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 (Original): Nominal audiology dataset from Baylor
3. Audiology (Standardized): Standardized version of the original audiology database
4. Balance Scale: Balance scale weight & distance database
5. Balloons: Data previously used in cognitive psychology experiment; 4 data sets represent different conditions of an experiment
6. Breast Cancer: Breast Cancer Data (Restricted Access)
7. Car Evaluation: Derived from simple hierarchical decision model, this database may be useful for testing constructive induction and structure discovery methods.
8. Chess (King-Rook vs. King-Pawn): King+Rook versus King+Pawn on a7 (usually abbreviated KRKPA7).
9. Connect-4: Contains connect-4 positions
10. Hayes-Roth: Topic: human subjects study
11. Kinship: Relational dataset
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 (Protein Secondary Structure): From CMU connectionist bench repository; Classifies secondary structure of certain globular proteins
17. Molecular Biology (Splice-junction Gene Sequences): Primate splice-junction gene sequences (DNA) with associated imperfect domain theory
18. MONK's Problems: A set of three artificial domains over the same attribute space; Used to test a wide range of induction algorithms
19. Mushroom: From Audobon Society Field Guide; mushrooms described in terms of physical characteristics; classification: poisonous or edible
20. HIV-1 protease cleavage: The data contains lists of octamers (8 amino acids) and a flag (-1 or 1) depending on whether HIV-1 protease will cleave in the central position (between amino acids 4 and 5).
21. Nursery: Nursery Database was derived from a hierarchical decision model originally developed to rank applications for nursery schools.
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. Congressional Voting Records: 1984 United Stated Congressional Voting Records; Classify as Republican or Democrat
31. 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.
32. Entree Chicago Recommendation Data: This data contains a record of user interactions with the Entree Chicago restaurant recommendation system.
33. MSNBC.com Anonymous Web Data: This data describes the page visits of users who visited msnbc.com on September 28, 1999. Visits are recorded at the level of URL category (see description) and are recorded in time order.
34. Reuters-21578 Text Categorization Collection: This is a collection of documents that appeared on Reuters newswire in 1987. The documents were assembled and indexed with categories.
35. Syskill and Webert Web Page Ratings: This database contains HTML source of web pages plus the ratings of a single user on these web pages. Web pages are on four seperate subjects (Bands- recording artists; Goats; Sheep; and BioMedical)
36. 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
37. 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.
38. PANDOR: PANDOR is a novel and publicly available dataset for online recommendation provided by Purch (http://www.purch.com/).