HOLA: Enhancing Audio-visual Deepfake Detection via Hierarchical Contextual Aggregations and Efficient Pre-training. - Xuecheng Wu; Danlei Huang; Heli Sun; Xinyi Yin; Yifan Wang; Hao Wang; Jia Zhang; Fei Wang; Peihao Guo; Suyu Xing; Junxiao Xue; Liang He 006 (CoRR, 2025)