ExpertLongBench: Benchmarking Language Models on Expert-Level Long-Form Generation Tasks with Structured Checklists - Ruan, Jie; Nair, Inderjeet; Cao, Shuyang; Liu, Amy; Munir, Sheza; Pollens-Dempsey, Micah; Chiang, Yune-Ting; Kates, Lucy; David, Nicholas; Chen, Sihan; Yang, Ruxin; Yang, Yuqian; et al. (International Conference on Learning Representations, 2026)