Empirical study shows that NRM can generate grammatically correct and content-wise appropriate responses to over 75% of the input text, outperforming stateof-the-arts in the same setting, including retrieval-based and SMT-based models.
figure 9 lists 5 responses to the same post, which are gotten with beam search with beam size = 500, among which we keep only the best one (biggest likelihood) for each first word.