Six Problems for Story Understanders

Peter Norvig

Story understanding programs have been classified as script-based processors, goal-based pro-cessors or multi-level processors. Each program introduces a new knowledge structure and invents a mechanism to make inferences and manage memory for that knowledge structure. This can lead to a prol-iferation of incomplete, incompatible processing mechanisms. The alternative presented here is to concentrate on the processing mechanism. It is sug-gested that a single inferencing scheme can deal with all knowledge structures in a uniform manner. Six basic problems that such a processor must address are presented and discussed.

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