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Next: How Cassandra Constructs Decision-rules Up: Decision-steps Previous: Formulating Decision-rules

Adding a Decision-rule in our Example

In the bomb-in-the-toilet example, Cassandra will introduce a decision-step to determine whether or not the bomb is in package1. As the uncertainty is in the initial conditions, the decision will be constrained to occur after the start step. It must also occur before either of the dunk actions, since these depend upon particular outcomes of the uncertainty. The decide step will have a precondition to know whether the bomb is in package1. If there are actions available that would allow it to determine this---X-raying the box, for example---Cassandra will achieve this precondition with one of those actions, and decide on that basis which branch of the plan to execute.

Louise Pryor <>;
Last modified: Mon Mar 18 17:20:45 1996