$3.(4$ marks$)$ Clustering Patterns in Web Data:

A website collects information on the types of articles read by users, including categories such as "Sports", "Technology", and "Entertainment". Users are grouped based on their browsing patterns. Describe how clustering can be applied to this web data to group users with similar interests. Mention at least one clustering algorithm $($e$.$g$.,$ K$-$means, DBSCAN$)$ that could be useful for this task and explain how it works in brief.