Search (7 results, page 1 of 1)

  • × language_ss:"e"
  • × theme_ss:"Formale Begriffsanalyse"
  • × year_i:[1980 TO 1990}
  1. Wille, R.: Line diagrams of hierarchical concept systems (1984) 0.02 
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  2. Wille, R.: Geometric representations of concept lattices (1989) 0.02 
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  3. Wille, R.: Lattices in data analysis : how to draw them with a computer (1989) 0.02 
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  4. Ganter, B.; Stahl, J.; Wille, R.: Conceptual measurement and many-valued contexts (1986) 0.02 
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  5. Ganter, B.; Wille, R.: Conceptual scaling (1989) 0.02 
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  6. Wille, R.: Knowledge acquisition by methods of formal concept analysis (1989) 0.02 
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  7. Lex, W.: ¬A representation of concepts for their computerization (1987) 0.01 
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    Abstract
    A lattice theoretical description of concept hierarchies is developed using for attributes the terms "given", "negated", "open" and "impossible" as the truth-values of a four-valued logic. Similar to the theory of B. Ganter and R. Wille so does this framework permit a precise representation of the usual interdependences in a field of related concepts - such as superconcepts, subconcept, contrary concepts etc. -, whenever the concepts under consideration can be sufficiently described by the presence or absence of certain attributes ...

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