Specifically, given an ambiguous target word, we use the following features from (Mihalcea, 2002): CW : the target word itself CP : POS of the target word CF : surrounding context of 3 words and their POS HNP : the head of the noun phrase to which the target word belongs NB : the first noun before the target word VB : the first verb before the target word NA : the first noun after the target word VA : the first verb after the target word SK : at most 10 context words occurring at least 5 times; determined for each sense Our target words are members of a subjectivity lexicon, because, since they are in such a lexicon, we know they have subjective usages.
we use the lexicon of (Wilson et al., 2005b;Wilson, 2008).