Update README.md

Author: o-laurent

README.md

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 # Understanding-Label-smoothing-Selective-classification
 The project page of the ICLR 2025 paper "Towards Understanding Why Label Smoothing Degrades Selective Classification and How to Fix It"
+
+If you find this work helpful for your research, consider citing:
+```
+@inproceedings{xia2024understanding,
+    title={Towards Understanding Why Label Smoothing Degrades Selective Classification and How to Fix It},
+    author={Xia, Guoxuan and Laurent, Olivier and Franchi, Gianni and Bouganis, Christos-Savvas},
+    booktitle={ICLR},
+    year={2025}       
+}
+```