org.apache.commons.math3.optimization.linear
Class SimplexSolver

java.lang.Object
  org.apache.commons.math3.optimization.linear.AbstractLinearOptimizer
      org.apache.commons.math3.optimization.linear.SimplexSolver

All Implemented Interfaces:

LinearOptimizer

Deprecated. As of 3.1 (to be removed in 4.0).

@Deprecated
public class SimplexSolver
extends AbstractLinearOptimizer

Solves a linear problem using the Two-Phase Simplex Method.

Since:

2.0

Version:

$Id: SimplexSolver.java 7721 2013-02-14 14:07:13Z CardosoP $

Field Summary

Fields inherited from class org.apache.commons.math3.optimization.linear.AbstractLinearOptimizer

DEFAULT_MAX_ITERATIONS

Constructor Summary

SimplexSolver()
Deprecated. Build a simplex solver with default settings.

SimplexSolver(double epsilon, int maxUlps)
Deprecated. Build a simplex solver with a specified accepted amount of error

Method Summary

protected void	doIteration(org.apache.commons.math3.optimization.linear.SimplexTableau tableau) Deprecated. Runs one iteration of the Simplex method on the given model.
PointValuePair	doOptimize() Deprecated. Perform the bulk of optimization algorithm.
protected void	solvePhase1(org.apache.commons.math3.optimization.linear.SimplexTableau tableau) Deprecated. Solves Phase 1 of the Simplex method.

Methods inherited from class org.apache.commons.math3.optimization.linear.AbstractLinearOptimizer

getConstraints, getFunction, getGoalType, getIterations, getMaxIterations, incrementIterationsCounter, optimize, restrictToNonNegative, setMaxIterations

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SimplexSolver

public SimplexSolver()

Deprecated.

Build a simplex solver with default settings.

SimplexSolver

public SimplexSolver(double epsilon,
                     int maxUlps)

Deprecated.

Build a simplex solver with a specified accepted amount of error

Parameters:

epsilon - the amount of error to accept for algorithm convergence

maxUlps - amount of error to accept in floating point comparisons

Method Detail

doIteration

protected void doIteration(org.apache.commons.math3.optimization.linear.SimplexTableau tableau)
                    throws MaxCountExceededException,
                           UnboundedSolutionException

Deprecated.

Runs one iteration of the Simplex method on the given model.

Parameters:

tableau - simple tableau for the problem

Throws:

MaxCountExceededException - if the maximal iteration count has been exceeded

UnboundedSolutionException - if the model is found not to have a bounded solution

solvePhase1

protected void solvePhase1(org.apache.commons.math3.optimization.linear.SimplexTableau tableau)
                    throws MaxCountExceededException,
                           UnboundedSolutionException,
                           NoFeasibleSolutionException

Deprecated.

Solves Phase 1 of the Simplex method.

Parameters:

tableau - simple tableau for the problem

Throws:

MaxCountExceededException - if the maximal iteration count has been exceeded

UnboundedSolutionException - if the model is found not to have a bounded solution

NoFeasibleSolutionException - if there is no feasible solution

doOptimize

public PointValuePair doOptimize()
                          throws MaxCountExceededException,
                                 UnboundedSolutionException,
                                 NoFeasibleSolutionException

Deprecated.

Perform the bulk of optimization algorithm.

Specified by:

doOptimize in class AbstractLinearOptimizer

Returns:

the point/value pair giving the optimal value for objective function

Throws:

MaxCountExceededException

UnboundedSolutionException

NoFeasibleSolutionException