Class PrimalSimplexSolver

java.lang.Object

org.ojalgo.optimisation.GenericSolver

org.ojalgo.optimisation.linear.LinearSolver

org.ojalgo.optimisation.linear.SimplexSolver

org.ojalgo.optimisation.linear.PrimalSimplexSolver

All Implemented Interfaces:

Optimisation, Optimisation.Solver, UpdatableSolver

final class PrimalSimplexSolver
extends SimplexSolver

Requires the initial basis to be feasible (doesn't do a phase-1).

Nested Class Summary

Nested classes/interfaces inherited from class SimplexSolver

SimplexSolver.Direction, SimplexSolver.EnterInfo, SimplexSolver.ExitInfo, SimplexSolver.IterDescr

Nested classes/interfaces inherited from class LinearSolver

LinearSolver.Builder, LinearSolver.Configuration, LinearSolver.ModelIntegration, LinearSolver.NewIntegration, LinearSolver.OldIntegration

Nested classes/interfaces inherited from interface Optimisation

Optimisation.Constraint, Optimisation.ConstraintType, Optimisation.Integration<M,S>, Optimisation.Model, Optimisation.Objective, Optimisation.Options, Optimisation.ProblemStructure, Optimisation.Result, Optimisation.Sense, Optimisation.Solver, Optimisation.State

Field Summary

Fields inherited from class LinearSolver

INTEGRATION, NEWER_DUAL_SOLVER, OLDER_PRIMAL_SOLVER

Fields inherited from class GenericSolver

options

Constructor Summary

Constructors

Constructor	Description
PrimalSimplexSolver(Optimisation.Options solverOptions, SimplexStore simplexStore)

Method Summary

Modifier and Type	Method	Description
(package private) void	setup(SimplexStore simplex)	Determine if non-basic variables are at their lower or upper bound (or if they are unbounded) Shift ranges/bounds so that (one of) the bound(s) is at zero Assumes that the ranges/bounds of basic variables are already defined this way.
Optimisation.Result	solve(Optimisation.Result kickStarter)

Methods inherited from class SimplexSolver

basis, build, doDualIterations, doPrimalIterations, doSolveConvexAsDual, doSolveConvexAsPrimal, extractResult, fixVariable, generateCutCandidates, getEntityMap, isDualFeasible, isPrimalFeasible, prepareToIterate, shift, sizeOfDual, sizeOfPrimal, switchToPhase2, updateRange

Methods inherited from class LinearSolver

newBuilder, newBuilder, newGeneralBuilder, newGeneralBuilder, newSolver, newStandardBuilder, newStandardBuilder, solve, toObjectiveFunction

Methods inherited from class GenericSolver

countIterations, countTime, error, getClassSimpleName, getDuration, getState, incrementIterationsCount, isIterationAllowed, isLogDebug, isLogOff, isLogProgress, log, log, log, log, logProgress, printf, resetIterationsCount, setState, setValidator, validate, validate

Methods inherited from class Object

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

Methods inherited from interface Optimisation.Solver

dispose, solve

Methods inherited from interface UpdatableSolver

integers, isMapped

Constructor Details

PrimalSimplexSolver

PrimalSimplexSolver(Optimisation.Options solverOptions,
 SimplexStore simplexStore)

Method Details

solve

public Optimisation.Result solve(Optimisation.Result kickStarter)

setup

void setup(SimplexStore simplex)

Description copied from class: SimplexSolver

• Determine if non-basic variables are at their lower or upper bound (or if they are unbounded)
• Shift ranges/bounds so that (one of) the bound(s) is at zero
• Assumes that the ranges/bounds of basic variables are already defined this way.

Specified by:

setup in class SimplexSolver