Question

build the decision tree to classify the animals. Calculate the entropy at the root node

Answer 1

There is a special node called root node. Once a decision tree is built, it is applied to any test to classify .The calculation of entropy in the observed cases can be obtained as.

Answer 2

The entropy of a node typically decreases as we go down a decision tree. C) Entropy is a ... expression for entropy of S with respect to this binary classification.