Unlike classical logic which requires a deep under­ standing of a system, exact equations, and precise numeric values, fuzzy logic incorporates an alternative way of thinking, which allows modeling complex systems using a higher level of abstraction originating from our knowledge and experience.

1. Fuzzy Sets and Fuzzy Logic.- 1.1 Fuzzy sets.- 1.2 Operations on fuzzy sets.- 1.3 The extension principle.- 1.4 t-norm-based operations on fuzzy numbers.- 1.5 Product-sum of triangular fuzzy numbers.- 1.6 Hamacher-sum of triangular fuzzy numbers.- 1.7 t-norm-based addition of fuzzy numbers.- 1.8 A functional relationship between t-norm-based addition and multiplication.- 1.9 On generalization of Nguyen’s theorems.- 1.10 Measures of possibility and necessity.- 1.11 A law of large numbers for fuzzy numbers.- 1.12 Metrics for fuzzy numbers.- 1.13 Possibilistic mean value and variance of fuzzy numbers.- 1.14 Auxiliary lemmas.- 1.15 Fuzzy implications.- 1.16 Linguistic variables.- 2. Fuzzy Multicriteria Decision Making.- 2.1 Averaging operators.- 2.2 Obtaining maximal entropy OWA operator weights.- 2.3 OWA Operators for Ph.D. student selection.- 2.4 Possibility and necessity in weighted aggregation.- 2.5 Benchmarking in linguistic importance weighted aggregations.- 3. Fuzzy Reasoning.- 3.1 The theory of approximate reasoning.- 3.2 Aggregation in fuzzy system modeling.- 3.3 Multiple fuzzy reasoning schemes.- 3.4 Some properties of the compositional rule of inference.- 3.5 Computation of the compositional rule of inference under t-norms.- 3.6 On the generalized method-of-case inference rule.- 4. Fuzzy Optimization.- 4.1 Possibilistic linear equality systems.- 4.2 Sensitivity analysis of ãx = b? and ã?x = b??..- 4.3 Possibilistic systems with trapezoid fuzzy numbers.- 4.4 Flexible linear programming.- 4.5 Fuzzy linear programming with crisp relations.- 4.6 Possibilistic linear programming.- 4.7 Possibilistic quadratic programming.- 4.8 Multiobjective possibilistic linear programming.- 5. Fuzzy Reasoning for Fuzzy Optimization.- 5.1 Fuzzy reasoning for FMP.- 5.2Optimization with linguistic variables.- 5.3 Multiobjective optimization with lingusitic variables.- 5.4 Interdependent multiple criteria decision making.- 5.4.1 The linear case.- 5.4.2 Application functions.- 5.5 MOP with interdependent objectives.- 5.6 Additive linear interdependences.- 5.7 Additive nonlinear interdependences.- 5.8 Compound interdependences.- 5.9 Biobjective interdependent decision problems.- 6. Applications in Management.- 6.1 Nordic Paper Inc.- 6.2 A fuzzy approach to real option valuation.- 6.3 The Woodstrat project.- 6.4 Soft computing methods for reducing the bullwhip effect.- 6.4.1 The bullwhip effect, some additional details.- 6.4.2 Explanations for the bullwhip effect: standard results.- 6.4.3 Demand signal processing.- 6.4.4 Order batching.- 6.4.5 Price variations.- 6.4.6 A fuzzy approach to demand signal processing.- 6.4.7 A fuzzy logic controller to demand signal processing.- 6.4.8 A hybrid soft computing platform for taming the bullwhip effect.- 7. Future Trends in Fuzzy Reasoning and Decision Making.- 7.1 Software agents and agent-based systems.- 7.2 Intelligence and software agents.- 7.3 Scenario agents.- 7.4 Scenarios and scenario planning: key features.- 7.5 Forecasting.- 7.6 Industry foresight.- 7.7 The scenario agent.- 7.8 Interpretation agent.- 7.9 Coping with imprecision.- 7.10 Interpretation in a business environment.- 7.11 Mental models and cognitive maps.- 7.12 A preliminary description of an interpretation agent.- 7.13 An interpretation agent: details.

This book starts with the basic concepts of fuzzy arithmetics and progresses through the analysis of sup-t-norm-extended arithmetic operations, possibilistic linear systems and fuzzy reasoning approaches to fuzzy optimization. Four applications of (interdependent) fuzzy optimization and fuzzy reasoning to strategic planning, project management with real options, strategic management and supply chain management are presented and carefully discussed. The book ends with a detailed description of some intelligent software agents, where fuzzy reasoning schemes are used to enhance their functionality. It can be useful for researchers and students working in soft computing, applied mathematics, operations research, management science, information systems, intelligent agents and artificial intelligence.

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