| # EventActivityNet v1.0 Release Notes |
|
|
| ## Release Status |
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|
| EventActivityNet v1.0 provides complete 5-bin and 9-bin generated event voxel |
| representations over the same canonical 3,263-video set. |
|
|
| ## Representation Summary |
|
|
| | Representation | Path | Train / validation | Shards | Canonical HDF5 bytes | |
| |---|---|---:|---:|---:| |
| | 5-bin | `data_5bin/` | 2,316 / 947 | 219 | 4,355,745,895,245 | |
| | 9-bin | `data_9bin/` | 2,316 / 947 | 219 | 4,214,122,096,103 | |
|
|
| Both use 157 train and 62 validation tar shards. The repository contains |
| approximately 8.57 TB of payload overall. The variants are alternative |
| temporal groupings; neither is claimed to be inherently superior. |
|
|
| ## 2026-08 Update |
|
|
| - Added the complete 9-bin representation. |
| - Normalized public representation directories to `data_5bin/` and `data_9bin/`. |
| - Retained the same canonical 3,263-video train/validation membership and shared annotations for both variants. |
| - Separated shard manifests, summaries, and checksums under `metadata/5bin/` and `metadata/9bin/`. |
| - Generalized source timing metadata to describe both representations without changing canonical source values. |
|
|
| ## Integrity |
|
|
| Final audits confirmed: |
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| - 3,263 valid HDF5 files per representation; |
| - zero unreadable or structurally invalid production files; |
| - exact `events`, `voxel_event_start`, and `voxel_event_count` datasets; |
| - `num_bins=5` or `num_bins=9` matching each representation; |
| - 438 expected remote tar shards with exact recorded sizes and checksums; |
| - no tar payload under the former `data/` namespace. |
|
|
| ## Scale Summary |
|
|
| | Scale | Videos | Hours | Train | Validation | Classes | Event-friendly | |
| |---|---:|---:|---:|---:|---:|---:| |
| | Large | 3,263 | 106.94 | 2,316 | 947 | 200 | 65.31% | |
| | Medium | 1,537 | 50.00 | 1,074 | 463 | 200 | 64.80% | |
| | Small | 667 | 20.00 | 473 | 194 | 200 | 64.62% | |
|
|
| ## Caveats |
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| - These are generated event voxel tensors, not native event-camera recordings. |
| - The verified release contains 200 action classes. |
| - The historical 107.3-hour Large figure is approximate; the verified duration is 106.94 hours. |
| - Medium and Small are deterministic nested v1.0 scales. |
| - Source FPS varies by video and timing uses released rational FPS metadata. |
|
|
| Changing the original 5-bin directory from `data/` to `data_5bin/` changes |
| repository URLs used by older download scripts. Tar filenames and content |
| checksums are unchanged. |
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