

Java example source code file (LinearOptimizer.java)
The LinearOptimizer.java Java example source code/* * 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/LICENSE2.0 * * 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.linear; import java.util.Collection; import org.apache.commons.math3.exception.MathIllegalStateException; import org.apache.commons.math3.optimization.GoalType; import org.apache.commons.math3.optimization.PointValuePair; /** * This interface represents an optimization algorithm for linear problems. * <p>Optimization algorithms find the input point set that either {@link GoalType * maximize or minimize} an objective function. In the linear case the form of * the function is restricted to * <pre> * c<sub>1x_{1} + ... c_{n}x_{n} = v * </pre> * and there may be linear constraints too, of one of the forms: * <ul> * <li>c_{1}x_{1} + ... c_{n}x_{n} = v * <li>c_{1}x_{1} + ... c_{n}x_{n} <= v * <li>c_{1}x_{1} + ... c_{n}x_{n} >= v * <li>l_{1}x_{1} + ... l_{n}x_{n} + l_{cst} = * r<sub>1x_{1} + ... r_{n}x_{n} + r_{cst} * <li>l_{1}x_{1} + ... l_{n}x_{n} + l_{cst} <= * r<sub>1x_{1} + ... r_{n}x_{n} + r_{cst} * <li>l_{1}x_{1} + ... l_{n}x_{n} + l_{cst} >= * r<sub>1x_{1} + ... r_{n}x_{n} + r_{cst} * </ul> * where the c<sub>i, l_{i} or r_{i} are the coefficients of * the constraints, the x<sub>i are the coordinates of the current point and * v is the value of the constraint. * </p> * @deprecated As of 3.1 (to be removed in 4.0). * @since 2.0 */ @Deprecated public interface LinearOptimizer { /** * Set the maximal number of iterations of the algorithm. * @param maxIterations maximal number of function calls */ void setMaxIterations(int maxIterations); /** * Get the maximal number of iterations of the algorithm. * @return maximal number of iterations */ int getMaxIterations(); /** * Get the number of iterations realized by the algorithm. * <p> * The number of evaluations corresponds to the last call to the * {@link #optimize(LinearObjectiveFunction, Collection, GoalType, boolean) optimize} * method. It is 0 if the method has not been called yet. * </p> * @return number of iterations */ int getIterations(); /** * Optimizes an objective function. * @param f linear objective function * @param constraints linear constraints * @param goalType type of optimization goal: either {@link GoalType#MAXIMIZE} or {@link GoalType#MINIMIZE} * @param restrictToNonNegative whether to restrict the variables to nonnegative values * @return point/value pair giving the optimal value for objective function * @exception MathIllegalStateException if no solution fulfilling the constraints * can be found in the allowed number of iterations */ PointValuePair optimize(LinearObjectiveFunction f, Collection<LinearConstraint> constraints, GoalType goalType, boolean restrictToNonNegative) throws MathIllegalStateException; } Other Java examples (source code examples)Here is a short list of links related to this Java LinearOptimizer.java source code file: 
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