Question

Which among the following is the correct sequence of events that occur in application of fuzzy logic?

(a) Fuzzify the input, execute the applicable rules, and de-fuzzify the output

(b) Execute the applicable rules, fuzzify the input, and de-fuzzify the output

(c) Fuzzify the input, de-fuzzify the output, and execute the applicable rules

(d) Execute the applicable rules, fuzzify the input, and fuzzify the output

I got this question in an interview.

I'm obligated to ask this question of Techniques in section Cognitive Techniques of Cognitive Radio

Answer 1

(a) Fuzzify the input, execute the applicable rules, and de-fuzzify the output

In fuzzy logic systems, the typical sequence of events is:

1. Fuzzify the input: Convert crisp input values into fuzzy values using membership functions.
2. Execute the applicable rules: Use fuzzy rules (e.g., "If-Then" statements) to determine the fuzzy output based on the fuzzy inputs.
3. De-fuzzify the output: Convert the fuzzy output back into a crisp value to make a final decision or output.

This sequence ensures the system can handle uncertainty and partial truths, which are core principles of fuzzy logic.