Formally, we define the score function P (x j |w T t ) of sememes x j given a target word w T t as: where r s is the descending rank of word similarity cos(w S s , w T t ) for the source word w S s , and c ∈ (0, 1) is a hyperparameter.
c rs is a declined confidence factor which can eliminate the noise from irrelevant source words and concentrate on the most similar source words when predicting sememes for target words.