Title :
Solving Zadeh´s Magnus challenge problem on linguistic probabilities via Linguistic Weighted Averages
Author :
Rajati, M.R. ; Mendel, J.M. ; Dongrui Wu
Author_Institution :
Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
In this paper, we present a solution to Zadeh´s Magnus challenge problem on linguistic probabilities. First, we implement Zadeh´s solution to this problem. Then, we use the intersection-product syllogism and a syllogism based on the entailment principle to interpret the problem so that it can be solved via Linguistic Weighted Averages. We show that the problem can be solved by calculation of pessimistic (lower) and optimistic (upper) probabilities via Linguistic Weighted Averages. Then, we choose vocabularies for quantifiers and linguistic probabilities that are involved in the problem statement. The vocabularies are modeled using interval type-2 fuzzy sets. We calculate optimistic (upper) and pessimistic (lower) probabilities, which naturally would be interval type-2 fuzzy sets. Finally, we map the pessimistic and optimistic probabilities to linguistic probabilities present in the vocabularies, so that the results can be comprehended by a human.
Keywords :
computational linguistics; fuzzy reasoning; fuzzy set theory; problem solving; Zadeh´s Magnus challenge problem solving; intersection-product syllogism; interval type-2 fuzzy sets; linguistic probabilities; linguistic weighted averages; optimistic probability; pessimistic probability; Fuzzy sets; Humans; Natural languages; Pragmatics; Probability; Semantics; Vocabulary; Computing with words; interval type-2 fuzzy sets; linguistic weighted average; lower and upper probabilities;
Conference_Titel :
Fuzzy Systems (FUZZ), 2011 IEEE International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-7315-1
Electronic_ISBN :
1098-7584
DOI :
10.1109/FUZZY.2011.6007614