This document summarizes research on web usage mining techniques. It discusses how web usage mining involves discovering patterns from web server logs to understand how users interact with websites. The document reviews several papers on preprocessing log data, pattern discovery methods like clustering and classification, and classifying users based on patterns. It also provides an overview of the web usage mining process, which typically involves preprocessing, pattern discovery from cleaned logs, and using patterns to classify users. The goal is to help website administrators better understand users and personalize websites.