Update README.md

README.md

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-license: mit
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+This is a dataset card for the **BuildingNL** dataset used in [UniCo](https://unico-completion.github.io) for structured shape completion.
+
+The dataset is originally from [BuildingPCC](https://github.com/tudelft3d/Building-PCC-Building-Point-Cloud-Completion-Benchmarks/tree/main) and is provided in preprocessed form for training and evaluation with the released code.
+
+## Citations
+
+If you use this dataset in scientific work, please consider citing the papers:
+
+```bibtex
+@article{chen2026unico,
+  title={Unified Primitive Proxies for Structured Shape Completion},
+  author={Zhaiyu Chen and Yuqing Wang and Xiao Xiang Zhu},
+  journal={arXiv preprint arXiv:2601.00759},
+  year={2026}
+}
+```
+
+```bibtex
+@article{isprs-annals-X-4-W5-2024-179-2024,
+  author = {Gao, W. and Peters, R. and Stoter, J.},
+  title = {Building-PCC: Building Point Cloud Completion Benchmarks},
+  journal = {ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences},
+  doi = {10.5194/isprs-annals-X-4-W5-2024-179-2024}
+  }
+```