gaussian_components.py 文件源码

def log_prior(self, i):
        """Return the probability of `X[i]` under the prior alone."""
        mu = self.prior.m_0
        covar = (self.prior.k_0 + 1) / (self.prior.k_0*(self.prior.v_0 - self.D + 1)) * self.prior.S_0
        logdet_covar = slogdet(covar)[1]
        inv_covar = inv(covar)
        v = self.prior.v_0 - self.D + 1
        return self._multivariate_students_t(i, mu, logdet_covar, inv_covar, v)