core.optimization.ucbOptimization

Class UCBOptimization

java.lang.Object

core.optimization.ucbOptimization.UCBOptimization

All Implemented Interfaces:

OptimizationObjective

public class UCBOptimization
extends java.lang.Object
implements OptimizationObjective

an implementation of optimization objective for any UCBEquation

Author:

AhmedKhalifa

Field Summary

Fields

Modifier and Type	Field and Description
static int	RANDOM_OBJ this is a unified random object to be used
static double	SCORE_WIN Weights for Score wrt to Wins in the optimization problem
static double	SIGMOID_SHIFT sigmoid shift for negative scores
static double	SIGMOID_WIDTH sigmoid width for score

Constructor Summary

Constructors

Constructor and Description
UCBOptimization(java.lang.String[] gamePaths, java.lang.String[] levelPaths, int repetition, int evaluation, UCBEquation ucb) Constructor for the current ucb optimization objective

Method Summary

Modifier and Type	Method and Description
double[]	evaluate(double[] parameters) evaluate the current parameters against the target objectives
int	getNumberOfObjectives() get the number of parameters used in this equation
int	getNumberOfParameters() small value to avoid division by zero

Methods inherited from class java.lang.Object

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

Field Detail

SCORE_WIN

public static double SCORE_WIN

Weights for Score wrt to Wins in the optimization problem

SIGMOID_WIDTH

public static double SIGMOID_WIDTH

sigmoid width for score

SIGMOID_SHIFT

public static double SIGMOID_SHIFT

sigmoid shift for negative scores

RANDOM_OBJ

public static int RANDOM_OBJ

this is a unified random object to be used

Constructor Detail

UCBOptimization

public UCBOptimization(java.lang.String[] gamePaths,
                       java.lang.String[] levelPaths,
                       int repetition,
                       int evaluation,
                       UCBEquation ucb)

Constructor for the current ucb optimization objective

Parameters:

gamePaths - all game paths require to test against

levelPaths - all level paths associated with the games

repetition - number of repetition to play each game

evaluation - the maximum number of calls allowed for the evaluation function

ucb - the current ucb equation to optimize

Method Detail

getNumberOfParameters

public int getNumberOfParameters()

small value to avoid division by zero

Specified by:

getNumberOfParameters in interface OptimizationObjective

Returns:

number of optimization parameters

getNumberOfObjectives

public int getNumberOfObjectives()

get the number of parameters used in this equation

Specified by:

getNumberOfObjectives in interface OptimizationObjective

Returns:

number of ucb parameters (14)

evaluate

public double[] evaluate(double[] parameters)

evaluate the current parameters against the target objectives

Specified by:

evaluate in interface OptimizationObjective

Parameters:

parameters - the current set of parameters to test

Returns:

array of fitness against all objectives (the higher the better), null if you exceed the number of allowed evaluations