burlap.behavior.singleagent.vfa.common

Class FDFeatureVectorGenerator

java.lang.Object

burlap.behavior.singleagent.vfa.common.FDFeatureVectorGenerator

All Implemented Interfaces:

StateToFeatureVectorGenerator

public class FDFeatureVectorGenerator
extends java.lang.Object
implements StateToFeatureVectorGenerator

A wrapper for turning the features from a FeatureDatabase into a double array. Note that this wrapper is not advised for feature databases like CMACs/Tile coding, since those have very large numbers of sparse features and this wrapper will create entries for all features, including the zero-valued ones.

Author:

James MacGlashan.

Field Summary

Fields

Modifier and Type	Field and Description
protected FeatureDatabase	fd

Constructor Summary

Constructors

Constructor and Description
FDFeatureVectorGenerator(FeatureDatabase fd) Initializes.

Method Summary

Methods

Modifier and Type	Method and Description
double[]	generateFeatureVectorFrom(State s) Returns a feature vector represented as a double array for a given input state.
FeatureDatabase	getFd()
void	setFd(FeatureDatabase fd)

Methods inherited from class java.lang.Object

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

Field Detail

fd

protected FeatureDatabase fd

Constructor Detail

FDFeatureVectorGenerator

public FDFeatureVectorGenerator(FeatureDatabase fd)

Initializes.

Parameters:

fd - the feature database used for generating state features.

Method Detail

getFd

public FeatureDatabase getFd()

setFd

public void setFd(FeatureDatabase fd)

generateFeatureVectorFrom

public double[] generateFeatureVectorFrom(State s)

Description copied from interface: StateToFeatureVectorGenerator

Returns a feature vector represented as a double array for a given input state.

Specified by:

generateFeatureVectorFrom in interface StateToFeatureVectorGenerator

Parameters:

s - the input state to turn into a feature vector.

Returns:

the feature vector represented as a double array.