These formulae mimic the ones discussed previously, but they are built under a different assumption: that the saliency (Giora, 1997) of a word's prior polarity might be more related to its posterior polarities score, rather than to sense frequencies.
other works such as (Neviarouskaya et al., 2011) use a fine grained classification approach too, but they consider emotion categories (anger, joy, fear, etc.