Reviews: Domain Separation Networks

I like the idea of domain separation even though it is not new. However, I do not think the current draft sufficiently validate the proposed approach. First of all, neither the experimental settings nor the datasets used are standard. To have a direct comparison to other methods (e.g., [7], [29], [17], [26], etc.), standard settings and benchmark datasets should be used. For the current draft, it is not clear the better performance is due to better hyper-parameter tuning on the validation set or from the proposed model. What's more, since the baseline methods in the original papers are NOT tested on these datasets, it might be that with proper tuning of parameters on the validation set (that not available in the standard setting), the baseline methods achieve better performance.