1. KDD Cup 1999 Data: This is the data set used for The Third International Knowledge Discovery and Data Mining Tools Competition, which was held in conjunction with KDD-99
2. Artificial Characters: Dataset artificially generated by using first order theory which describes structure of ten capital letters of English alphabet
3. Internet Advertisements: This dataset represents a set of possible advertisements on Internet pages.
4. Mechanical Analysis: Fault diagnosis problem of electromechanical devices; also PUMPS DATA SET is newer version with domain theory and results