فهرس المقالات Change point estimation . Covariance matrix . Multilayered perceptron neural network . Multivariateattribute processes . Phase II حرية الوصول المقاله صفحة الملخص نص كامل 1 - Step change point estimation in the multivariate-attribute process variability using artificial neural networks and maximum likelihood estimation Mohammad Reza Maleki Amirhossein Amiri Seyed Meysam Mousavi