AEA: Adaptive Expert Allocation Improves Sentence Embeddings from Mixture-of-Experts LLM. - Shufan Yang; Zifeng Cheng; Zhiwei Jiang 001; Qingfeng Qi; Yafeng Yin 002; Cong Wang 034; Ao Zhou; Qing Gu 001 (ACL (1), 2026)