@inproceedings{zhang2025less,
title = {Less, but Better: Efficient Multilingual Expansion for LLMs via Layer-wise Mixture-of-Experts},
author = {Xue Zhang and Yunlong Liang and Fandong Meng and Songming Zhang and Yufeng Chen and Jinan Xu and Jie Zhou},
year = {2025},
booktitle = {Annual Meeting of the Association for Computational Linguistics},
eprint = {2505.22582},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2505.22582},
}