Elsewhere, there is a description of a computer program design which aims at satisfying incompletely defined user needs through a man-machine dialogue which does not require a query formulation by the user. The program attempts to satisfy the user's needs from a model which it builds of his interests -a model which is a subset of its own 'world model', the data base. This paper discusses current work based on this program design. Possibilities of the program creating virtual world models to prevent the user unnecessarily accessing the whole data base, as well as incorporating a form of weighting based on association strenghs between items in the data base are explored.
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