aloha_mobile_shrimp

This dataset was converted from lerobot/aloha_mobile_shrimp to Apache TsFile format.

Dataset Description

The original dataset was created using LeRobot.

• Homepage: More Information Needed
• Paper: More Information Needed
• License: apache-2.0

Source Dataset

• Original dataset: lerobot/aloha_mobile_shrimp
• Source scale: 18 episodes, 67,500 frames, 50 fps, 1 task.
• Source robot type: aloha.
• Source data path: data/chunk-{chunk_index:03d}/file-{file_index:03d}.parquet
• Source video path: videos/{video_key}/chunk-{chunk_index:03d}/file-{file_index:03d}.mp4

TsFile Conversion

The numeric robot state/action/time/task data was converted into one TsFile:

data/aloha_mobile_shrimp.tsfile

Conversion details:

• All 18 source episodes are stored in one TsFile table named aloha_mobile_shrimp.
• episode_index and task_index are TsFile TAG columns. Query a single episode with WHERE episode_index=N.
• Time = round(timestamp * 1000) in milliseconds. The source timestamp column is not retained because it equals Time / 1000 seconds.
• frame_index is kept. Source index is renamed to sample_index. Source next.done is renamed to next_done.
• Vector columns are flattened by preserving the source column name, replacing . with _, and appending the element index.
• Values from flattened vector columns are stored as single-precision FLOAT.

Flattened vector features:

• observation.state[14] -> observation_state_0..observation_state_13
• observation.effort[14] -> observation_effort_0..observation_effort_13
• action[14] -> action_0..action_13

Videos

Videos are not included in this TsFile repository. They remain in the original dataset under videos/.

The mirrored meta/info.json records the original video path and includes a tsfile_conversion section describing the converted schema, row count, tag columns, dropped timestamp column, omitted video features, and time mapping.