1. Audiology (Standardized): Standardized version of the original audiology database
2. Breast Cancer: Breast Cancer Data (Restricted Access)
3. Lymphography: This lymphography domain was obtained from the University Medical Centre, Institute of Oncology, Ljubljana, Yugoslavia. (Restricted access)
4. Mushroom: From Audobon Society Field Guide; mushrooms described in terms of physical characteristics; classification: poisonous or edible
5. Primary Tumor: From Ljubljana Oncology Institute
6. Soybean (Large): Michalski's famous soybean disease database
7. Soybean (Small): Michalski's famous soybean disease database
8. SPECT Heart: Data on cardiac Single Proton Emission Computed Tomography (SPECT) images. Each patient classified into two categories: normal and abnormal.