{ "target": "same-day NIFTY 50 close > same-day NIFTY 50 open after first five 1-minute bars", "model_name": "blend_extra_trees_tight_logit_overlay", "threshold": 0.425, "train_rows": 2221, "valid_rows": 405, "test_rows": 187, "train_start": "2015-01-09", "train_end": "2023-12-29", "valid_start": "2024-01-01", "valid_end": "2025-08-14", "test_start": "2025-08-18", "test_end": "2026-05-21", "validation_accuracy": 0.654320987654321, "test_accuracy": 0.6524064171122995, "baseline_test_accuracy": 0.5240641711229946, "validation_auc": 0.6623500611995106, "test_auc": 0.6563861499656042, "validation_log_loss": 0.6563017134616456, "test_log_loss": 0.6607799782446233, "test_brier": 0.2339533732973711, "feature_count": 219, "latest_input_date": "2026-05-21", "latest_first5_start": "2026-05-21 09:15:00", "latest_first5_end": "2026-05-21 09:19:00", "latest_prob_up": 0.4379885393062093, "latest_prediction": "UP", "latest_confidence": 0.5129885393062092 }