In this article the problem of assessing the quality of hypertext views is considered. This is done in terms of a formal model of hypertext in which the view is a central aspect. The objects in a view are described in terms of so called index expressions which are a powerful object characterization mechanism. These characterizations are manipulated by a calculus, which allows quantification of notions such as cohesion and relevance. These latter are useful criteria for judging the quality of a view.
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