Title:	ADAPTIVE WEB SERVICE FOR QOS IMPROVEMENT
Author(s):	Erol Gelenbe , Arturo Núñez
ISBN:	972-98947-1-X
Editors:	Pedro Isaías and Nitya Karmakar
Year:	2003
Edition:	1
Keywords:	Packet based routing, Adaptive Web Systems, Quality of Service, Cognitive Packet Networks, Performance Measurement, Traffic Engineering.
Type:	Full Paper
First Page:	355
Last Page:	360
Language:	English
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Paper Abstract:	In this paper we investigate how “self-awareness'', through on-line self-monitoring and measurement, coupled with intelligent adaptive behaviour in response to observed data, can be used to offer adaptive web service for the end-user. Through this mechanism the end-user will notice a Quality of Service (QoS) improvement, every time a web page is requested. We first describe the general principles which govern our design, and briefly describe the experimental packet network system we have built in which end-users(web clients) are allowed to specify their QoS objectives. The network uses on-line adaptive traffic routing to try to meet the users' QoS requests. Cognitive or smart packets are used for self-observation, and reinforcement learning with neural networks is implemented at network nodes to seek new paths and deduce improved paths from existing routes. We present two sets of experiments showing how the network is actually able to discover viable behaviours and adapt its behaviour. First we show how the network is able to discover routes, beginning with an “empty state'' and starting from a random search. Secondly we show how our network can intelligently direct traffic through the Internet to optimize web traffic for a user by offering the best QoS through different Internet Service Providers.
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