1. Fuzzy Logics

2. Introduction Not a logic that is fuzzy but a logic to solve fuzziness
Fuzzy Logic (FL) is a method of reasoning that resembles human reasoning.
Involves all intermediate possibilities between digital values YES and NO.
Inventor: Lotfi Zadeh

3. Introduction A range of possibilities between yes or no
Fuzzy logic Works on Level of possibilities for output

4. Advantages It can control machines Deals with uncertainty
Acceptable reasoning
Easy to construct and understand

5. Architecture Fuzzification Module: Knowledge base: Inference module:
Transforms system input.
Knowledge base:
Stores if-then
Inference module:
Simulates human reasoning on input
De-fuzzification Module:
Transform fuzzy logics back to crisp

6. Architecture Cont.….

7. Membership function
Allows to quantify linguistic term and represent a fuzzy set graphically
μA:X → [0,1]
Membership value: mapping between the elements

8. Example