music/pass4/CROSS_TRACK_DISTINCTNESS.json
{
"instrument": "cross_track_distinctness",
"version": "v1",
"available": true,
"reason": "",
"n_tracks": 3,
"n_pairs": 3,
"n_flagged_pairs": 0,
"pairs": [
{
"a": "PASS4_FLORES_FALLS",
"b": "PASS4_FLORES_ROAD",
"arm": "S",
"similarity": 0.0,
"matching_run_len": 0,
"raw_run_len": 2,
"chance_run_notes": 2.861,
"excess_over_chance": -1.861,
"p_match": 0.2,
"transposition": null,
"time_ratio": null,
"time_scaled": null,
"mismatches": 0,
"tolerant_run_len": 0,
"ngram3": 0.0,
"ngram4": 0.0,
"a_n_notes": 5,
"b_n_notes": 6,
"available": true,
"reason": "",
"flagged": false,
"license_notes": 0,
"license_kind": null,
"license_why": "same theme_family FLORES_THE_KEPT_COUNT -- which licenses mode, instrumentation and dialect, and licenses no notes (Josh: even in the same region we still need novelty)",
"excess_notes": 0,
"above_reuse_floor": false,
"reading": "0 shared notes, similarity 0.000, -1.86 over chance; below the derived floor (>= 4 notes, similarity 0.313, excess +2.35)"
},
{
"a": "PASS4_FLORES_FALLS",
"b": "PASS4_FLORES_ROUNDS",
"arm": "S",
"similarity": 0.0,
"matching_run_len": 0,
"raw_run_len": 2,
"chance_run_notes": 2.279,
"excess_over_chance": -1.279,
"p_match": 0.0833,
"transposition": null,
"time_ratio": null,
"time_scaled": null,
"mismatches": 0,
"tolerant_run_len": 0,
"ngram3": 0.0,
"ngram4": 0.0,
"a_n_notes": 5,
"b_n_notes": 7,
"available": true,
"reason": "",
"flagged": false,
"license_notes": 0,
"license_kind": null,
"license_why": "same theme_family FLORES_THE_KEPT_COUNT -- which licenses mode, instrumentation and dialect, and licenses no notes (Josh: even in the same region we still need novelty)",
"excess_notes": 0,
"above_reuse_floor": false,
"reading": "0 shared notes, similarity 0.000, -1.28 over chance; below the derived floor (>= 4 notes, similarity 0.313, excess +2.35)"
},
{
"a": "PASS4_FLORES_ROAD",
"b": "PASS4_FLORES_ROUNDS",
"arm": "S",
"similarity": 0.0,
"matching_run_len": 0,
"raw_run_len": 2,
"chance_run_notes": 2.0,
"excess_over_chance": -1.0,
"p_match": 0.0333,
"transposition": null,
"time_ratio": null,
"time_scaled": null,
"mismatches": 0,
"tolerant_run_len": 0,
"ngram3": 0.0,
"ngram4": 0.0,
"a_n_notes": 6,
"b_n_notes": 7,
"available": true,
"reason": "",
"flagged": false,
"license_notes": 0,
"license_kind": null,
"license_why": "same theme_family FLORES_THE_KEPT_COUNT -- which licenses mode, instrumentation and dialect, and licenses no notes (Josh: even in the same region we still need novelty)",
"excess_notes": 0,
"above_reuse_floor": false,
"reading": "0 shared notes, similarity 0.000, -1.00 over chance; below the derived floor (>= 4 notes, similarity 0.313, excess +2.35)"
}
],
"flagged_pairs": [],
"worst_by_track": {
"PASS4_FLORES_FALLS": {
"partner": "PASS4_FLORES_ROAD",
"similarity": 0.0,
"matching_run_len": 0,
"transposition": null,
"time_ratio": null,
"flagged": false,
"license_kind": null,
"license_notes": 0,
"reading": "0 shared notes, similarity 0.000, -1.86 over chance; below the derived floor (>= 4 notes, similarity 0.313, excess +2.35)"
},
"PASS4_FLORES_ROAD": {
"partner": "PASS4_FLORES_FALLS",
"similarity": 0.0,
"matching_run_len": 0,
"transposition": null,
"time_ratio": null,
"flagged": false,
"license_kind": null,
"license_notes": 0,
"reading": "0 shared notes, similarity 0.000, -1.86 over chance; below the derived floor (>= 4 notes, similarity 0.313, excess +2.35)"
},
"PASS4_FLORES_ROUNDS": {
"partner": "PASS4_FLORES_FALLS",
"similarity": 0.0,
"matching_run_len": 0,
"transposition": null,
"time_ratio": null,
"flagged": false,
"license_kind": null,
"license_notes": 0,
"reading": "0 shared notes, similarity 0.000, -1.28 over chance; below the derived floor (>= 4 notes, similarity 0.313, excess +2.35)"
}
},
"summary": {
"max_similarity": 0.0,
"median_similarity": 0.0,
"set_distinctness": 1.0
},
"thresholds": {
"sim_threshold": 0.3132,
"min_excess_over_chance": 2.353,
"min_reuse_run_notes": 4,
"target_similarity": 0.0998,
"audio_lift_threshold": 0.5817,
"derived_from": "55,078 within-album sibling pairs over 21 albums and 1118 tracks, arm C, 2026-08-07; the 99.9th percentile of that distribution. The arm-A lift threshold is the p95 of 30 audio-decoded sibling pairs.",
"health": "the sibling tail contains REAL duplicates and reprises -- the strongest collision in the whole pool is a Tales of Phantasia cue against its own full-length version -- so this threshold sits ABOVE known deliberate recurrence and the instrument is conservative by construction"
},
"law": "No two tracks may share more melodic material than a declaration licenses: every track its own tune, and a reprise is design only where the plan names the partner and the node that earns it.",
"_honest_tier": "MEASURED INSTRUMENT"
}