An Improved EM Algorithm for Network Link Delay Distributions Inference

摘要

Inference of network internal link characteristics has become an increasingly important issue for network monitor and network management. In this paper, an improved EM algorithm based on A* algorithm was proposed for network link delay distributions inference. We use A* algorithm to accelerate the convergence speed of EM algorithm. Experiment results show the improved EM algorithm is faster than the traditional EM algorithm. It is also effective and suitable for solving such problem in the field of network tomography.