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Title:
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Adding similarity-based reasoning capabilities to a Horn fragment of possibilistic logic with fuzzy constants
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Author:
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Alsinet, Teresa; Godo i Lacasa, Lluís
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Notes:
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PLFC is a first-order possibilistic logic dealing with fuzzy constants and fuzzily restricted quantifiers. The refutation proof method in PLFC is mainly based on a generalized resolution rule which allows an implicit graded unification among fuzzy constants. However, unification for precise object constants is classical. In order to use PLFC for similarity-based reasoning, in this paper we extend a Horn-rule sublogic of PLFC with similarity-based unification of object constants. The Horn-rule sublogic of PLFC we consider deals only with disjunctive fuzzy constants and it is equipped with a simple and efficient version of PLFC proof method. At the semantic level, it is extended by equipping each sort with a fuzzy similarity relation, and at the syntactic level, by fuzzily “enlarging” each non-fuzzy object constant in the antecedent of a Horn-rule by means of a fuzzy similarity relation. |
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Subject(s):
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-Possibilistic logic
-Fuzzy constants
-Horn-rule sublogic
-Similarity-based unification
-Programació lògica
-Lògica probabilística |
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Rights:
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(c) Elsevier, 2004
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Document type:
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article
acceptedVersion |
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Published by:
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Elsevier
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