CertainlyUncertain: A Benchmark and Metric for Multimodal Epistemic and Aleatoric Awareness - Chandu, Khyathi; Li, Linjie; Awadalla, Anas; Lu, Ximing; Park, Jae Sung; Hessel, Jack; Wang, Lijuan; Choi, Yejin (International Conference on Learning Representations, 2025)