%0 Book Section %A Winkelbauer, L. %A Fedra, K. %B Proceedings. The Seventh IEEE Conference on Artificial Intelligence Application %C Piscataway, NJ, United States %D 1991 %F iiasa:13612 %I IEEE %P 59-62 %R doi:10.1109/CAIA.1991.120846 %T ALEX: automatic learning in expert systems %U https://pure.iiasa.ac.at/id/eprint/13612/ %V i %X An environment for automatic learning (ALEX) has been designed and implemented in a modular fashion. The system consists of an example generation module (i.e., tutor software system representing the application domain); the learning subsystem; an analysis component; and the user interface and control structure integrating these components. As the core of the learning subsystem the incremental learning algorithm ID-H has been developed, based on the incremental application of hybrid clustering. To improve the overall performance of the learning environment, a feedback loop between the results of a learning step and the input of the next learning step has been introduced. The learning environment can automatically direct its learning strategy according to its assessment of its performance