Matlab Fuzzy logic

Let’s consider the following example:

We have three input criteria for computer characteristics and by them we have to determine the price of computer.

For this problem we are using Matlab program

1    1.We are typing fuzzy in command window and press Enter

2       2.In opened FIS editor we are creating 3 inputs(HDD, RAM, videocard)  and 1 output (price)

3. For 1^st input we have 3 categories.  Range will be from 0 to 500.

1.mal(0 50 100 150)

2.sred(100 200 250 350)

3.bol(300 400 500 1000)

4. For second input we will have 4 categories. (Range from 0 to 16) :

1.malenkaya(0 0.5 1 1.5)

2.srednaya(1.5 3 4 6)

3.xoro6aya(5 7 10 12)

4. WOW(10 12 14 20)

5. For third input we will have 3 categories (Range from 0 to 4):

1. Bad (0 0,5 0,7 1)

2. Good (0,7 1,5 2 2,5)

3. Best (2,5 3 3,5 4)

We will have 3 categories for output:

 Then we have to build our Rules in Rules Editor. There will be 36 rules in this case.