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. 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.
6. Primary Tumor: From Ljubljana Oncology Institute
7. Soybean (Large): Michalski's famous soybean disease database
8. Soybean (Small): Michalski's famous soybean disease database
9. SPECT Heart: Data on cardiac Single Proton Emission Computed Tomography (SPECT) images. Each patient classified into two categories: normal and abnormal.