An Approach to the Organization of Knowledge and its use in Natural Language Recall Tasks

Abstract The viewpoint espoused in this paper is that natural language understanding and production is the action of a number of highly integrated domain-specific specialists. Described first is an object oriented representation scheme which allows these specialists to be built. Discussed next is the organization of these specialists into a four-level goal hierarchy that enables the modelling of natural language conversation. It is shown how the representation and natural language structures can be used to facilitate the recall of earlier natural language conversations. Six specific kinds of recall tasks are outlined in terms of these structures and their occurrence in several legal dialogues is examined. Finally, the need for intelligent garbage collection of old episodic information is pointed out.

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