkedHashMap;
import java.util.Map;

import com.google.common.base.Function;
import com.google.common.collect.Maps;

abstract public class ClassificationAggregator<K> {

    private Map<K, DoubleVector> map = new LinkedHashMap<>();

    private int capacity = 0;

    public ClassificationAggregator(int capacity) {
        this.capacity = capacity;
    }

    public int size() {
        return this.map.size();
    }

    public void add(K key, double value) {
        DoubleVector values = this.map.get(key);

        if (values == null) {
            values = new DoubleVector(this.capacity);

            this.map.put(key, values);
        }

        values.add(value);
    }

    public void clear() {
        this.map.clear();
    }

    protected DoubleVector get(K key) {
        return this.map.get(key);
    }

    protected <V> Map<K, V> transform(Function<DoubleVector, V> function) {
        return Maps.transformValues(this.map, function);
    }
}