File size: 2,381 Bytes
3d613ee 3b61cbc 3d613ee 3b61cbc 3d613ee 3b61cbc 3d613ee 3b61cbc 3d613ee 3b61cbc 3d613ee 3b61cbc 3d613ee 3b61cbc 3d613ee 3b61cbc 3d613ee 3b61cbc 3d613ee 3b61cbc 3d613ee 3b61cbc d6582a4 3b61cbc | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | # EventActivityNet v1.0 Release Notes
## Release Status
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:
- 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
- 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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