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weighted_entropy

dtrees_rs::algorithms::common::heuristics::helpers

Function weighted_entropy 

Source 
pub fn weighted_entropy(
    parent_distribution: &[usize],
    left_distribution: &[usize],
    right_distribution: &[usize],
    _parent_entropy: f64,
) -> f64
Expand description

Weighted entropy of the two children; infinite when a child is empty.