Class ReplicateExitingOp

Provides outgoing messages for ReplicateExiting<T>(T, Int32), given random arguments to the function.

Inheritance

Object

ReplicateExitingOp

Namespace: Microsoft.ML.Probabilistic.Factors

Assembly: Microsoft.ML.Probabilistic.dll

Syntax

public static class ReplicateExitingOp : object

Remarks

This factor is like Replicate<T>(T, Int32) 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(Uses,Def,count)). Adding up these values across all factors and variables gives the log-evidence estimate for VMP.

DefAverageLogarithm<T>(IList<T>, T)

VMP message to Def.

Declaration

public static T DefAverageLogarithm<T>(IList<T> Uses, T result)
    where T : SettableTo<T>

Parameters

Type	Name	Description
IList<T>	Uses	Incoming message from Uses. Must be a proper distribution. If all elements are uniform, the result will be uniform.
T	result	Modified to contain the outgoing message.

Returns

Type	Description
T	result

Type Parameters

Name	Description
T	The type of the messages.

Remarks

The outgoing message is the factor viewed as a function of Def with Uses integrated out. The formula is sum_Uses p(Uses) factor(Uses,Def,count).

Exceptions

Type	Condition
ImproperMessageException	Uses is not a proper distribution.

UsesAverageLogarithm<T>(IList<T>, T, Int32, T)

VMP message to Uses.

Declaration

public static T UsesAverageLogarithm<T>(IList<T> Uses, T Def, int resultIndex, T result)
    where T : SettableTo<T>, SettableToProduct<T>

Parameters

Type	Name	Description
IList<T>	Uses	Incoming message from Uses.
T	Def	Incoming message from Def.
Int32	resultIndex	Index of the Uses for which a message is desired.
T	result	Modified to contain the outgoing message.

Returns

Type	Description
T	result

Type Parameters

Name	Description
T	The type of the messages.

Remarks

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

UsesAverageLogarithmInit<T>(T, Int32)

Declaration

public static T UsesAverageLogarithmInit<T>(T Def, int resultIndex)
    where T : ICloneable

Parameters

Type	Name	Description
T	Def	Incoming message from Def.
Int32	resultIndex	Index of the Uses for which a message is desired.

Returns

Type	Description
T

Type Parameters

Name	Description
T	The type of the messages.

Remarks