Date Added: Jan 2013
Web is a system of interlinked hypertext documents accessed via Internet. Internet is a global system of interconnected computer networks that serve billions of users worldwide. The huge amount of documents on the web is challenging for web search engines. Web contains multiple copies of the same content or same web page. Many of these pages on the Web are duplicates and near duplicates of other pages. Web search engines face substantial problems due to such duplicate and near duplicate web pages. These pages enlarge the space required to store the index, increase the cost of serving results and so frustrates the users.