Distance weighting has been used in several studies (Beeferman, Berger, & Lafferty, 1997;Brosseau-Villeneuve, Nie, & Kando, 2010;Gao, Zhou, Nie, He, & Chen, 2002) as a means of estimating the association between two words.
since our work is a special case of WTD that focuses on translating polysemous opinion words for a given opinionated sentence, we need give more weight to words that are closely related to opinion words, such as the product features.