End-to-end quality of service seen by applications A statistical learning approach

The focus of this work is on the estimation of quality of service (QoS) parameters seen by an application Our proposal is based on end-to-end active measurements and statistical learning tools We propose a methodology where the system is trained during short periods with application flows and probe packets bursts We learn the relation between QoS parameters seen by the application and the state of the network path which is Inferred from the interarrival times of the probe packets bursts We obtain a continuous non intrusive QoS monitoring methodology We propose two different estimators of the network state and analyze them using Nadaraya-Watson estimator and Support Vector Machines (SVM) for regression We compare these approaches and we show results obtained by simulations and by measures in operational networks (C) 2010 Elsevier B V All rights reserved