Change Detection and Notification of Webpages: A Survey
It provides a comprehensive overview for researchers and practitioners working on automating webpage monitoring, but it is incremental as it synthesizes existing work.
This survey addresses the problem of monitoring dynamic webpages for changes by classifying and analyzing Change Detection and Notification (CDN) systems, highlighting current challenges and areas for improvement.
Majority of the currently available webpages are dynamic in nature and are changing frequently. New content gets added to webpages and existing content gets updated or deleted. Hence, people find it useful to be alert for changes in webpages which contain information valuable to them. In the current context, keeping track of these webpages and getting alerts about different changes have become significantly challenging. Change Detection and Notification (CDN) systems were introduced to automate this monitoring process and notify users when changes occur in webpages. This survey classifies and analyzes different aspects of CDN systems and different techniques used for each aspect. Furthermore, the survey highlights the current challenges and areas of improvement present within the field of research.