MM-OPERA: Benchmarking Open-ended Association Reasoning for Large Vision-Language Models - Huang, Zimeng; Ke, Jinxin; Fan, Xiaoxuan; Yang, Yufeng; Liu, Yang; Zhonghan, Liu; Wang, Zedi; Dai, Junteng; Jiang, Haoyi; Zhou, Yuyu; Wang, Keze; Chen, Ziliang (Advances in Neural Information Processing Systems, 2025)