{"key": "cancel-f7", "idea": "Measure-only: cancel the side the rival just retreated from (candidate d-s23-retreat-cancel, spreads 2 and 3) vs comparator N, on frozen finalist seeds 903000-903499.", "candidate_sha256": "3c07bdcd221ac25729c3ebc92b21ac9e2014510ecb85816c4391ed81e933291f", "comparator_sha256": "bf0d179f3e47d28819f6fa7e0d25548c2ced43374c216d36460b00a26a26ffae", "seeds": {"start": 903000, "end": 903499}, "n": 500, "complete": true, "missing_seeds": [], "failures": [], "check_values": [17.116002, 20.017111, 2.390311, 241.484752], "python_version": "3.14.4 (main, Aug 20 2026, 10:41:58) [GCC 15.2.0]", "seconds_per_simulation": 0.2976, "overall": {"n": 500, "sum_d": 357.98750886100026, "sum_d2": 5333.82011767838, "mean_diff": 0.7159750177220006, "se": 0.14265602511535538, "comparator_mean": 100.1041557775644, "candidate_mean": 100.8201307952864, "retail_diff": -0.04614818598840032, "arb_diff": 0.7621232037008002}, "by_spread": {"1": {"n": 125, "sum_d": 0.0, "sum_d2": 0.0, "mean_diff": 0.0, "se": 0.0, "comparator_mean": 51.128596552261605, "candidate_mean": 51.128596552261605, "retail_diff": 0.0, "arb_diff": 0.0}, "2": {"n": 127, "sum_d": 218.78413366240028, "sum_d2": 4356.856047809046, "mean_diff": 1.7227097138771676, "se": 0.498714413728796, "comparator_mean": 105.45170150479684, "candidate_mean": 107.17441121867401, "retail_diff": 0.023755055814961255, "arb_diff": 1.698954658041733}, "3": {"n": 123, "sum_d": 139.20337519859999, "sum_d2": 976.9640698693331, "mean_diff": 1.131734757712195, "se": 0.2336799996737334, "comparator_mean": 121.06816385628943, "candidate_mean": 122.19989861400163, "retail_diff": -0.21212182994065235, "arb_diff": 1.3438565876349595}, "4": {"n": 125, "sum_d": 0.0, "sum_d2": 0.0, "mean_diff": 0.0, "se": 0.0, "comparator_mean": 123.0180245945336, "candidate_mean": 123.0180245945336, "retail_diff": 0.0, "arb_diff": 0.0}}, "per_seed": [[903000, 4, 0.0], [903001, 4, 0.0], [903002, 4, 0.0], [903003, 1, 0.0], [903004, 2, 1.890185], 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0.0], [903298, 4, 0.0], [903299, 3, 0.953058], [903300, 4, 0.0], [903301, 4, 0.0], [903302, 2, -0.645044], [903303, 3, -0.028611], [903304, 2, 0.003381], [903305, 3, 1.163051], [903306, 4, 0.0], [903307, 4, 0.0], [903308, 1, 0.0], [903309, 2, 0.129899], [903310, 3, 0.573205], [903311, 4, 0.0], [903312, 3, -0.016046], [903313, 4, 0.0], [903314, 1, 0.0], [903315, 3, 0.139894], [903316, 2, -1.194975], [903317, 3, 0.072898], [903318, 3, 0.215914], [903319, 1, 0.0], [903320, 1, 0.0], [903321, 1, 0.0], [903322, 1, 0.0], [903323, 2, 6.6049], [903324, 3, 0.178279], [903325, 1, 0.0], [903326, 4, 0.0], [903327, 1, 0.0], [903328, 4, 0.0], [903329, 2, 0.2835], [903330, 3, 0.540447], [903331, 3, 2.35119], [903332, 2, 7.061802], [903333, 2, 0.357061], [903334, 2, 3.186753], [903335, 3, 2.125655], [903336, 3, 0.758177], [903337, 3, 0.998626], [903338, 4, 0.0], [903339, 1, 0.0], [903340, 2, 0.047503], [903341, 2, -2.842028], [903342, 2, 0.211593], [903343, 4, 0.0], [903344, 1, 0.0], [903345, 3, -0.299769], [903346, 1, 0.0], [903347, 4, 0.0], [903348, 1, 0.0], [903349, 2, 5.952279], [903350, 3, 0.063421], [903351, 3, 0.506771], [903352, 3, 1.787817], [903353, 1, 0.0], [903354, 3, 0.5919], [903355, 2, 0.594328], [903356, 4, 0.0], [903357, 1, 0.0], [903358, 1, 0.0], [903359, 4, 0.0], [903360, 1, 0.0], [903361, 3, 10.731939], [903362, 2, 1.756641], [903363, 2, 0.92645], [903364, 2, 1.627526], [903365, 3, 8.068183], [903366, 4, 0.0], [903367, 1, 0.0], [903368, 4, 0.0], [903369, 2, 1.882307], [903370, 1, 0.0], [903371, 4, 0.0], [903372, 3, 2.000983], [903373, 4, 0.0], [903374, 2, 6.171904], [903375, 3, -0.55714], [903376, 2, 0.863807], [903377, 2, 0.327817], [903378, 3, 0.217839], [903379, 4, 0.0], [903380, 3, 4.006517], [903381, 1, 0.0], [903382, 2, -0.382227], [903383, 1, 0.0], [903384, 4, 0.0], [903385, 4, 0.0], [903386, 3, 1.515781], [903387, 3, -0.018741], [903388, 3, 1.950106], [903389, 4, 0.0], [903390, 4, 0.0], [903391, 1, 0.0], [903392, 4, 0.0], [903393, 3, -0.142688], 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[903441, 4, 0.0], [903442, 4, 0.0], [903443, 3, 1.617415], [903444, 1, 0.0], [903445, 3, 2.201904], [903446, 4, 0.0], [903447, 2, -0.8181], [903448, 1, 0.0], [903449, 1, 0.0], [903450, 1, 0.0], [903451, 3, 0.355143], [903452, 2, 4.579133], [903453, 3, 0.595359], [903454, 1, 0.0], [903455, 4, 0.0], [903456, 2, 9.51568], [903457, 2, 0.891572], [903458, 3, 1.60879], [903459, 3, 1.442283], [903460, 2, -0.236381], [903461, 4, 0.0], [903462, 2, 0.336952], [903463, 4, 0.0], [903464, 1, 0.0], [903465, 3, 0.31306], [903466, 4, 0.0], [903467, 1, 0.0], [903468, 3, 3.731223], [903469, 1, 0.0], [903470, 4, 0.0], [903471, 2, 1.016097], [903472, 2, 0.151349], [903473, 3, 0.319207], [903474, 2, 0.076865], [903475, 2, 0.294787], [903476, 3, 0.351106], [903477, 1, 0.0], [903478, 2, -0.00662], [903479, 2, 0.230469], [903480, 1, 0.0], [903481, 1, 0.0], [903482, 4, 0.0], [903483, 3, 0.20397], [903484, 3, 8.970655], [903485, 1, 0.0], [903486, 2, 0.208728], [903487, 1, 0.0], [903488, 2, 0.086033], [903489, 3, 0.164091], [903490, 2, 10.990806], [903491, 1, 0.0], [903492, 4, 0.0], [903493, 2, 0.915447], [903494, 2, 1.882391], [903495, 1, 0.0], [903496, 4, 0.0], [903497, 3, 0.087139], [903498, 2, 0.198498], [903499, 2, 7.260095]], "notes": "Candidate is identical to comparator N at spreads 1 and 4 (d=0 exactly for all such seeds), differing only at spreads 2 and 3 as its name implies. Overall paired gain 0.716 (se 0.143) exceeds 2x se, i.e. a real improvement over N on this block."}