Causal Maps: Theory, Implementation, and Practical Applications in Multiagent Environments
IEEE Transactions on Knowledge and Data Engineering
Yin Yang bipolar logic and bipolar fuzzy logic
Information Sciences—Informatics and Computer Science: An International Journal - Special issue: Informatics and computer science intelligent systems applications
Comparing the inference capabilities of binary, trivalent and sigmoid fuzzy cognitive maps
Information Sciences: an International Journal
Decision making by simulating fuzzy cognitive map models
SMO'05 Proceedings of the 5th WSEAS international conference on Simulation, modelling and optimization
International Journal of Data Mining and Bioinformatics
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An NPN (Negative-Positive-Neutral) fuzzy set theory and an NPN qualitative algebra (Q-algebra) are proposed which form a computational framework for bipolar cognitive modeling and multiagent decision analysis. First a 6-valued NPN logic is introduced which extends the usual 4-valued Q-algebra (S,≈,⊕,⊗) and S={+,-,0,?} by adding one more level of specification; and then a real-valued NPN fuzzy logic is introduced which extends the 6-valued model to the real space {∀(x,y)|(x,y)∈[-1,0]×[0,1]} and adds infinite levels of specifications, As a generalization, a fuzzy set theory is presented that allows β-level fuzzy number-based NPN variables (x,y) to be substituted into (S,≈,⊕,⊗) where ⊗ stands for any NPN T-norm; ⊕ stands for disjunction (V) or union (∪), and β is the number of α-cuts