MMI Design Documentation: Representing the User's Model of a System

Abstract
It is argued that the human factors-oriented system developer is armed with an inadequate set of tools for describing future designs and user requirements in terms compatible with a system analyst's needs. Task analysis and function allocation procedures are not entirely adequate. A method for procedure description that creates a syntactically formal specification using actions and objects which may or may not be formally definable is described as a partial solution to the problem. The ultimate solution is described as the use of a knowledge representation language to specify both the user's model and the implementer's specifications in order to make possible direct comparisons and promote communication across the design interface.

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