doFeats_1.py 文件源码

def __fixed_point_iteration(self, imps, clks, alpha, beta):
        numerator_alpha = 0.0
        numerator_beta = 0.0
        denominator = 0.0

        for i in range(len(imps)):
            numerator_alpha += (special.digamma(clks[i] + alpha) - special.digamma(alpha))
            numerator_beta += (special.digamma(imps[i] - clks[i] + beta) - special.digamma(beta))
            denominator += (special.digamma(imps[i] + alpha + beta) - special.digamma(alpha + beta))

        return alpha * (numerator_alpha / denominator), beta * (numerator_beta / denominator)