Vagueness of concepts: an issue in knowledge-based decision support systems for design?

Per Galle

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    Many of our everyday concepts are vague. It is next to impossible, for example, to state necessary and sufficient conditions for something to be a chair, or a building. This would appear to pose a potential problem for the construction of knowledge-based decision-support systems; notably systems for support of artefact design. The problem arises to the extent that such systems are inherently deterministic and rely on symbolic representations of the vague concepts: Should the system behaviour reflect the vagueness of the represented concepts (for example by simulating non-determinism)? And should we try to accommodate the vagueness of concepts in our symbolic representations of them (for example using fuzzy logic)? In this paper I discuss the problem in a context of design support systems, and reach a conclusion in favour of a negative answer to these questions.
    Original languageEnglish
    Title of host publicationAdvances in Collaborative Decision-Support Systems for Design, Planning, and Execution
    Place of PublicationSan Luis Obispo
    PublisherCAD Research Center, Cal Poly
    Publication date1998
    Publication statusPublished - 1998
    Event10th International Conference on Systems Research, Informatics and Cybernetics - Baden-Baden, Germany
    Duration: 17 Aug 199821 Aug 1998
    Conference number: 10


    Conference10th International Conference on Systems Research, Informatics and Cybernetics

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