1. Badges: Badges labeled with a "+" or "-" as a function of a person's name
2. Bach Chorales: Time-series data based on chorales; challenge is to learn generative grammar; data in Lisp
3. Northix: Northix is designed to be a schema matching benchmark problem for data integration of two entity relationship databases.
4. Planning Relax: The dataset concerns with the classification of two mental stages from recorded EEG signals: Planning (during imagination of motor act) and Relax state.