Class ExitingVariableOp

Provides outgoing messages for ExitingVariable<T>(T, out T), given random arguments to the function.

Inheritance
Object
ExitingVariableOp
Inherited Members
Namespace: Microsoft.ML.Probabilistic.Factors
Assembly: Microsoft.ML.Probabilistic.dll
Syntax
[FactorMethod(typeof(Gate), "ExitingVariable<>", new Type[]{})]
[Quality(QualityBand.Mature)]
public static class ExitingVariableOp
Remarks

This factor is like ReplicateWithMarginal<T>(T, Int32, out T) except Uses[0] plays the role of Def, and Def is considered a Use. Needed only when a variable exits a gate in VMP.

Methods

AverageLogFactor()

Evidence message for VMP.

Declaration
public static double AverageLogFactor()
Returns
Type Description
Double

Zero.
Remarks

The formula for the result is log(factor(Use,Def,Marginal)). Adding up these values across all factors and variables gives the log-evidence estimate for VMP.

DefAverageLogarithm<T>(T)

VMP message to Def.

Declaration
public static T DefAverageLogarithm<T>(T Use)
Parameters
Type Name Description
T Use

Incoming message from Use.
Returns
Type Description
T

The outgoing VMP message to the Def argument.
Type Parameters
Name Description
T

The type of the messages.
Remarks

The outgoing message is the factor viewed as a function of Def with Use integrated out. The formula is sum_Use p(Use) factor(Use,Def,Marginal).

MarginalAverageLogarithm<T>(T)

VMP message to Marginal.

Declaration
public static T MarginalAverageLogarithm<T>(T Use)
Parameters
Type Name Description
T Use

Incoming message from Use.
Returns
Type Description
T

The outgoing VMP message to the Marginal argument.
Type Parameters
Name Description
T

The type of the messages.
Remarks

The outgoing message is the factor viewed as a function of Marginal with Use integrated out. The formula is sum_Use p(Use) factor(Use,Def,Marginal).

MarginalAverageLogarithmInit<T>(T)

Declaration
public static T MarginalAverageLogarithmInit<T>(T Def)
    where T : ICloneable
Parameters
Type Name Description
T Def

Incoming message from Def.
Returns
Type Description
T
Type Parameters
Name Description
T

The type of the messages.
Remarks

UseAverageLogarithm<T>(T)

VMP message to Use.

Declaration
public static T UseAverageLogarithm<T>(T Def)
Parameters
Type Name Description
T Def

Incoming message from Def.
Returns
Type Description
T

The outgoing VMP message to the Use argument.
Type Parameters
Name Description
T

The type of the messages.
Remarks

The outgoing message is a distribution matching the moments of Use as the random arguments are varied. The formula is proj[sum_(Def) p(Def) factor(Use,Def,Marginal)].