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 */
017package org.apache.commons.math3.fitting.leastsquares;
018
019import org.apache.commons.math3.linear.RealVector;
020
021/**
022 * Interface for validating a set of model parameters.
023 *
024 * @since 3.4
025 */
026public interface ParameterValidator {
027    /**
028     * Validates the set of parameters.
029     *
030     * @param params Input parameters.
031     * @return the validated values.
032     */
033    RealVector validate(RealVector params);
034}