Add validated TsFile conversion from grboguz/test_lfs

.gitattributes

@@ -58,3 +58,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+data/grboguz_test_lfs_train.tsfile filter=lfs diff=lfs merge=lfs -text

README.md

@@ -1,3 +1,156 @@
----
-license: apache-2.0
----
+---
+license: apache-2.0
+authors:
+- grboguz
+task_categories:
+- robotics
+tags:
+- tsfile
+- timeseries
+- tabular
+- robotics
+- lerobot
+- sentinel_v2
+- manipulation
+- tutorial
+modality:
+- timeseries
+- tabular
+pretty_name: grboguz test_lfs TsFile
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/grboguz_test_lfs_train.tsfile
+size_categories:
+- 10K<n<100K
+---
+
+# grboguz/test_lfs TsFile
+
+This dataset is an Apache TsFile conversion of
+[`grboguz/test_lfs`](https://huggingface.co/datasets/grboguz/test_lfs), a LeRobot v2.1 sentinel_v2 robot-manipulation dataset
+containing demonstrations for the task "pick the green cube."
+
+Modalities: Time-series, Tabular. The converted repository contains numeric
+robot states, actions, frame timing, and episode/task tags. The two camera
+streams remain in the original Hugging Face dataset and are linked below.
+
+## Source Dataset and Provenance
+
+- Original dataset: [`grboguz/test_lfs`](https://huggingface.co/datasets/grboguz/test_lfs)
+- Pinned source revision: [`main`](https://huggingface.co/datasets/grboguz/test_lfs/tree/main)
+- Original repository creator and uploader: [grboguz](https://huggingface.co/grboguz)
+- License: Apache-2.0
+- Robot type: `sentinel_v2`
+- LeRobot codebase version: `v2.1`
+- Task: `pick the green cube` (`task_index = 0`)
+- Split: `train`
+- Sampling rate: 15 fps
+- Scale: 210 episodes, 72,677 frame rows, 1 task, 210 source Parquet files, 420 source videos
+- Source frame layout: `data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.parquet`
+- Source video layout: `videos/chunk-{episode_chunk:03d}/{video_key}/episode_{episode_index:06d}.mp4`
+
+The source dataset card provides no paper or completed citation. The Hugging
+Face repository history attributes the source upload to the `grboguz` account.
+
+## Converted Files
+
+- TsFile: `data/grboguz_test_lfs_train.tsfile`
+- Table: `grboguz_test_lfs_train`
+- Rows: 72,677
+- Episodes/devices: 210
+- TsFile size: 1.36 MiB
+- Time precision: milliseconds
+- Metadata: `meta/` is mirrored from the source, with `meta/info.json` rewritten to describe the TsFile artifact and conversion mapping.
+
+## TsFile Schema
+
+`Time` is an INT64 millisecond timestamp computed as
+`round(timestamp * 1000)` and restarts for each episode.
+
+TAG columns (stored as TsFile STRING tags while preserving the original source
+dtype in conversion metadata):
+
+- `episode_index`
+- `task_index`
+
+FIELD columns:
+
+- `frame_index`
+- `sample_index`
+- `observation_state_0`
+- `observation_state_1`
+- `observation_state_2`
+- `action_0`
+- `action_1`
+- `action_2`
+- `action_3`
+
+Flattened vector groups:
+
+- `observation.state` -> `observation_state_0` ... `observation_state_2` (3 FLOAT fields)
+- `action` -> `action_0` ... `action_3` (4 FLOAT fields)
+
+## Conversion Notes
+
+- The shared config-driven `lerobot` converter is used; the included
+  `convert_grboguz_test_lfs.py` is the dataset-specific local entry point.
+- The train split is merged into one table-model TsFile. Filter by
+  `episode_index` and `task_index` to select an episode or task.
+- Storage profile: Time uses `TS_2DIFF + LZ4`; FLOAT/DOUBLE use
+  `GORILLA + LZ4`; INT32/INT64 use `TS_2DIFF + LZ4`; BOOLEAN uses
+  `RLE + LZ4`. The `episode_index` and `task_index` columns remain TsFile
+  table-model TAG/device columns.
+- `action[4]` and `observation.state[3]` are flattened to scalar FLOAT fields;
+  the full source prefix is retained and `.` is replaced with `_`.
+- The source `timestamp` column is dropped after `Time` synthesis because it is
+  redundant with `Time / 1000` seconds.
+- The source `index` column is retained as `sample_index`; `frame_index` is
+  retained unchanged.
+- All 72,677 source rows and all 7 action/state dimensions are retained.
+
+## Videos
+
+Videos are not duplicated in this converted repository. The source contains
+two frame-aligned camera streams, each with 210 per-episode MP4 files:
+
+- [`observation.image`](https://huggingface.co/datasets/grboguz/test_lfs/tree/main/videos/chunk-000/observation.image) - 210 per-episode MP4 files
+- [`observation.wrist_image`](https://huggingface.co/datasets/grboguz/test_lfs/tree/main/videos/chunk-000/observation.wrist_image) - 210 per-episode MP4 files
+
+The numeric TsFile rows remain aligned with the original videos through
+`episode_index`, `frame_index`, and the source per-episode metadata.
+
+## Validation
+
+The generated TsFile is checked for successful tool completion, non-zero size,
+table schema, metadata row-count equality with the staged Parquet, and a query
+readback sample. See `VALIDATION.md` and `validation_report.json`.
+
+## Minimal Read Example
+
+```python
+from tsfile import TsFileReader
+
+reader = TsFileReader("data/grboguz_test_lfs_train.tsfile")
+table_name = "grboguz_test_lfs_train"
+columns = [
+    "episode_index",
+    "task_index",
+    "frame_index",
+    "sample_index",
+    "action_0",
+    "observation_state_0",
+]
+
+with reader.query_table(table_name, columns, batch_size=65536) as result:
+    batch = result.read_arrow_batch()
+    print(batch.to_pandas().head())
+reader.close()
+```
+
+## Citation
+
+The source dataset card provides no paper or completed citation. Cite the
+original Hugging Face dataset and the `grboguz` account when using this
+converted artifact.

data/grboguz_test_lfs_train.tsfile

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:99cdbc5090b09d47e84b45de83356e8517662332b168ad75570826d552441b66
+size 1424914

meta/episodes.jsonl

@@ -0,0 +1,210 @@
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meta/info.json

@@ -0,0 +1,230 @@
+{
+  "codebase_version": "v2.1",
+  "robot_type": "sentinel_v2",
+  "total_episodes": 210,
+  "total_frames": 72677,
+  "total_tasks": 1,
+  "total_videos": 420,
+  "total_chunks": 1,
+  "chunks_size": 1000,
+  "fps": 15,
+  "splits": {
+    "train": "0:210"
+  },
+  "data_path": "data/grboguz_test_lfs_train.tsfile",
+  "features": {
+    "Time": {
+      "dtype": "int64",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "TIME",
+      "unit": "ms"
+    },
+    "episode_index": {
+      "dtype": "string",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "TAG",
+      "source_dtype": "int64"
+    },
+    "task_index": {
+      "dtype": "string",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "TAG",
+      "source_dtype": "int64"
+    },
+    "frame_index": {
+      "dtype": "int64",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "FIELD"
+    },
+    "sample_index": {
+      "dtype": "int64",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "FIELD"
+    },
+    "observation_state_0": {
+      "dtype": "float32",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "FIELD"
+    },
+    "observation_state_1": {
+      "dtype": "float32",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "FIELD"
+    },
+    "observation_state_2": {
+      "dtype": "float32",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "FIELD"
+    },
+    "action_0": {
+      "dtype": "float32",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "FIELD"
+    },
+    "action_1": {
+      "dtype": "float32",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "FIELD"
+    },
+    "action_2": {
+      "dtype": "float32",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "FIELD"
+    },
+    "action_3": {
+      "dtype": "float32",
+      "shape": [
+        1
+      ],
+      "tsfile_role": "FIELD"
+    }
+  },
+  "video_path_original": "videos/chunk-{episode_chunk:03d}/{video_key}/episode_{episode_index:06d}.mp4",
+  "tsfile_conversion": {
+    "source_dataset": "grboguz/test_lfs",
+    "source_data_path": "data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.parquet",
+    "converted_data_path": "data/grboguz_test_lfs_train.tsfile",
+    "table_name": "grboguz_test_lfs_train",
+    "granularity": "per_split",
+    "time_precision": "ms",
+    "time_mapping": {
+      "source": "timestamp",
+      "fps": 15,
+      "unit": "milliseconds"
+    },
+    "tag_columns": [
+      "episode_index",
+      "task_index"
+    ],
+    "row_count": 72677,
+    "feature_source": "features describe the converted TsFile schema",
+    "flattened_features": {
+      "observation.state": [
+        "observation_state_0",
+        "observation_state_1",
+        "observation_state_2"
+      ],
+      "action": [
+        "action_0",
+        "action_1",
+        "action_2",
+        "action_3"
+      ]
+    },
+    "renamed_features": {
+      "index": "sample_index"
+    },
+    "dropped_features": [
+      "timestamp"
+    ],
+    "omitted_features": [
+      "observation.image",
+      "observation.wrist_image"
+    ],
+    "original_video_path": "videos/chunk-{episode_chunk:03d}/{video_key}/episode_{episode_index:06d}.mp4",
+    "original_video_features": {
+      "observation.image": {
+        "dtype": "video",
+        "shape": [
+          3,
+          256,
+          256
+        ],
+        "names": [
+          "channels",
+          "height",
+          "width"
+        ],
+        "info": {
+          "video.height": 256,
+          "video.width": 256,
+          "video.codec": "av1",
+          "video.pix_fmt": "yuv420p",
+          "video.is_depth_map": false,
+          "video.fps": 15,
+          "video.channels": 3,
+          "has_audio": false
+        }
+      },
+      "observation.wrist_image": {
+        "dtype": "video",
+        "shape": [
+          3,
+          256,
+          256
+        ],
+        "names": [
+          "channels",
+          "height",
+          "width"
+        ],
+        "info": {
+          "video.height": 256,
+          "video.width": 256,
+          "video.codec": "av1",
+          "video.pix_fmt": "yuv420p",
+          "video.is_depth_map": false,
+          "video.fps": 15,
+          "video.channels": 3,
+          "has_audio": false
+        }
+      }
+    },
+    "original_video_source": "https://huggingface.co/datasets/grboguz/test_lfs/tree/main/videos",
+    "video_policy": "Videos are not uploaded to this repository; use the original HuggingFace dataset videos.",
+    "source_revision": "main",
+    "source_author": {
+      "name": "grboguz",
+      "huggingface_user": "grboguz",
+      "url": "https://huggingface.co/grboguz"
+    },
+    "task_index_mapping": {
+      "0": "pick the green cube"
+    },
+    "source_video_file_count": 420,
+    "source_video_files_per_stream": 210,
+    "source_video_bytes": null,
+    "source_video_streams": [
+      "observation.image",
+      "observation.wrist_image"
+    ],
+    "storage_profile": {
+      "time_encoding": "TS_2DIFF",
+      "time_compression": "LZ4",
+      "float_encoding": "GORILLA",
+      "float_compression": "LZ4",
+      "double_encoding": "GORILLA",
+      "double_compression": "LZ4",
+      "int32_encoding": "TS_2DIFF",
+      "int32_compression": "LZ4",
+      "int64_encoding": "TS_2DIFF",
+      "int64_compression": "LZ4",
+      "boolean_encoding": "RLE",
+      "boolean_compression": "LZ4",
+      "tag_storage": "TsFile table-model device/tag columns"
+    },
+    "frame_video_alignment": "episode_index and frame_index preserve alignment with the original per-episode MP4 files and source episode metadata."
+  }
+}

meta/tasks.jsonl

@@ -0,0 +1 @@
+{"task_index": 0, "task": "pick the green cube"}