org.moeaframework.problem
Class TimingProblem

java.lang.Object
  org.moeaframework.problem.TimingProblem

All Implemented Interfaces:

Problem

public class TimingProblem
extends Object
implements Problem

Decorates a problem to collect objective function evaluation timing data. Precision and accuracy of the timing data is dependent on System.nanoTime().

Constructor Summary

TimingProblem(Problem problem)
Decorates the specified problem to collecting objective function evaluation timing data.

Method Summary

void	clear() Clears any timing data collected.
void	close() Closes any underlying resources used by this problem.
void	evaluate(Solution solution) Evaluates the solution, updating the solution's objectives in place.
String	getName() Returns the user-friendly name for this problem.
int	getNumberOfConstraints() Returns the number of constraints defined by this problem.
int	getNumberOfObjectives() Returns the number of objectives defined by this problem.
int	getNumberOfVariables() Returns the number of decision variables defined by this problem.
double	getTime() Returns the time, in seconds, expended on objective function evaluation.
Solution	newSolution() Returns a new solution for this problem.

Methods inherited from class java.lang.Object

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

Constructor Detail

TimingProblem

public TimingProblem(Problem problem)

Decorates the specified problem to collecting objective function evaluation timing data.

Parameters:

problem - the problem to decorate

Method Detail

getName

public String getName()

Description copied from interface: Problem

Returns the user-friendly name for this problem.

Specified by:

getName in interface Problem

Returns:

the user-friendly name for this problem

getNumberOfVariables

public int getNumberOfVariables()

Description copied from interface: Problem

Returns the number of decision variables defined by this problem.

Specified by:

getNumberOfVariables in interface Problem

Returns:

the number of decision variables defined by this problem

getNumberOfObjectives

public int getNumberOfObjectives()

Description copied from interface: Problem

Returns the number of objectives defined by this problem.

Specified by:

getNumberOfObjectives in interface Problem

Returns:

the number of objectives defined by this problem

getNumberOfConstraints

public int getNumberOfConstraints()

Description copied from interface: Problem

Returns the number of constraints defined by this problem.

Specified by:

getNumberOfConstraints in interface Problem

Returns:

the number of constraints defined by this problem

evaluate

public void evaluate(Solution solution)

Description copied from interface: Problem

Evaluates the solution, updating the solution's objectives in place. Algorithms must explicitly call this method when appropriate to evaluate new solutions or reevaluate modified solutions.

Specified by:

evaluate in interface Problem

Parameters:

solution - the solution to be evaluated

newSolution

public Solution newSolution()

Description copied from interface: Problem

Returns a new solution for this problem. Implementations must initialize the variables so that the valid range of values is defined, but may leave the actual value at a default or undefined state.

Specified by:

newSolution in interface Problem

Returns:

a new solution for this problem

clear

public void clear()

Clears any timing data collected.

getTime

public double getTime()

Returns the time, in seconds, expended on objective function evaluation.

Returns:

the time, in seconds, expended on objective function evaluation

close

public void close()

Description copied from interface: Problem

Closes any underlying resources used by this problem. Once closed, further invocations of any methods on this problem may throw exceptions.

Specified by:

close in interface Problem