| ---
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| license: apache-2.0
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| authors:
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| - Quinten Noens
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| task_categories:
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| - robotics
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| tags:
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| - tsfile
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| - timeseries
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| - tabular
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| - robotics
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| - lerobot
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| modality:
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| - timeseries
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| - tabular
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| pretty_name: Block2Target TsFile
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| configs:
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| - config_name: default
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| data_files:
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| - split: train
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| path: data/qnoens_block2target.tsfile
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| size_categories:
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| - 10K<n<100K
|
| ---
|
|
|
| # Block2Target TsFile
|
|
|
| Apache TsFile conversion of [qnoens/block2target](https://huggingface.co/datasets/qnoens/block2target), a LeRobot v2.1 robotics dataset.
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|
|
| ## Source and provenance
|
|
|
| - Original dataset: [qnoens/block2target](https://huggingface.co/datasets/qnoens/block2target)
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| - Inspected source revision: `70f0d984883d25eba7837c258c18d721f61315fb`
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| - Original author/uploader: [Quinten Noens (`qnoens`)](https://huggingface.co/qnoens)
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| - License: Apache-2.0
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| - Tasks: move a block to the blue rectangle, green circle, pink pentagon, or orange triangle
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| - Split: `train: 0:200`; sampling rate: 10 fps
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| - Coverage: 200 episodes, 23,071 frame rows, 4 tasks, 200 Parquet shards
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| - Source frame layout: `data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.parquet`
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|
|
| The source card provides no paper, homepage, or completed BibTeX citation.
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|
|
| ## Converted files
|
|
|
| - TsFile: `data/qnoens_block2target.tsfile` (2,437,996 bytes)
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| - Table: `qnoens_block2target`; rows: 23,071; devices/episodes: 200
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| - Metadata: source `meta/` is mirrored, with `meta/info.json` updated for the TsFile artifact.
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|
|
| ## Schema and conversion
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|
|
| `Time = round(timestamp * 1000)` as INT64 milliseconds, restarting at zero per episode. Source `timestamp` is dropped as redundant with `Time / 1000`. `frame_index` is retained and `index` is renamed to `sample_index`.
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|
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| TAG/device columns: `episode_index`, `task_index`.
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|
|
| FIELD columns: `next_reward` FLOAT, `next_success` BOOLEAN, `seed`/`frame_index`/`sample_index` INT64, `gripper_state` FLOAT; plus flattened `state[7]`, `robot_pose[6]`, `joints[6]`, and `action[7]` scalar FLOAT fields. No rows or numeric vector dimensions are dropped.
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|
|
| Actual storage profile: Time `TS_2DIFF + LZ4`; FLOAT/DOUBLE `GORILLA + LZ4`; INT32/INT64 `TS_2DIFF + LZ4`; BOOLEAN `RLE + LZ4`; TAGs use TsFile table-model device/tag storage.
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|
|
| ## Videos (not included)
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|
|
| The original repository contains 800 MP4 files (200 per stream; 367,041,730 bytes) under [videos/](https://huggingface.co/datasets/qnoens/block2target/tree/70f0d984883d25eba7837c258c18d721f61315fb/videos): `videos/chunk-{episode_chunk:03d}/{video_key}/episode_{episode_index:06d}.mp4`. Streams are `scene_image`, `scene_image_original`, `wrist_image`, and `wrist_image_original`. Videos are not copied or uploaded; `episode_index` and `frame_index` preserve frame alignment.
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|
|
| ## Validation
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|
|
| Local validation: **PASS**. Source/staged/TsFile rows: 23,071 / 23,071 / 23,071; duplicate device-Time keys: 0; monotonicity violations: 0; TsFile/source Parquet size ratio: 53.53%. The Apache TsFile Java reader queried every row and inspected actual codec metadata.
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|
|
| ## Minimal read example
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|
|
| ```python
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| from tsfile import TsFileReader
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| reader = TsFileReader("data/qnoens_block2target.tsfile")
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| with reader.query_table("qnoens_block2target", ["episode_index", "task_index", "Time", "frame_index", "next_success", "action_0"], batch_size=65536) as result:
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| print(result.read_arrow_batch().to_pandas().head())
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| reader.close()
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| ```
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|
|
| Please cite the original Hugging Face dataset and Quinten Noens (`qnoens`).
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|
|
