io.improbable.keanu.vertices

Class DiscreteVertex<T extends Tensor>

java.lang.Object

io.improbable.keanu.vertices.Vertex<T>

io.improbable.keanu.vertices.DiscreteVertex<T>

Direct Known Subclasses:

BoolVertex, IntegerVertex

public abstract class DiscreteVertex<T extends Tensor>
extends Vertex<T>

Field Summary

Fields inherited from class io.improbable.keanu.vertices.Vertex

ID_GENERATOR

Constructor Summary

Constructors

Constructor and Description
DiscreteVertex()

Method Summary

Modifier and Type	Method and Description
abstract java.util.Map<java.lang.Long,DoubleTensor>	dLogPmf(T value)
java.util.Map<java.lang.Long,DoubleTensor>	dLogProb(T value) The partial derivatives of the natural log prob.
abstract double	logPmf(T value)
double	logProb(T value) This is the natural log of the probability at the supplied value.

Methods inherited from class io.improbable.keanu.vertices.Vertex

addChild, addParent, addParents, dLogProbAtValue, equals, exploreSetting, getChildren, getConnectedGraph, getId, getParents, getRawValue, getShape, getValue, hashCode, hasValue, isObserved, isProbabilistic, lazyEval, logProbAtValue, observe, observeOwnValue, sample, sampleUsingDefaultRandom, setAndCascade, setAndCascade, setParents, setParents, setValue, unobserve, updateValue

Methods inherited from class java.lang.Object

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

Constructor Detail

DiscreteVertex

public DiscreteVertex()

Method Detail

logProb

public final double logProb(T value)

Description copied from class: Vertex

This is the natural log of the probability at the supplied value. In the case of continuous vertices, this is actually the log of the density, which will differ from the probability by a constant.

Specified by:

logProb in class Vertex<T extends Tensor>

Parameters:

value - The supplied value.

Returns:

The natural log of the probability density at the supplied value

dLogProb

public final java.util.Map<java.lang.Long,DoubleTensor> dLogProb(T value)

Description copied from class: Vertex

The partial derivatives of the natural log prob.

Specified by:

dLogProb in class Vertex<T extends Tensor>

Parameters:

value - at a given value

Returns:

the partial derivatives of the log density

logPmf

public abstract double logPmf(T value)

dLogPmf

public abstract java.util.Map<java.lang.Long,DoubleTensor> dLogPmf(T value)