burlap.behavior.functionapproximation.dense

Class ConcatenatedObjectFeatures

java.lang.Object

burlap.behavior.functionapproximation.dense.ConcatenatedObjectFeatures

All Implemented Interfaces:

DenseStateFeatures

public class ConcatenatedObjectFeatures
extends java.lang.Object
implements DenseStateFeatures

This class is used to produce a state feature vector from an OOState by iterating over the objects, generating a double array for each object, and concatenating the reslting vectors into one vector. You specify the ordering of the vectorization by specifying the order of the OO-MDP object classes, and which DenseStateFeatures to use for objects of their class. If multiple objects of a class exist, then they will be unpacked in the order defined by the OOState.

Author:

James MacGlashan

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<java.lang.String>	objectClassOrder The order of object classes to follow when concatenating objects into a single state feature vector.
protected java.util.Map<java.lang.String,DenseStateFeatures>	objectVectorGenerators The DenseStateFeatures to use for each object class

Constructor Summary

Constructors

Constructor and Description
ConcatenatedObjectFeatures()
ConcatenatedObjectFeatures(java.util.List<java.lang.String> objectClassOrder, java.util.Map<java.lang.String,DenseStateFeatures> objectVectorGenerators)

Method Summary

Modifier and Type	Method and Description
ConcatenatedObjectFeatures	addObjectVectorizion(java.lang.String className, DenseStateFeatures objectVectorization) Adds an OO-MDP class next in the list of object classes to vectorize with the given DenseStateFeatures.
ConcatenatedObjectFeatures	copy() Returns a copy of this DenseStateFeatures
double[]	features(State s) Returns a feature vector represented as a double array for a given input state.

Methods inherited from class java.lang.Object

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

Field Detail

objectClassOrder

protected java.util.List<java.lang.String> objectClassOrder

The order of object classes to follow when concatenating objects into a single state feature vector.

objectVectorGenerators

protected java.util.Map<java.lang.String,DenseStateFeatures> objectVectorGenerators

The DenseStateFeatures to use for each object class

Constructor Detail

ConcatenatedObjectFeatures

public ConcatenatedObjectFeatures()

ConcatenatedObjectFeatures

public ConcatenatedObjectFeatures(java.util.List<java.lang.String> objectClassOrder,
                                  java.util.Map<java.lang.String,DenseStateFeatures> objectVectorGenerators)

Method Detail

addObjectVectorizion

public ConcatenatedObjectFeatures addObjectVectorizion(java.lang.String className,
                                                       DenseStateFeatures objectVectorization)

Adds an OO-MDP class next in the list of object classes to vectorize with the given DenseStateFeatures.

Parameters:

className - the name of the OO-MDP object class

objectVectorization - the DenseStateFeatures to use for objects of this class

Returns:

this object, so that a builder paradigm can be used

features

public double[] features(State s)

Description copied from interface: DenseStateFeatures

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

Specified by:

features in interface DenseStateFeatures

Parameters:

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

Returns:

the feature vector represented as a double array.

copy

public ConcatenatedObjectFeatures copy()

Description copied from interface: DenseStateFeatures

Returns a copy of this DenseStateFeatures

Specified by:

copy in interface DenseStateFeatures

Returns:

a copy of this DenseStateFeatures