Review for NeurIPS paper: Domain Generalization for Medical Imaging Classification with Linear-Dependency Regularization

Weaknesses: The linear combination of multi-source domain has been investigated in [a,b], which shoule be discussed. Multi-source Domain Adaptation for Face Recognition Multi-Source Domain Adaptation: A Causal View Using KL divergence or GAN to align many source domains is a quite common operation. The method seems like a simple combination of [37] and KL-divergence based alignment. Is the other divergence measure can be applied for this framework? The abstract claims that the medical image are usually heterogeneous, but the tested datasets are homogeneous.