Graphical Methods for Efficient Likelihood Inference in Gaussian Covariance Models
Alan Fern and Sungwook Yoon and Robert Givan

@article{9:31,author={Sungwook Yoon and Alan Fern and Robert Givan}, Title={Graphical Methods for Efficient Likelihood Inference in Gaussian Covariance Models},journal={Journal of Machine Learning Research},volume={9}, url={http://www.jmlr.org/papers/volume9/chen08a/chen08a.pdf}}