Reviews: Exact Gaussian Processes on a Million Data Points

A good result from this rebuttal exercise is that the authors now report test likelihoods, which I think should always be reported in GP papers. It will be great if the authors can be a bit more explicit about the additional contributions with respect to the previous work [11,26]. It is OK to focus on the engineering effort and experimental evaluation as the main contribution of the paper. The paper will also benefit from reporting error bars on all the results. The paper does not provide new theoretical developments or a technical contribution.