(20 marks)
4. Describe the steps to develop a fuzzy expert system for time-series forcasting tasks. What is the most laborous and tedious part in this process?
- Specify the problem and define the linguistic variables.
- Determine fuzzy sets.
- Elicit and construct fuzzy rules.
- Encode the fuzzy sets, fuzzy rules and procedures to perform fuzzy inference into the expert system.
- Evaluate and tune the system.
Most tedious:
Extrating the knowledge from the expert is a bottle neck in all expert systems development. However after the linguistic variables are defined, tuning and tweaking the fuzzy sets and rules is the most tedious and time consuming part of the development cycle. It is an iterative process.