Note that relatedness values computed according to Equation 2 are sensitive to sentiment labels assigned to reviews in the source domain, because co-occurrences are computed over both lexical and sentiment elements extracted from reviews.
the relatedness of an element u to another element v depends upon the sentiment labels assigned to the reviews that generate u and v. This is an important fact that differentiates our sentiment-sensitive thesaurus from other distributional thesauri which do not consider sentiment information.