Dist

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Description

Retrieves a probability distribution for a Node object, if one exists. If the node has no probability distribution, will return Nothing.

Syntax

Testing: (this expression will be true of the node has a distribution)

(not aNode.Dist is Nothing)

Getting:

aNode.Dist

 

aNode.Dist(indexAssignment, indexState)

Setting:

Set aNode.Dist = aDist

 

Set aNode.Dist = Nothing

 

aNode.Dist(indexAssignment, indexState) = aParameterValue

Parameter	Description
aNode	a Node object.
indexAssignment	an integer or Assignment collection that specifies a "row" of the distribution. The integer is 0-based. An Assignment collection must set all parent nodes.
indexState	an integer, or a string, or a State object specifying a state in the node's States collection, that is a "column" of the distribution.
aDist	a Dist object from which to copy.
aParameterValue	a double-precision floating-point number

Return Value

 

When getting, "(indexAssignment, indexState)" is optional. If it is not given, the Dist object, if any, is returned. If it is given, aParameterValue is returned.

 

Remarks

Setting the Dist property to another Dist object, copies the type and parameters from the other Dist.

 

Setting the Dist property to Nothing, removes the distribution from the node.

 

It is fine for the Assignment collection to set nodes other than the parents; the other nodes are just ignored.

Examples

See: Distributions: an Overview

Properties

Count, Default, Description, Model, MSBN, Node, ParentNodes, Prob, Ref,  Type,  UsingDefault

Methods

None.

Collections

Indexes, KeyObjects

Events

Reset, Remove,

SetValue, SetUsingDefault, SetDefault,
NodeSetName, NodeStateSetName, NodeSetDescription

ParentNodeSetName, ParentNodeStateSetName, ParentNodeSetDescription

 

Applies To

Node