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Conference Papers Year : 2013

On various forms of bipolarity in flexible querying

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Abstract

The paper discusses the modeling of “if possible" in requirements of the form “A and if possible B". We distinguish between two types of understanding: either i) A and B are requirements of the same nature and are viewed as constraints with different levels of priority, or ii) they are of different nature (only A induces constraint(s) and B is only used for breaking ties among items that are equally satisfying A). We indicate that the two views are related to different types of bipolarity, and discuss them in relation with possibilistic logic. The disjunctive dual of the first view (“A or at least B") is then presented in this logical setting. We also briefly mention the idea of an extension of the second view where B may refer both to bonus conditions or malus conditions that may increase or decrease respectively the interest in an item satisfying A.
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Dates and versions

hal-01212927 , version 1 (07-10-2015)

Licence

Attribution - NonCommercial - CC BY 4.0

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Didier Dubois, Henri Prade. On various forms of bipolarity in flexible querying. 8th European Society For Fuzzy Logic And Technology Conference (EUSFLAT 2013), Sep 2013, Milan, Italy. pp.326-333, ⟨10.2991/eusflat.2013.52⟩. ⟨hal-01212927⟩
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