1. Anonymous Microsoft Web Data: Log of anonymous users of www.microsoft.com; predict areas of the web site a user visited based on data on other areas the user visited. 2. Audiology (Standardized): Standardized version of the original audiology database 3. Balance Scale: Balance scale weight & distance database 4. Balloons: Data previously used in cognitive psychology experiment; 4 data sets represent different conditions of an experiment 5. Breast Cancer: Breast Cancer Data (Restricted Access) 6. Car Evaluation: Derived from simple hierarchical decision model, this database may be useful for testing constructive induction and structure discovery methods. 7. Chess (King-Rook vs. King-Pawn): King+Rook versus King+Pawn on a7 (usually abbreviated KRKPA7). 8. Congressional Voting Records: 1984 United Stated Congressional Voting Records; Classify as Republican or Democrat 9. Connect-4: Contains connect-4 positions 10. Connectionist Bench (Nettalk Corpus): The file "nettalk.data" contains a list of 20,008 English words, along with a phonetic transcription for each word. The task is to train a network to produce the proper phonemes 11. Hayes-Roth: Topic: human subjects study 12. LED Display Domain: From Classification and Regression Trees book; We provide here 2 C programs for generating sample databases 13. Lenses: Database for fitting contact lenses 14. Lymphography: This lymphography domain was obtained from the University Medical Centre, Institute of Oncology, Ljubljana, Yugoslavia. (Restricted access) 15. Molecular Biology (Promoter Gene Sequences): E. Coli promoter gene sequences (DNA) with partial domain theory 16. Molecular Biology (Splice-junction Gene Sequences): Primate splice-junction gene sequences (DNA) with associated imperfect domain theory 17. MONK's Problems: A set of three artificial domains over the same attribute space; Used to test a wide range of induction algorithms 18. Mushroom: From Audobon Society Field Guide; mushrooms described in terms of physical characteristics; classification: poisonous or edible 19. Nursery: Nursery Database was derived from a hierarchical decision model originally developed to rank applications for nursery schools. 20. PANDOR: PANDOR is a novel and publicly available dataset for online recommendation provided by Purch (http://www.purch.com/). 21. Plants: Data has been extracted from the USDA plants database. It contains all plants (species and genera) in the database and the states of USA and Canada where they occur. 22. Primary Tumor: From Ljubljana Oncology Institute 23. Shuttle Landing Control: Tiny database; all nominal values 24. Solar Flare: Each class attribute counts the number of solar flares of a certain class that occur in a 24 hour period 25. Soybean (Large): Michalski's famous soybean disease database 26. Soybean (Small): Michalski's famous soybean disease database 27. SPECT Heart: Data on cardiac Single Proton Emission Computed Tomography (SPECT) images. Each patient classified into two categories: normal and abnormal. 28. Tic-Tac-Toe Endgame: Binary classification task on possible configurations of tic-tac-toe game 29. Trains: 2 data formats (structured, one-instance-per-line) 30. US Census Data (1990): The USCensus1990raw data set contains a one percent sample of the Public Use Microdata Samples (PUMS) person records drawn from the full 1990 census sample. | 
