Due to the growth of WWW related technologies, the number of web sites on the Internet has increased rapidly, and human daily life is beginning to depend on such sites like shopping sites, official sites of enterprises, promotion sites of events and so on. Each website has different types of information or content e.g. articles, blogs, newsletters, and training videos. These web sites contain a variety of content and complex link structures. Therefore it also requires an understanding of what content draws users attention and how users interact with that content. As content on any website is one of the most important element, we need to optimize content. For content optimization we need some metrics to tell us how each aspect of the content performs. How does the content on the web site affect the traffic patterns? Does it lead users to the site? Is there content on the site that performs better than we expect it to? Web site administrators, who are constantly required to
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