Subject
Computer Science
Topic
Artificial Intelligence
A decision-tree node contains 4 examples of one class and 4 of the other. What is its entropy in bits?
A decision-tree node contains 4 examples of one class and 4 of the other. What is its entropy in bits?
a)
0b)
1c)
0.5d)
2Explanation
Each class has probability 0.5: −0.5 log2 0.5 − 0.5 log2 0.5 = 0.5 + 0.5 = 1 bit, the maximum for two classes.Related questions
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