1.0 Adding new variables

The first step is to create the new variable for live steam. Because Graphical-Belief uses object-oriented model construction, we always create a new variable as an instance of another variable. In this case, the "Live-Steam" variable will be an instance of a "Yes-No-Variable." Because we have not used any "Yes-No-Variables" in the LPCI system fault tree, it does not appear in the template space on the side of the model graph. Therefore we use the find object gadget (Figure 1) to locate it in library space.

Figure 1. Using the find object gadget to search for "Yes-No-Variable." We then add it to the model with the buttons on the side.

We search for the object "Yes-No-Variable" and first add the prototype variable to the template space, then we create an instance of it to add to the model. (We can do this either by dragging it from the template window at the left of the graph into the model or by using the buttons on the find object gadget.) We name the new variable "Live-Steam". To set other properties of the model we open the variable property sheet (Figure 2).

Continue with the example and edit the properties of the new variable.

Model Construction. Go back to the begining of the model construction 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 18:40:55 1996