001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.commons.math3.optim.nonlinear.vector;
018
019 import org.apache.commons.math3.optim.OptimizationData;
020
021 /**
022 * Target of the optimization procedure.
023 * They are the values which the objective vector function must reproduce
024 * When the parameters of the model have been optimized.
025 * <br/>
026 * Immutable class.
027 *
028 * @version $Id: Target.java 1416643 2012-12-03 19:37:14Z tn $
029 * @since 3.1
030 */
031 public class Target implements OptimizationData {
032 /** Target values (of the objective vector function). */
033 private final double[] target;
034
035 /**
036 * @param observations Target values.
037 */
038 public Target(double[] observations) {
039 target = observations.clone();
040 }
041
042 /**
043 * Gets the initial guess.
044 *
045 * @return the initial guess.
046 */
047 public double[] getTarget() {
048 return target.clone();
049 }
050 }