1. Internet Usage Data: This data contains general demographic information on internet users in 1997.
2. 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
3. Artificial Characters: Dataset artificially generated by using first order theory which describes structure of ten capital letters of English alphabet
4. Internet Advertisements: This dataset represents a set of possible advertisements on Internet pages.