sgcrf.py 文件源码

def neg_log_likelihood(self, Lam, Theta, fixed, vary):
        "compute the negative log-likelihood of the GCRF"
        return -log(np.linalg.det(Lam)) + \
                np.trace(np.dot(fixed.Syy, Lam) + \
                2*np.dot(fixed.Sxy.T, Theta) + \
                np.dot(vary.Psi, Lam))