perf: widen powerset window hop to 2.0s (~2.5× faster segmentation) - #83
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Halves the number of overlapping 10-s segmentation windows per file, cutting segmentation time by 2.2-2.7x with no DER regression (pipeline v2 + VBx, CPU provider): - AMI-test 16 meetings: DER 17.66 -> 15.71 (collar 0.25, micro), segmentation 551 -> 207 s, RTFx 31 -> 68 - VoxConverse-dev 216 files: DER 7.90 -> 7.70, segmentation 976 -> 453 s, RTFx 38 -> 56 - AMI EN2002a single meeting: DER 24.76 -> 24.27 Updates the PowersetConfig default and the shipped manifest geometry (both powerset_fp32 and powerset_int8 entries), re-measures the ami_test DER baseline, and records the fresh benchmark artifacts. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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perf: widen powerset window hop to 2.0s (~2.5× faster segmentation)
ekhodzitsky
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Jul 31, 2026
perf: widen powerset window hop to 2.0s (~2.5× faster segmentation)
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Что
Дефолтный hop powerset-окон 1.0 с → 2.0 с (перекрытие 90% → 80%): вдвое меньше 10-секундных окон на файл при той же агрегации. Затронуты дефолт
PowersetConfig.hop_secs, обе записи вsrc/models/manifest.toml, пересчитан DER-бейзлайнami_test, добавлены бенч-артефакты вbenchmarks/results/powerset-hop2-2026-07-30/.Валидация (pipeline v2 + VBx, CPU provider, полные корпуса)
DER не деградировал ни на одном корпусе — на AMI даже −1.95 п.п. (меньше избыточного перекрытия → чище агрегированные постериоры).
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