"It is easy to write books that address broad topics and ideas leaving the reader with the question “Yes, but how?” By combining a comprehensive guide to data preparation for data mining along with specific examples in SAS, Mamdouh's book is a rare find—a blend of theory and the practical at the same time. As anyone who has mined data will confess, 80% of the problem is in data preparation; Mamdouh addresses this difficult subject with strong practical techniques and