Adaptive Load Balancing And Change Visualization For WebVigil

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Title: Adaptive Load Balancing And Change Visualization For WebVigil
Author: Chelladurai Hari Hara, Subramanian
Abstract: There is a need for selective monitoring , the contents of web pages . Periodical visit for understanding changes to a web page is both inefficient and time consuming . WebVigiL is a system developed for automating the change detection and timely notification of HTML /XML pages based on user specified changes of interest . User interest , specified as a sentinel /profile , is automatically monitored by the system using a combination of learning -based and event -driven techniques . The first prototype concentrated on the functionality of the WebVigiL system . This thesis extends the WebVigiL system in a number of ways . The primary focus of this thesis is the improvements to the performance and scalability aspects of the prototype . A load balancer is proposed based on the analysis and estimation of the load factors imposed by a sentinel on the system . An adaptive load balancer has been developed for the WebVigiL , that uses various sentinel properties to distribute sentinels among servers using a number of strategies . A web -based DASHBOARD has been developed to enable users to manage and visualize changes to their sentinels . As part of the DASHBOARD , a Dual -Frame presentation for displaying the detected changes is provided (both for HTML and XML ) . Other contributions of the thesis include integration of the above modules into the current system , making the WebVigiL system stable and robust (by fixing various bugs ) and testing the system for various test cases .
URI: http : / /hdl .handle .net /10106 /226
Date: 2007-08-23


Adaptive Load Balancing And Change Visualization For WebVigil. Available electronically from http : / /hdl .handle .net /10106 /226 .

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