Invariance Principle Meets Information Bottleneck for Out-of-Distribution Generalization - Ahuja, Kartik; Caballero, Ethan; Zhang, Dinghuai; Gagnon-Audet, Jean-Christophe; Bengio, Yoshua; Mitliagkas, Ioannis; Rish, Irina (Advances in Neural Information Processing Systems, 2021)