Journal
SCIENCE IN CHINA SERIES F-INFORMATION SCIENCES
Volume 49, Issue 2, Pages 175-188Publisher
SCIENCE PRESS
DOI: 10.1007/s11432-006-0175-y
Keywords
t-norm; fuzzy logic system UL*; completeness; UL*-algebras; approximate reasoning
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Based on the Schweizer-Sklar t-norm, a fuzzy logic system UL* is established, and its soundness theorem and completeness theorem are proved. The following facts are pointed out: the well-known formal system SBL similar to is a semantic extension of UL*; the fuzzy logic system IMTL Delta is a special case of UL* when two negations in UL* coincide. Moreover, the connections between the system UL* and some fuzzy logic formal systems are investigated. Finally, starting from the concepts of the strength of an 'AND' operator by R.R. Yager and the strength of fuzzy rule interaction by T. Whalen, the essential meaning of a parameter p in UL* is explained and the use of fuzzy logic system UL* in approximate reasoning is presented.
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