The union of the retained sets will be denoted R T,n , that is, the union of all sets {s i } ∪ C i,n with precision on the training set > T. In Wiebe (2000), the seeds (the s i s) were extracted from the subjective-element annotations in corpus WSJ-SE.
the seeds were the adjectives that appear at least once in a subjective element in WSJ-SE.