Update dataset card

README.md

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+---
+license: cc-by-4.0
+viewer: false
+---
+
 # HubEdgeLoc Dataset
 
 [![Paper](https://img.shields.io/badge/Paper-IMWUT-blue.svg)](#)
@@ -69,3 +74,11 @@ The `Fingerprint Database` directory contains the reference data used to constru
 - **`Month1/` to `MonthX/`:** Independent data collected in subsequent months for evaluating temporal robustness. The airport contains Month1 through Month5, while the campus contains Month1 and Month2.
 
 The MAC-like values in the published files are privacy-preserving virtual identifiers rather than the original hardware addresses.
+
+## Citation
+
+If you use this dataset, please cite the accompanying HubEdgeLoc paper and dataset. Citation metadata is provided in [`CITATION.cff`](CITATION.cff).
+
+## License
+
+This dataset is released under the [CC BY 4.0 license](LICENSE).