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diff --git a/src/main/java/org/apache/commons/math3/optimization/fitting/package-info.java b/src/main/java/org/apache/commons/math3/optimization/fitting/package-info.java
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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.
+ */
+/**
+ *
+ * This package provides classes to perform curve fitting.
+ *
+ * <p>Curve fitting is a special case of a least squares problem
+ * were the parameters are the coefficients of a function <code>f</code>
+ * whose graph <code>y=f(x)</code> should pass through sample points, and
+ * were the objective function is the squared sum of residuals
+ * <code>f(x<sub>i</sub>)-y<sub>i</sub></code> for observed points
+ * (x<sub>i</sub>, y<sub>i</sub>).</p>
+ *
+ *
+ */
+package org.apache.commons.math3.optimization.fitting;