Update README.md

README.md

@@ -206,9 +206,40 @@ Once finished, the `./resources/tables/` the folder should look like this:
               └── WikiTableQuestions
 ```
 
-### License
+#### License
 
-This dataset is released under the [Creative Commons Attribution 4.0 International License (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/).
+TABLET's original contributions — the table image renderings, unified annotation format, task instructions, and accompanying metadata and scripts produced by the TABLET authors — are released under the [Creative Commons Attribution 4.0 International (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/) license, **except where the license of a source dataset requires otherwise** (see below).
+
+TABLET is a meta-dataset aggregating 14 existing table understanding datasets. Each TABLET subset remains subject to the license and terms of use of its original source. By downloading or using TABLET, you agree to comply with the license of every source dataset you use, in addition to the terms above. Where a source license conflicts with CC BY 4.0, the source license prevails for that subset.
+
+##### Source dataset licenses
+
+| Subset | Source license | Notes |
+|---|---|---|
+| [TURL](https://github.com/sunlab-osu/TURL) (Deng et al., 2020) | [Apache 2.0](https://github.com/sunlab-osu/TURL/blob/master/LICENSE) | Tables originate from Wikipedia (CC BY-SA 3.0). |
+| [ToTTo](https://github.com/google-research-datasets/ToTTo) (Parikh et al., 2020) | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) | ShareAlike: this subset is redistributed under CC BY-SA 3.0. |
+| [TabFact](https://github.com/wenhuchen/Table-Fact-Checking) (Chen et al., 2020a) | [MIT](https://github.com/wenhuchen/Table-Fact-Checking/blob/master/LICENSE) | Tables originate from Wikipedia (CC BY-SA 3.0). |
+| [WikiTableQuestions](https://github.com/ppasupat/WikiTableQuestions) (Pasupat & Liang, 2015) | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) | ShareAlike: this subset is redistributed under CC BY-SA 4.0. |
+| [HybridQA](https://github.com/wenhuchen/HybridQA) (Chen et al., 2020b) | [MIT](https://github.com/wenhuchen/HybridQA/blob/master/LICENSE) | Tables and passages originate from Wikipedia (CC BY-SA 3.0). |
+| [HiTab](https://github.com/microsoft/HiTab) (Cheng et al., 2022) | [C-UDA v1.0](https://github.com/microsoft/HiTab/blob/master/LICENSE) | Microsoft Computational Use of Data Agreement: data may be used and redistributed for computational purposes only, and any redistribution of this subset must include the C-UDA agreement. |
+| [PubTabNet](https://github.com/ibm-aur-nlp/PubTabNet) (Zhong et al., 2020) | [CDLA-Permissive 1.0](https://cdla.dev/permissive-1-0/) (annotations) | Table images are from the PubMed Central Open Access Subset and remain subject to the [PMC Open Access Subset terms of use](https://www.ncbi.nlm.nih.gov/pmc/tools/openftlist/); individual article licenses vary. |
+| [TabMWP](https://github.com/lupantech/PromptPG) (Lu et al., 2023) | [CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/) | **Non-commercial use only.** ShareAlike: this subset is redistributed under CC BY-NC-SA 4.0. |
+| [TAT-QA](https://github.com/NExTplusplus/TAT-QA) (Zhu et al., 2021) | [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) | — |
+| [InfoTabs](https://github.com/infotabs/infotabs) (Gupta et al., 2020) | [Apache 2.0](https://github.com/infotabs/infotabs/blob/master/LICENSE) | Tables originate from Wikipedia infoboxes (CC BY-SA 3.0). See the dataset's datasheet for non-academic usage. |
+| [WikiBIO](https://github.com/rlebret/wikipedia-biography-dataset) (Lebret et al., 2016) | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) | ShareAlike: this subset is redistributed under CC BY-SA 3.0. |
+| [FeTaQA](https://github.com/Yale-LILY/FeTaQA) (Nan et al., 2022) | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) | ShareAlike: this subset is redistributed under CC BY-SA 4.0. |
+| [MMTab](https://huggingface.co/datasets/SpursgoZmy/MMTab) (Zheng et al., 2024b) | [MIT](https://huggingface.co/datasets/SpursgoZmy/MMTab) | MMTab is itself constructed from 14 public table datasets; the licenses of its underlying sources also apply. Code repository is Apache 2.0. |
+| [DocStruct4M](https://huggingface.co/datasets/mPLUG/DocStruct4M) (Hu et al., 2024) | [Apache 2.0](https://huggingface.co/datasets/mPLUG/DocStruct4M) | Built from publicly available text-rich image datasets; the licenses of its underlying sources also apply. |
+
+##### Usage restrictions to be aware of
+
+- **Non-commercial subset.** The TabMWP subset is licensed CC BY-NC-SA 4.0 and **may not be used for commercial purposes**. If you require a fully commercial-compatible corpus, exclude this subset.
+- **ShareAlike subsets.** The subsets derived from ToTTo, WikiTableQuestions, FeTaQA, and WikiBIO carry ShareAlike terms: adaptations of these subsets must be distributed under the same (or a compatible) license, not plain CC BY.
+- **HiTab.** Use and redistribution of the HiTab subset is governed by the C-UDA v1.0; results of computational analysis (e.g., trained models) are not restricted, but the data itself may only be redistributed together with the C-UDA terms.
+- **PubTabNet images.** Images remain subject to the PMC Open Access Subset terms; check individual article licenses if you redistribute them outside a research context.
+- **Attribution.** Whatever subsets you use, please attribute the original datasets and cite the corresponding papers (see the Citation section) in addition to citing TABLET.
+
+License information above was collected from each project's official repository or dataset card. It is provided in good faith and does not constitute legal advice; if in doubt, consult the original license texts linked in the table.
 
 
 ### Citation