lick rights section

README.md

@@ -117,11 +117,21 @@ The package contains this card, `.gitattributes`, [SHA256SUMS](SHA256SUMS), two
 
 ## Rights, limitations and citation
 
-This topic-modeling version is published with permission from Dongqi Liu, one of the original SciNews authors. Please cite the original SciNews publication using the full BibTeX entry below when using this dataset.
+### Publication permission and source notices
 
-The [official dataset card](https://huggingface.co/datasets/dongqi-me/SciNews) declares CC BY 4.0 and specifies non-commercial academic research or educational use in its access terms. These source notices are preserved in [SOURCE_README.md](SOURCE_README.md). Permission to publish this preparation does not replace the stated source terms or third-party rights in the news articles. The original source repository remains gated; separate approval is needed to download its files for a rebuild.
+This topic-modeling version is published with permission from Dongqi Liu, one of the original SciNews authors.
 
-Source selection, historical coverage, class imbalance and automatic preprocessing affect the labels and topic distributions. Family grouping reduces known duplicate leakage, but some semantic duplicates may remain. The articles may contain personal information and outdated claims. Assess the corpus's suitability for your application before relying on it for decisions.
+The [official dataset card](https://huggingface.co/datasets/dongqi-me/SciNews) lists [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) as its license. Separately, its access form requires applicants to limit use to non-commercial academic research or educational purposes. Both source notices are preserved in [SOURCE_README.md](SOURCE_README.md). Permission to publish this preparation does not change these notices or third-party rights in the news articles.
+
+### Limitations
+
+The corpus reflects the source's selection of news articles, historical coverage and class imbalance. Source categories are retained as labels and may not describe every topic discussed in an article. Automatic preprocessing changes the token representation and may lose distinctions present in the original text.
+
+Family grouping reduces known duplicate leakage, but some semantic duplicates may remain. The articles may contain personal information and outdated claims.
+
+### Citation
+
+Please cite the original SciNews publication using the full BibTeX entry below when using this dataset. Also identify this TopicNet preparation and its repository revision so readers can distinguish it from the original SciNews release.
 
 ```bibtex
 @inproceedings{pu-etal-2024-scinews,
@@ -145,5 +155,3 @@ Source selection, historical coverage, class imbalance and automatic preprocessi
     pages = "14429--14444"
 }
 ```
-
-Please also identify this TopicNet preparation and its repository revision so readers can distinguish it from the original SciNews release.