Update README.md

README.md

@@ -10,4 +10,17 @@ tags:
 - definition modeling
 size_categories:
 - 10K<n<100K
----
+---
+
+**Citation:**
+```bibtex
+@article{liu2026lmlexiconimprovingdefinitionmodeling,
+      title={LM-Lexicon: Improving Definition Modeling via Harmonizing Semantic Experts}, 
+      author={Yang Liu and Jiaye Yang and Weikang Li and Jiahui Liang and Yang Li and Lingyong Yan},
+      year={2026},
+      eprint={2602.14060},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2602.14060}, 
+}
+```