azithromycin/AnasElkhabbaz_sensor_dataset

Sensor Dataset TsFile

Apache TsFile conversion of AnasElkhabbaz/sensor_dataset, a LeRobot v2.1 three-channel resting muscle-sensor dataset.

Source and provenance

• Original dataset: https://huggingface.co/datasets/AnasElkhabbaz/sensor_dataset
• Original author/uploader: Anas elkhabbaz (AnasElkhabbaz)
• License: Apache-2.0
• LeRobot codebase version: v2.1; robot type: not specified
• Split: train (0:32); 32 episodes; 152,837 frame rows; 32 task labels; 32 Parquet shards
• Nominal sampling rate from meta/info.json: 3.33 Hz
• Source frame layout: data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.parquet

The task labels identify participant, recorded trial, and the Rest condition. Examples include Abdulrahman Khalfalla_Male_1_Rest, Abdulrahman Khalfalla_Male_2_Rest, Abdulrahman Khalfalla_Male_3_Rest, Abdulrahman Khalfalla_Male_4_Rest. The source card does not provide a paper, homepage, units for the sensor values, or a BibTeX citation.

Schema

Column	TsFile role	Type	Source / meaning
Time	TIME	INT64	round(timestamp * 1000) milliseconds; restarts at the first sample of each episode
episode_index	TAG	source INT64, stored as device/tag value	Original LeRobot episode index
task_index	TAG	source INT64, stored as device/tag value	Original LeRobot task index
frame_index	FIELD	INT64	Original frame number within the episode
sample_index	FIELD	INT64	Source index, renamed to avoid ambiguity
observation_state_0	FIELD	FLOAT	sensor.brachioradialis
observation_state_1	FIELD	FLOAT	sensor.flexor_carpi_radialis
observation_state_2	FIELD	FLOAT	sensor.flexor_carpi_ulnaris

observation.state[3] is flattened to scalar fields while preserving the source channel order. The source timestamp column is dropped after Time synthesis because it is redundant with Time / 1000 seconds. No rows, episodes, tasks, or sensor channels are dropped.

Storage profile

• Time: TS_2DIFF + LZ4
• FLOAT/DOUBLE: GORILLA + LZ4
• INT32/INT64: TS_2DIFF + LZ4
• BOOLEAN: RLE + LZ4 when present; this source has no BOOLEAN fields
• episode_index and task_index: TsFile table-model TAG/device mechanism

The physical TsFile schema was inspected after writing. The resulting TsFile is 16.83% of the combined source Parquet size.

Videos

The source meta/info.json declares the generic LeRobot template videos/chunk-{episode_chunk:03d}/{video_key}/episode_{episode_index:06d}.mp4, but it also reports total_videos: 0. The pinned repository tree contains no videos/ directory and no video files. Therefore there is no original video location to mirror, and this TsFile dataset contains no videos.

Minimal read example

from tsfile import TsFileReader

reader = TsFileReader("data/anaselkhabbaz_sensor_dataset.tsfile")
with reader.query_table(
    "anaselkhabbaz_sensor_dataset",
    ["episode_index", "task_index", "frame_index", "observation_state_0"],
    batch_size=4096,
) as result:
    batch = result.read_arrow_batch()
    print(batch.to_pandas().head())
reader.close()

Please cite the original Hugging Face dataset and Anas elkhabbaz.