In our experiments, we find that for about 90% test sentences, the paraphrases generated by the decoding-based approach D-1 are outside the candidates.
we compare the paraphrases generated by S-1 and D-1 and find that, for about 40% test sentences, S-1 gets higher scores than D-1, while for another 21% test sentences, D-1 gets higher scores than S-1 8 .