The polarity lexicon is initialized with the lexicon of  and then expanded using the General Inquirer dictionary.
6 a word contained in at least two of the following categories is considered as positive: POSITIV, PSTV, POSAFF, PLEASUR, VIRTUE, INCREAS, and a word contained in at least one of the following categories is considered as negative: NEGATIV, NGTV, NEGAFF, PAIN, VICE, HOSTILE, FAIL, ENLLOSS, WLBLOSS, TRAN-LOSS.