Information Value and Weight of Evidence (credit classification)

Bin key features, compute WoE and IV against the Bad flag, and rank features. Concepts: WoE, IV; binning; credit-risk practice Project A: IV ranking (your Cell 23): checking ≈ 0.63, duration ≈ 0.22, credit history ≈ 0.19, savings ≈ 0.19, purpose ≈ 0.11, property ≈ 0.11. Compute WoE/IV on the TRAIN split; bins with 0 Bad or 0 Good need smoothing (+0.5). Project B: Not applicable (continuous target): use mutual information and correlation rankings from E07.