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Approximation operators in qualitative data analysis. (English) Zbl 1203.68193
de Swart, Harrie (ed.) et al., Theory and applications of relational structures as knowledge instruments. COST Action 274, TARSKI. Revised papers. Berlin: Springer (ISBN 3-540-20780-5/pbk). Lect. Notes Comput. Sci. 2929, 214-230 (2003).
Summary: A large part of qualitative data analysis is concerned with approximations of sets on the basis of relational information. In this paper, we present various forms of set approximations via the unifying concept of modal-style operators. Two examples indicate the usefulness of the approach.
For the entire collection see [Zbl 1029.00017].

68T30 Knowledge representation
68T37 Reasoning under uncertainty in the context of artificial intelligence
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