With respect to the conditional paraphrase probability and PMI, it is necessary to consider up to the 400th place to cover all correct paraphrases.
we employed the conditional paraphrase probability of bilingual pivoting given in Equation (1), the symmetric paraphrase score of PPDB given by Equation (3), and distributional similarity as baselines, and compared them with PMI shown in Equation (7) and the MIPA score given in Equation (11).