Web Mining Techniques

The Internet is a worldwide, publicly accessible series of interconnected computer networks that transmit data. Internet today is called as Information Super Highway, the web purports to provide access to vast quantities of information. . The wide adoption of the Internet has fundamentally altered the ways in which we communicate, gather information, conduct businesses and make purchases. As the use of the World Wide Web and email skyrocketed, computer scientists and physicists rushed to characterize this new phenomenon. While initially they were surprised by the tremendous variety the Internet demonstrated in the size of its features, they soon discovered a widespread pattern in their measurements: there are many small elements contained within the Web, but few large ones. A few sites consist of millions of pages, but millions of sites only contain a handful of pages. Few sites contain millions of links, but many sites have one or two. Millions of users flock to a few select sites, giving little attention to millions of others. The expansion of the World Wide Web (Web for short) has resulted in a large amount of data that is now in general freely available for user access. The different types of data have to be managed and organized in such a way that they can be accessed by different users efficiently. The long-term success of the WWW depends upon fast response time. People use the web to access information from remote sites, but do not like to wait long for their results. A widely cited study from Zonal Research provide evidence for the eight second rule in electronic commerce which states that, if a web site takes more than eight seconds to load, the user is much more likely to become frustrated and leave the site. The latency of retrieving a web document depends upon several factors, such as network bandwidth, propagation time, and the speed of the server and client computers. For reducing user perceived latency, many researchers have been working constantly