For example, while it learns that wonderful and amazing are semantically close, it doesn't capture the fact that these are both very strong positive sentiment words, at the opposite end of the spectrum from terrible and awful.
we extend the model with a supervised sentiment component that is capable of embracing many social and attitudinal aspects of meaning (Wilson et al., 2004;Alm et al., 2005;Andreevskaia and Bergler, 2006;Pang and Lee, 2005;Goldberg and Zhu, 2006;Snyder and Barzilay, 2007).