Add TsFile conversion preserving original repository structure

README.md

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+---
+license: unknown
+task_categories:
+- robotics
+- time-series-forecasting
+language:
+- en
+tags:
+- lerobot
+- robotics
+- imitation-learning
+- action-state
+- tsfile
+pretty_name: koch_test TsFile
+---
+
+# koch_test
+
+This repository contains a TsFile conversion of the original Hugging Face
+dataset [`MoofireX/koch_test`](https://huggingface.co/datasets/MoofireX/koch_test).
+
+## Source Dataset
+
+The source repository contains one Parquet split and LeRobot metadata files:
+
+```text
+data/train-00000-of-00001.parquet
+meta_data/episode_data_index.safetensors
+meta_data/info.json
+meta_data/stats.safetensors
+```
+
+The converted repository keeps the same top-level structure:
+
+```text
+data/train.tsfile
+meta_data/episode_data_index.safetensors
+meta_data/info.json
+meta_data/stats.safetensors
+```
+
+## Source Schema
+
+The source Parquet split has 2,755 rows and 7 columns:
+
+| Column | Source type | Conversion |
+|---|---|---|
+| `observation.state` | fixed-size list float[6] | flattened to `state_0` ... `state_5` |
+| `action` | fixed-size list float[6] | flattened to `action_0` ... `action_5` |
+| `episode_index` | int64 | FIELD |
+| `frame_index` | int64 | FIELD |
+| `timestamp` | float | renamed to `episode_timestamp_s` FIELD |
+| `next.done` | bool | renamed to `next_done` FIELD |
+| `index` | int64 | renamed to `sample_index` FIELD |
+
+## Conversion Notes
+
+- Source format converted to TsFile: lowercase `data/train-00000-of-00001.parquet`.
+- Converted format: TsFile table model.
+- Output file: `data/train.tsfile`.
+- Table name: `koch_test`.
+- TAG column: `episode_id`, synthesized from `episode_index`.
+- Time column: synthesized from `frame_index * 100 ms`.
+- The original `timestamp` value is preserved as `episode_timestamp_s`.
+- `observation.state` and `action` are not dropped semantically; each 6-element
+  vector is expanded to scalar fields because TsFile import requires scalar
+  columns.
+- Row count is preserved: 2,755 source rows -> 2,755 TsFile rows.
+
+## Metadata
+
+The source `meta_data/info.json` reports:
+
+```json
+{
+  "codebase_version": "v1.6",
+  "fps": 30,
+  "video": true,
+  "encoding": {
+    "vcodec": "libsvtav1",
+    "pix_fmt": "yuv420p",
+    "g": 2,
+    "crf": 30
+  }
+}
+```
+
+The `meta_data/` files are mirrored unchanged from the source repository for
+traceability. The TsFile conversion only uses the Parquet split.
+
+## Citation
+
+Please cite the original dataset:
+
+```bibtex
+@dataset{koch_test,
+  author = {MoofireX},
+  title = {koch_test},
+  publisher = {Hugging Face},
+  url = {https://huggingface.co/datasets/MoofireX/koch_test}
+}
+```

meta_data/episode_data_index.safetensors

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+version https://git-lfs.github.com/spec/v1
+oid sha256:6eb05d840de327d278608b4863fd543bfc033d0c1e2cfd862df3c96551f67ea2
+size 288

meta_data/info.json

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+{
+    "codebase_version": "v1.6",
+    "fps": 30,
+    "video": true,
+    "encoding": {
+        "vcodec": "libsvtav1",
+        "pix_fmt": "yuv420p",
+        "g": 2,
+        "crf": 30
+    }
+}

meta_data/stats.safetensors

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3579f7e79af71d7092c11ca29f8c84238a8b6115bf9c3684b4a3be4625176307
+size 2240