jj = proposalInfos ! j
topicPref = case fst jj of
PTopic1 t1 -> expertnessToPref (ii ! t1)
- PTopic2 t1 t2 -> (expertnessToPref (ii ! t1) + expertnessToPref (ii ! t2)) / 2
+ PTopic2 t1 t2 -> (expertnessToPref (ii ! t1)
+ + expertnessToPref (ii ! t2)) / 2
in topicPref * snd jj - 4)
return $ Instance numRvrs numProps loadA prefA