MoL: Adaptive Mixture-of-Length Reasoning for Efficient Question Answering with Context - Li, Guocong; Zhang, Jinjian; Wang, Ping; Liu, Dongnan; Liang, Tian; Qi, Qiuyi; Huang, Hao; Guo, Siyan; Bao, Mutian; Zhou, Wei; Mo, Linjian; Xu, Hongxia; et al. (International Conference on Learning Representations, 2026)