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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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package org.apache.commons.math.optimization;
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/** This interface specifies how to check if a {@link
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* DirectSearchOptimizer direct search method} has converged.
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* <p>Deciding if convergence has been reached is a problem-dependent
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* issue. The user should provide a class implementing this interface
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* to allow the optimization algorithm to stop its search according to
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* the problem at hand.</p>
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* @version $Revision: 620312 $ $Date: 2008-02-10 12:28:59 -0700 (Sun, 10 Feb 2008) $
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public interface ConvergenceChecker {
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/** Check if the optimization algorithm has converged on the simplex.
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* @param simplex ordered simplex (all points in the simplex have
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* been eavluated and are sorted from lowest to largest cost)
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* @return true if the algorithm is considered to have converged
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public boolean converged (PointCostPair[] simplex);