Question: (Gain and Entropy) 4a. Given a training data set Y: Y A B C Class 15 1 A C 1 20 3 B C 2

(Gain and Entropy) 4a. Given a training data set Y:

Y

A

B

C

Class

15

1

A

C1

20

3

B

C2

25

2

A

C1

30

4

A

C1

35

2

B

C2

25

4

A

C1

15

2

B

C2

20

3

B

C2

Find the best threshold (for the maximal gain) for Attribute A.

Find the best threshold (for the maximal gain) for Attribute B.

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