1. Audiology (Standardized): Standardized version of the original audiology database
2. Congressional Voting Records: 1984 United Stated Congressional Voting Records; Classify as Republican or Democrat
3. Lymphography: This lymphography domain was obtained from the University Medical Centre, Institute of Oncology, Ljubljana, Yugoslavia. (Restricted access)
4. Primary Tumor: From Ljubljana Oncology Institute
5. Soybean (Large): Michalski's famous soybean disease database
6. SPECT Heart: Data on cardiac Single Proton Emission Computed Tomography (SPECT) images. Each patient classified into two categories: normal and abnormal.