Abstract: This paper will focus on Web usage mining for improvement in performance of a website. Web usage mining consists of three phases Pre-processing, Pattern discovery and Pattern analysis. A detailed description will be given for each part of them, however, special attention will be paid to the user navigation patterns discovery and analysis. In this paper the user privacy is an another important issue. Web mining, will be included to make it easier to understand how the data mining techniques will apply to large Web data repositories to extract important information.
Keywords: Web mining, Pre-processing, Pattern discovery, Pattern Analysis