The dataset viewer is not available for this subset.
Exception: SplitsNotFoundError
Message: The split names could not be parsed from the dataset config.
Traceback: Traceback (most recent call last):
File "/usr/local/lib/python3.14/site-packages/datasets/inspect.py", line 286, in get_dataset_config_info
for split_generator in builder._split_generators(
~~~~~~~~~~~~~~~~~~~~~~~~~^
StreamingDownloadManager(base_path=builder.base_path, download_config=download_config)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/webdataset/webdataset.py", line 84, in _split_generators
raise ValueError(
...<2 lines>...
)
ValueError: The TAR archives of the dataset should be in WebDataset format, but the files in the archive don't share the same prefix or the same types.
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/src/services/worker/src/worker/job_runners/config/split_names.py", line 68, in compute_split_names_from_streaming_response
for split in get_dataset_split_names(
~~~~~~~~~~~~~~~~~~~~~~~^
path=dataset,
^^^^^^^^^^^^^
config_name=config,
^^^^^^^^^^^^^^^^^^^
token=hf_token,
^^^^^^^^^^^^^^^
)
^
File "/usr/local/lib/python3.14/site-packages/datasets/inspect.py", line 340, in get_dataset_split_names
info = get_dataset_config_info(
path,
...<6 lines>...
**config_kwargs,
)
File "/usr/local/lib/python3.14/site-packages/datasets/inspect.py", line 291, in get_dataset_config_info
raise SplitsNotFoundError("The split names could not be parsed from the dataset config.") from err
datasets.inspect.SplitsNotFoundError: The split names could not be parsed from the dataset config.Need help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
TeleArms data v7, Front To Back Cube Line, rig/DR v8: tar shards
A LeRobot v3.0 dataset of simulated bimanual YAM teleoperation demos, packed into ~1 GB uncompressed tar shards: 38,216 episodes from 19,108 demos with 2 renders each, 32,604,830 frames at 30 Hz.
Data v7: TeleArms v6's rules (J3 at most 180 degrees, jitter removed, actions capped), pauses cut with the careful rule, demos where a held cube fell out of the gripper from 1 cm or higher removed, failed grabs and on-table slips marked in the loss_mask column (0 = do not train that action; training code that ignores the column trains on everything). Trajectories, cleaning records and game records: albagon/telearms-front-to-back-datav7. Rig/DR v8: MolmoSpaces lighting, no table lip, rig hardware and rail hidden, arms on the table as in the recorded demos.
The mask column is loss_mask. The first upload (8 Nov 2026) called it action_loss_mask, which LeRobot reads as a second action output, so use this revision or later.
manifest.json lists every shard's sha256 and the hashes of meta/info.json and meta/stats.json.
hf download albagon/telearms-front-to-back-datav7-rigdrv8 --repo-type dataset --local-dir shards
mkdir dataset && ls shards/dataset-*.tar | xargs -P 8 -I{} tar -xf {} -C dataset
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