ERNIE-ViLG: Unified Generative Pre-training for Bidirectional Vision-Language Generation. - Han Zhang; Weichong Yin; Yewei Fang; Lanxin Li; Boqiang Duan; Zhihua Wu; Yu Sun 029; Hao Tian 005; Hua Wu 003; Haifeng Wang 001 (CoRR, 2021)