| --- |
| license: apache-2.0 |
| task_categories: |
| - robotics |
| tags: |
| - LeRobot |
| - TsFile |
| - time-series |
| - robotics |
| modality: |
| - timeseries |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: data/eval1_fixed_all_v2.tsfile |
| --- |
| |
| # eval1_fixed_all_v2 |
| |
| This dataset is converted from |
| [`robot-learning-group47/eval1_fixed_all_v2`](https://huggingface.co/datasets/robot-learning-group47/eval1_fixed_all_v2) |
| to Apache TsFile format. |
| |
| Modalities: Time-series. The original dataset also contains a front-camera |
| video stream, which remains in the source Hugging Face dataset and is not |
| included in this converted repository. |
| |
| ## Source Dataset |
| |
| - Original dataset: [`robot-learning-group47/eval1_fixed_all_v2`](https://huggingface.co/datasets/robot-learning-group47/eval1_fixed_all_v2) |
| - Format: LeRobot v3.0 |
| - Robot type: `so_follower` |
| - License: `apache-2.0` |
| - Scale: 61 episodes, 10,980 frames, 3 tasks, 15 fps |
| - Original data path: `data/chunk-{chunk_index:03d}/file-{file_index:03d}.parquet` |
| - Original video path: `videos/{video_key}/chunk-{chunk_index:03d}/file-{file_index:03d}.mp4` |
|
|
| ## Converted Files |
|
|
| - TsFile data: `data/eval1_fixed_all_v2.tsfile` |
| - Mirrored metadata: `meta/` |
| - Rows in TsFile: 10,980 |
| - Time precision: milliseconds |
|
|
| ## Schema |
|
|
| `Time` is synthesized as `round(timestamp * 1000)` and restarts per episode. |
|
|
| TAG columns: |
|
|
| - `episode_index` |
| - `task_index` |
|
|
| FIELD columns: |
|
|
| - `frame_index` |
| - `sample_index` renamed from source `index` |
| - `action_0` through `action_5`, flattened from `action[6]` |
| - `observation_state_0` through `observation_state_5`, flattened from `observation.state[6]` |
|
|
| Flattened vector values are stored as single-precision FLOAT fields. |
|
|
| ## Conversion Notes |
|
|
| - The source `timestamp` column is not retained as a separate field because it |
| is redundant with `Time / 1000` seconds. |
| - The source front-camera video stream `observation.images.front` is not |
| uploaded here. Use the original dataset for videos: |
| https://huggingface.co/datasets/robot-learning-group47/eval1_fixed_all_v2/tree/main/videos |
| - `meta/info.json` is mirrored from the source and updated to describe the |
| converted TsFile schema, original video path, row count, TAG columns, flattened |
| features, and video policy. |
| - Aside from the redundant `timestamp` field and omitted video stream, no rows |
| or numeric time-series fields are intentionally dropped. |
| |
| ## Read Example |
| |
| ```python |
| # Read data/eval1_fixed_all_v2.tsfile with the Apache TsFile Java/Python SDK. |
| # Query one episode with a predicate such as: |
| # WHERE episode_index = 0 |
| ``` |
| |
