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A Java's Collaborative Filtering library to carry out experiments in research of Collaborative Filtering based Recommender Systems. The library has been designed from researchers to researchers.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.commons.math3.optimization;

/**
 * Target of the optimization procedure.
 * They are the values which the objective vector function must reproduce
 * When the parameters of the model have been optimized.
 * 

 * Immutable class.
 *
 * @deprecated As of 3.1 (to be removed in 4.0).
 * @since 3.1
 */
@Deprecated
public class Target implements OptimizationData {
    /** Target values (of the objective vector function). */
    private final double[] target;

    /**
     * @param observations Target values.
     */
    public Target(double[] observations) {
        target = observations.clone();
    }

    /**
     * Gets the initial guess.
     *
     * @return the initial guess.
     */
    public double[] getTarget() {
        return target.clone();
    }
}