Review for NeurIPS paper: Federated Principal Component Analysis

Four knowledgeable reviewers support acceptance of this paper, in view of the novelty of the differentially private, federated PCA algorithm and the strength of the analysis provided for its variants. I concur with the reviewers. The reviewers pointed out issues with the clarity of the paper, and the authors promised several edits to address this issue in their rebuttal; please implement these changes.