Most of this material is derived from the 2nd edition 2006 of the text Han and Kamber, Data Mining Concepts and Techniques, Chapter 10, or the corresponding powerpoint slides made available by the publisher. Where a source other than the text or its slides was used for the material, attribution is given. Unless othewise stated, images are copyright of the publisher, Elsevier.
    Many images in chapter 2 were provided by Gaya Jayasinghe, and are individually attributed.