Semantic Voting: A Self-Evaluation-Free Approach for Efficient LLM Self-Improvement on Unverifiable Open-ended Tasks - Jiang, Chunyang; Zhang, Yonggang; Cai, Yiyang; Chan, Chi-Min; Liu, Yulong; Chen, Mingming; Xue, Wei; Guo, Yike (International Conference on Learning Representations, 2026)