File size: 1,183 Bytes
0f4ddd1 | 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 | # ChainFlow-VLA VLM Feature Cache
This dataset provides cached VLM hidden features and trajectory targets used by ChainFlow-VLA on NAVSIM.
## Dataset Structure
navtest/
navtest.tar.zst
checksums_navtest.sha256
trainval/
trainval_0000.tar.zst
trainval_0001.tar.zst
...
trainval_0023.tar.zst
checksums_trainval.sha256
trainval_logs.txt
The `trainval` split is sharded by NAVSIM log folders. Each shard is an independent `.tar.zst` archive.
After extraction, each token folder contains:
internvl_feature.gz
trajectory_target.gz
## Extract
Extract navtest:
tar --zstd -xf navtest/navtest.tar.zst
Extract all trainval shards:
for f in trainval/trainval_*.tar.zst; do
tar --zstd -xf "$f"
done
## Verify Checksums
Verify navtest:
cd navtest
sha256sum -c checksums_navtest.sha256
Verify trainval:
cd trainval
sha256sum -c checksums_trainval.sha256
## Notes
- `trainval` contains 24 independent shards.
- `navtest` is packed into a single archive.
- The archives use `zstd` compression. Please install `zstd` before extraction if your system does not support `tar --zstd`.
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