A fuzzy logic exercise

I gave the following task to my students today:

Using the Matlab’s Fuzzy Logic Toolbox, build a fuzzy inference system that will help you to decide which optional course to study.

Choose appropriate linguistic variables (e.g. the difficulty of the course material, the weirdness of the lecturer, etc), fuzzy sets (e.g. the course is easy/normal/difficult), fuzzy rules, aggregation and defuzzification methods.

Then apply your system to either your own or to some imaginary situation, and send me the report of your findings.

Your work will be evaluated according to the following fuzzy rules:

IF (your system is designed correctly)
   AND (your work is funny)

THEN your mark is very high

IF (your system is designed correctly)
   AND (your work is not funny)

THEN your mark is moderately high

IF (your system is designed incorrectly)
   AND (your work is funny)

THEN your mark is moderately low

IF (your system is designed incorrectly)
   AND (your work is not funny)

THEN your mark is very low

IF (you write that you have chosen Fuzzy Logic because
   Dr. Vlad is a wonderful teacher)

THEN your mark is extremely low

Some students chose “Madness of Lecturer” as an input variable.

Definitely, every lecturer has some degree of madness.

One student suggested the following fuzzy sets for his variable “weirdness of lecturer”: boring, normal, excellent.

If weirdness = excellent, he decides to take the course.

Dear teachers, please don’t be just boringly weird. You must excel in your weirdness!

Another student wrote about my course “Fuzzy Logic”. He said that his lecturer is kind of weird and gave me the weirdness value 8 out of 10.

But he has still very happily chosen my course because it is interesting (9 out of 10).

One student had an input variable “Fear of the course”.

This is one of the things that I don’t like in Sri Lanka — overwhelming fear.

Before a Sri Lankan does any little thing, he thinks “What trouble will it cause?”, “What will people think about me?”, “How will they look at me?”, “Will the sky fall?” and so on and so forth — an endless list of fears.

I am really tired of it. Tired to see fear in their eyes.

Another student added “Status of Lecturer” to the set of inputs.

According to his system, an extremely weird professor is more preferable than normal lecturer of lower status — another interesting detail of Sri Lankan society.

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Published in: on 21/12/2012 at 23:26  Leave a Comment  

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