| --- |
| license: cc-by-4.0 |
| task_categories: |
| - time-series-forecasting |
| tags: |
| - tsfile |
| - timeseries |
| - time-series |
| - classification |
| pretty_name: Handwriting (TsFile) |
| size_categories: |
| - 10K<n<100K |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: Handwriting_train.tsfile |
| - split: test |
| path: Handwriting_test.tsfile |
| - split: train_labels |
| path: labels/Handwriting_train_labels.csv |
| - split: test_labels |
| path: labels/Handwriting_test_labels.csv |
| --- |
| |
| # Handwriting (TsFile) |
|
|
| Apache TsFile version of the `Handwriting` UEA classification subset of |
| [`thuml/Time-Series-Library`](https://huggingface.co/datasets/thuml/Time-Series-Library). |
|
|
| ## Overview |
|
|
| Accelerometer traces of writing the 26 letters; classify the letter. |
|
|
| - **Train samples:** 150. |
| - **Test samples:** 850. |
| - **Dimensions (channels):** 3. |
| - **Series length:** 152. |
| - **Classes:** 26. |
|
|
| Each sample is an independent multivariate series. TRAIN and TEST are stored as |
| two separate TsFiles (`Handwriting_train.tsfile` / `Handwriting_test.tsfile`). |
| Class labels are stored as separate CSV sidecar files in `labels/`. |
|
|
| ## Schema (TsFile structure) |
|
|
| - **sample_index** (TAG) - one device per sample. Query one sample with |
| `WHERE sample_index=0`. |
| - **Time** (INT64) - within-sample position (0..151), a frame index rather than |
| a wall-clock timestamp. |
| - **dim_0..dim_2** (FIELD, FLOAT) - the 3 channels at each position. |
| - **Labels** (CSV sidecar) - `labels/Handwriting_train_labels.csv` and |
| `labels/Handwriting_test_labels.csv` contain `sample_index,class_label`, one |
| row per sample. |
|
|
| Converted from the sktime `.ts` format. No dimensions, time points, samples, or |
| labels are dropped. Labels are not stored inside the TsFile feature tables. |
|
|
| ## Usage |
|
|
| Read the `.tsfile` files with the Apache TsFile Java or Python SDK. Join labels |
| from the sidecar CSV files by `sample_index` within the matching split. |
|
|
| ## Source & license |
|
|
| - Original dataset: https://huggingface.co/datasets/thuml/Time-Series-Library (subset `Handwriting`) |
| - Author / publisher: thuml (Tsinghua University) |
| - Paper: https://arxiv.org/abs/2407.13278 |
| - License: CC BY 4.0 |
|
|
