io.improbable.keanu.vertices.generic.nonprobabilistic

Class CPTVertex<T>

java.lang.Object

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

io.improbable.keanu.vertices.generic.nonprobabilistic.NonProbabilistic<T>

io.improbable.keanu.vertices.generic.nonprobabilistic.CPTVertex<T>

All Implemented Interfaces:

Identifiable

public class CPTVertex<T>
extends NonProbabilistic<T>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CPTVertex.Condition

Field Summary

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

idGenerator

Constructor Summary

Constructors

Constructor and Description
CPTVertex(java.util.List<Vertex<java.lang.Boolean>> inputs, java.util.Map<CPTVertex.Condition,Vertex<T>> conditions, Vertex<T> defaultResult)

Method Summary

Modifier and Type	Method and Description
T	getDerivedValue()
T	lazyEval() This causes a backwards propagating calculation of the vertex value.
T	sample()

Methods inherited from class io.improbable.keanu.vertices.generic.nonprobabilistic.NonProbabilistic

dDensityAtValue, density, isProbabilistic, updateValue

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

addChild, addParent, addParents, densityAtValue, dlnDensityAtValue, equals, getChildren, getConnectedGraph, getId, getParents, getValue, hashCode, isObserved, logDensity, logDensityAtValue, observe, observeOwnValue, setAndCascade, setParents, setParents, setValue, unobserve, updateChildren

Methods inherited from class java.lang.Object

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

Constructor Detail

CPTVertex

public CPTVertex(java.util.List<Vertex<java.lang.Boolean>> inputs,
                 java.util.Map<CPTVertex.Condition,Vertex<T>> conditions,
                 Vertex<T> defaultResult)

Method Detail

sample

public T sample()

Specified by:

sample in class Vertex<T>

Returns:

a sample from the vertex's distribution. For non-probabilistic vertices, this will always be the same value.

lazyEval

public T lazyEval()

Description copied from class: Vertex

This causes a backwards propagating calculation of the vertex value. This propagation only happens for vertices with values dependent on parent values i.e. non-probabilistic vertices.

Specified by:

lazyEval in class Vertex<T>

Returns:

The value at this vertex after recalculating any parent non-probabilistic vertices.

getDerivedValue

public T getDerivedValue()

Specified by:

getDerivedValue in class NonProbabilistic<T>