From 4fe86d82eb16f68d31907bfd5a0f685a016d476c Mon Sep 17 00:00:00 2001
From: Gilles Sadowski <erans@apache.org>
Date: Fri, 26 Oct 2012 18:27:34 +0000
Subject: [PATCH] MATH-874 I forgot to "svn add" classes (in revision 1402607).

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1402611 13f79535-47bb-0310-9956-ffa450edef68
---
 .../commons/math3/optimization/Target.java    | 49 +++++++++++++
 .../commons/math3/optimization/Weight.java    | 71 +++++++++++++++++++
 2 files changed, 120 insertions(+)
 create mode 100644 src/main/java/org/apache/commons/math3/optimization/Target.java
 create mode 100644 src/main/java/org/apache/commons/math3/optimization/Weight.java

diff --git a/src/main/java/org/apache/commons/math3/optimization/Target.java b/src/main/java/org/apache/commons/math3/optimization/Target.java
new file mode 100644
index 000000000..530ad53e3
--- /dev/null
+++ b/src/main/java/org/apache/commons/math3/optimization/Target.java
@@ -0,0 +1,49 @@
+/*
+ * 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.
+ * <br/>
+ * Immutable class.
+ *
+ * @version $Id$
+ * @since 3.1
+ */
+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();
+    }
+}
diff --git a/src/main/java/org/apache/commons/math3/optimization/Weight.java b/src/main/java/org/apache/commons/math3/optimization/Weight.java
new file mode 100644
index 000000000..c5263e68e
--- /dev/null
+++ b/src/main/java/org/apache/commons/math3/optimization/Weight.java
@@ -0,0 +1,71 @@
+/*
+ * 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;
+
+import org.apache.commons.math3.linear.RealMatrix;
+import org.apache.commons.math3.linear.Array2DRowRealMatrix;
+import org.apache.commons.math3.linear.NonSquareMatrixException;
+
+/**
+ * Weight matrix of the residuals between model and observations.
+ * <br/>
+ * Immutable class.
+ *
+ * @version $Id$
+ * @since 3.1
+ */
+public class Weight implements OptimizationData {
+    /** Weight matrix. */
+    private final RealMatrix weightMatrix;
+
+    /**
+     * Creates a diagonal weight matrix.
+     *
+     * @param weight List of the values of the diagonal.
+     */
+    public Weight(double[] weight) {
+        final int dim = weight.length;
+        weightMatrix = new Array2DRowRealMatrix(dim, dim);
+        for (int i = 0; i < dim; i++) {
+            weightMatrix.setEntry(i, i, weight[i]);
+        }
+    }
+
+    /**
+     * @param weight Weight matrix.
+     * @throws NonSquareMatrixException if the argument is not
+     * a square matrix.
+     */
+    public Weight(RealMatrix weight) {
+        if (weight.getColumnDimension() != weight.getRowDimension()) {
+            throw new NonSquareMatrixException(weight.getColumnDimension(),
+                                               weight.getRowDimension());
+        }
+
+        weightMatrix = weight.copy();
+    }
+
+    /**
+     * Gets the initial guess.
+     *
+     * @return the initial guess.
+     */
+    public RealMatrix getWeight() {
+        return weightMatrix.copy();
+    }
+}