gmm_ridge.py 文件源码

def compute_inverse_logdet(self,c,tau):
        Lr = self.L[c,:]+tau # Regularized eigenvalues
        temp = self.Q[c,:,:]*(1/Lr)
        invCov = sp.dot(temp,self.Q[c,:,:].T) # Pre compute the inverse
        logdet = sp.sum(sp.log(Lr)) # Compute the log determinant
        return invCov,logdet