diviner
Class PIDiviner

java.lang.Object
  function.BasicScalarFunction
      function.VariableDomainScalarFunction
          diviner.BasicBoundConstrainedDiviner
              diviner.ImprovementDiviner
                  diviner.PIDiviner

All Implemented Interfaces:

BoundConstrainedDiviner, Computable, ScalarFunction, VariableBounds, VariableInputDimension

public class PIDiviner
extends ImprovementDiviner

Implements a diviner based on probability of improvement. This implementation treats its ApproxModel as if it were a Gaussian Process regression.

Author:

dgorur

Field Summary

Fields inherited from class diviner.ImprovementDiviner

improvement, postMean, postStdDev, scaledImprovement

Fields inherited from class function.BasicScalarFunction

DEFAULT_BOUNDS, DEFAULT_DIM, VALUE_OUTSIDE_BOUNDS

Constructor Summary

PIDiviner()

Method Summary

double	getTargetImprovement() Returns the target improvement.
double	quickCompute(double[] x) Compute method without dimension checking.
void	setTargetImprovement(double targetImprovement) Sets the target improvement.
void	setTargetObjective(double obj) Sets the value of the target objective desired.

Methods inherited from class diviner.ImprovementDiviner

evaluatePosterior, getTargetObjective

Methods inherited from class diviner.BasicBoundConstrainedDiviner

getObjectiveModel, init, setObjectiveModel

Methods inherited from class function.VariableDomainScalarFunction

getBounds, getInputDimension, setBounds, setInputDimension

Methods inherited from class function.BasicScalarFunction

checkDimensions, compute, compute, compute, compute, compute, compute, getOutputDimension, isWithinBounds, makeBounds, quickCompute

Methods inherited from class java.lang.Object

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

Methods inherited from interface function.VariableBounds

setBounds

Methods inherited from interface function.ScalarFunction

compute, compute, compute, compute, quickCompute

Methods inherited from interface function.Computable

compute, compute, getBounds, getInputDimension, getOutputDimension, isWithinBounds

Constructor Detail

PIDiviner

public PIDiviner()

Method Detail

getTargetImprovement

public double getTargetImprovement()

Returns the target improvement.

Returns:

the target improvement.

quickCompute

public double quickCompute(double[] x)

Description copied from class: BasicScalarFunction

Compute method without dimension checking. All subclasses must implement this method: it is the core method that defines the function.

Specified by:

quickCompute in interface ScalarFunction

Specified by:

quickCompute in class BasicScalarFunction

Parameters:

x - the given input.

Returns:

the output corresponding to the given input.

setTargetImprovement

public void setTargetImprovement(double targetImprovement)

Sets the target improvement.

Parameters:

targetImprovement - the given target improvement.

setTargetObjective

public void setTargetObjective(double obj)

Description copied from class: ImprovementDiviner

Sets the value of the target objective desired.

Overrides:

setTargetObjective in class ImprovementDiviner

Parameters:

obj - desired value of objective.