{"base_features":["p_classifier","dbscan_score","dbscan_is_anom","p_corroboration","p_measurement"],"honest_caveats":["p_classifier is IN-SAMPLE from v3.3, which itself was trained on the same labels. Proper stacked CV would use out-of-fold v3.3 scores; this baseline is an honest starting point \u2014 any genuine lift here is over a self-confident base learner.","Per-measurement classifier has AUC ~1.0 by reconstructing the labeling rule, so its contribution to the meta-learner may be inflated; weight magnitudes printed below.","DBSCAN scores cover 92.6% of training rows; the remaining 7.4% fall back to 0."],"loaded":true,"loco_summary":{"mean_f1":0.8298711340206186,"median_f1":0.8974,"n_countries_evaluated":97,"n_countries_skipped":34},"logistic_regression":{"auc_mean":0.9032817765978418,"auc_std":0.01291969008120926,"f1_mean":0.7533941566434933,"f1_std":0.017109692897923485,"n_folds":5,"prec_mean":0.7678763805949448,"rec_mean":0.7428491351697628,"thr_mean":0.554},"meta_learner_coefficients":{"dbscan_is_anom":0.3243,"dbscan_score":0.1359,"p_classifier":1.9479,"p_corroboration":0.0007,"p_measurement":0.1215},"meta_learner_intercept":-0.3586,"mlp":{"auc_mean":0.8976527032002004,"auc_std":0.015712525969636324,"f1_mean":0.7527417787162152,"f1_std":0.018772728083087626,"n_folds":5,"prec_mean":0.8394228652026641,"rec_mean":0.6864149583600255,"thr_mean":0.42000000000000004},"passed_promote_gates":false,"promote":{"f1_gate":false,"loco_gate":true,"loco_median_f1":0.8974,"loco_median_f1_required":0.85,"promoted":false,"stratified_f1_delta":0.011013113376377004,"stratified_f1_delta_required":0.02},"schema":"voidly-stacking-info/v1","trained_at":"2026-05-21T12:58:40.636849+00:00","v33_baseline":{"f1_mean":0.7423810432671163,"f1_std":0.017465054890841082,"method":"5-fold stratified CV with per-fold optimal threshold sweep on p_classifier directly","thr_mean":0.336},"version":"v3.7-stacking","winner":"logistic_regression"}