3.2 Adding new rule classes (Rule Signature)

Setting the signature allows the designer of the rule to control where it can be used. A connection is valid only it matches the signature. A rule starts out with a very generic signature and we set the signature to the current connections. However, in this example, we want something slightly more general. The input variable is fine, but we would like the output variable to be "MOV" not "Mov-25-B". To get this effect, we use the signature editor tool (Figure 8). We adjust the signature of the output variable (by moving up and down the class hierarchy) to have "MOV" as the output rule.

Figure 8. Signature Editor for "Steam-Mov-Rule". We adjust the signature to the more general (MOV | Live-Steam).

Finally, we are ready to edit the probability distribution for this rule.

Continue with this example and edit the probability distribution.

Model Construction. Go back to the begining of this example.

Return to the main example page.

Back to overview of Graphical-Belief.

View a list of Graphical-Belief in publications and downloadable technical reports.

The Graphical-Belief user interface is implemented in Garnet.

Get more information about obtaining Graphical-Belief (and why it is not generally available).

get the home page for Russell Almond , author of Graphical-Belief.

Click here to get to the home page for Insightful (the company that StatSci has eventually evolved into).

Russell Almond, <lastname> (at) acm.org

Last modified: Fri Aug 16 18:47:04 1996