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How Gini Index is different from entropy value for splitting the node?

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@sid100158 wrote:

I am studying about decision tree and the parameters which help in splitting the decision tree while studying I found two parameters one entropy and other is the Gini index.

Gini index - a measure of total variance across the classes.

entropy - a measure of undorderness

I want to know the difference between them and which of them are used for spliiting the decision tree

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