| # Changelog |
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| ## v1.0 update - 2026-08 |
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| - Added the complete 9-bin event voxel representation. |
| - Normalized payload directories to `data_5bin/` and `data_9bin/`. |
| - Preserved the canonical 3,263-video membership and 2,316/947 split for both variants. |
| - Added representation-specific metadata under `metadata/5bin/` and `metadata/9bin/`. |
| - Generalized timing and format documentation for bin count `B` in `{5, 9}`. |
| - Verified 219 shards per representation and 438 total payload shards. |
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| Canonical HDF5 payload sizes: |
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| - 5-bin: 4,355,745,895,245 bytes; |
| - 9-bin: 4,214,122,096,103 bytes. |
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| ## v1.0 - 2026-07-14 |
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| Initial public 5-bin release. |
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| - Large: 3,263 videos and 106.941600381 hours. |
| - Medium: 1,537 videos and 50.000000128 hours. |
| - Small: 667 videos and 20.000000374 hours. |
| - 200 verified action classes. |
| - Large train/validation split: 2,316 / 947. |
| - HDF5 datasets: `events`, `voxel_event_start`, `voxel_event_count`. |
| - Canonical 5-bin HDF5 size: 4,355,745,895,245 bytes. |
| - Final integrity audit: PASS. |
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| The initial small-file update added filtered ActivityNet Captions annotations, |
| ActivityNet v1.3 actions, derived caption/action alignment, source timing |
| metadata, and 219 tar-shard checksums. |
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