Module ojalgo

Package org.ojalgo.optimisation.integer

Class IntegerSolver

java.lang.Object

org.ojalgo.optimisation.GenericSolver

org.ojalgo.optimisation.integer.IntegerSolver

All Implemented Interfaces:

Optimisation, Optimisation.Solver

public final class IntegerSolver
extends GenericSolver

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	IntegerSolver.ModelIntegration

Nested classes/interfaces inherited from class org.ojalgo.optimisation.GenericSolver

GenericSolver.Builder<B extends GenericSolver.Builder<B,S>,S extends GenericSolver>

Nested classes/interfaces inherited from interface org.ojalgo.optimisation.Optimisation

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

Field Summary

Fields

Modifier and Type	Field	Description
static final IntegerSolver.ModelIntegration	INTEGRATION

Fields inherited from class org.ojalgo.optimisation.GenericSolver

options

Method Summary

Modifier and Type	Method	Description
protected Optimisation.Result	buildResult()
protected double	evaluateFunction(Access1D<?> solution)
protected MatrixStore<Double>	extractSolution()
protected Optimisation.Result	getBestEstimate()
protected Optimisation.Result	getBestResultSoFar()
protected boolean	isIterationNecessary()
protected void	logProgress(int iterationsDone, String classSimpleName, CalendarDateDuration duration)
static IntegerSolver	make(ExpressionsBasedModel model)
protected void	markInteger(NodeKey key, Optimisation.Result result, ModelStrategy strategy)
static IntegerSolver	newSolver(ExpressionsBasedModel model)
Optimisation.Result	solve(Optimisation.Result kickStarter)
String	toString()
protected boolean	validate()	Should validate the solver data/input/structue.

Methods inherited from class org.ojalgo.optimisation.GenericSolver

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.ojalgo.optimisation.Optimisation.Solver

dispose, solve

Field Details

INTEGRATION

public static final IntegerSolver.ModelIntegration INTEGRATION

Method Details

make

public static IntegerSolver make(ExpressionsBasedModel model)

newSolver

public static IntegerSolver newSolver(ExpressionsBasedModel model)

solve

public Optimisation.Result solve(Optimisation.Result kickStarter)

toString

public String toString()

Overrides:

toString in class Object

buildResult

protected Optimisation.Result buildResult()

evaluateFunction

protected double evaluateFunction(Access1D<?> solution)

extractSolution

protected MatrixStore<Double> extractSolution()

getBestEstimate

protected Optimisation.Result getBestEstimate()

getBestResultSoFar

protected Optimisation.Result getBestResultSoFar()

isIterationNecessary

protected boolean isIterationNecessary()

logProgress

protected void logProgress(int iterationsDone,
 String classSimpleName,
 CalendarDateDuration duration)

Overrides:

logProgress in class GenericSolver

markInteger

protected void markInteger(NodeKey key,
 Optimisation.Result result,
 ModelStrategy strategy)

validate

protected boolean validate()

Should validate the solver data/input/structue. Even "expensive" validation can be performed as the method should only be called if Optimisation.Options.validate is set to true. In addition to returning true or false the implementation should set the state to either Optimisation.State.VALID or Optimisation.State.INVALID (or possibly Optimisation.State.FAILED). Typically the method should be called at the very beginning of the solve-method.

Returns:

Is the solver instance valid?