From a possibility theory view of formal concept analysis to the possibilistic handling of incomplete and uncertain contexts

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Conference Proceeding
CEUR Workshop Proceedings, 2016, 1703 pp. 79 - 88
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© 2016, CEUR-WS. All rights reserved. The formal similarity between possibility theory and formal concept analysis, made ten years ago, has suggested the introduction in the latter setting of the counterpart of possibilistic operators, which were ignored before. These new operators can be related to the basic operator of formal concept analysis by a triple use of negations on the contexts, on the set-valued arguments and on the obtained results, and lead to consider new compositions worth of interest. They enable us to complete the Guigues-Duquenne basis with rules having disjunctive conclusions. Besides, the approach can be naturally generalized to incomplete contexts and then to uncertain context where uncertainty is graded.
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