Research results that are best recognised internationally include: innovative application of qualitative modelling, deep knowledge and machine learning techniques in the KARDIO expert system for the diagnosis of heart disorders, and significant contributions to machine learning from noisy data. The KARDIO project is described in the book KARDIO: a Study in Deep and Qualitative Knowledge for Expert Systems (by I. Bratko, I. Mozetic and N. Lavrac, published by the MIT Press in 1989). Professor Bratko is also the author of the widely accepted textbook Prolog Programming for Artificial Intelligence, published by Addison-Wesley (second edition 1990), and translated to German, Italian, French, Japanese, Russian and Slovenian. In 1994, the book Inductive Logic Programming: Techniques and Applications (by N. Lavrac and S. Dzeroski) was published by Ellis Horwood.
In addition, Slovenian researchers have contributed papers to major international AI conferences, including IJCAI and ECAI, and publications in international journals and books. Also, they have been members of editorial boards of international journals and programme committees of international conferences, including IJCAI, ECAI, EWSL and ECML.