nremond

# Compute the comment score
def compute_comment_score(c)
    upcount = (c['up'] ? c['up'].length : 0)
    downcount = (c['down'] ? c['down'].length : 0)
    n = upcount + downcount
    return 0 if n==0
    #1.6 = 95%,1.0 = 85%
    z = 1.6
    phat = Float(ups) / n
    Math.sqrt(phat+z*z/(2*n)-z*((phat*(1-phat)+z*z/(4*n))/n))/(1+z*z/n)