Next: Event-handling information. Up: Contextual Schemas Previous: Attention-focusing information.

Action-selection information.

Contextual schemas can also help the agent decide how to achieve goals. This information is stored in two places, the c-schema's description of the goal and in its scenes, which describe actions that are predicted to be useful in the context. The goal description lists a scene that describes an appropriate action to achieve it.

In a schema-based reasoner, the action described is not necessarily the one selected [\protect\citenameTurner, 1994]. Procedural schemas are, like c-schemas, organized in generalization-specialization hierarchies. The suggested p-schema serves as an entry point into those hierarchies, from which the agent can find more specific p-schemas based on features of the particular situation.


rmt@cdps.umcs.maine.edu
Fri May 6 09:57:28 EDT 1994