Sun Dec 8th through Sat the 14th, 2019 at Vancouver Convention Center
This paper was reviewed by three expert reviewers and received two Weak Accept and one Accept recommendations. After rebuttal, all the three reviewers are positive about this paper, and agree that the proposed model is novel. Initially, R1 had great concerns about the experimental setup/results. The new results provided in the rebuttal successfully solved R1's main concern. On the one hand, both R2 and R3 think the empirical results are strong and impressive. On the other hand, R1 thinks that the improvements are marginal when the embedding size is large. On balance, the AC recommends accepting the paper, but also strongly advise the authors to include additional comparisons and other revisions suggested by the reviewers and promised in the rebuttal.