[A total of 121 pages] Editorial: Intelligent Data Engineering and Automated Learning: Best Papers from IDEAL '09 by Emilio Corchado and Hujun Yin (escorchado@usal.es) 2 pages 10115_2010_356 Carmona Cristobal An overview on subgroup discovery: foundations and applications 31 KAIS-2419.1 10.1007/s10115-010-0356-2 Survey Paper SI: IDEAL-09 (by Invitation)/regular paper 10115_2010_345 Wozniak Michal A hybrid decision tree training method using data streams 13 KAIS-2439.1 10.1007/s10115-010-0345-5 Regular Paper SI: IDEAL-09 (by Invitation) 10115_2010_368 De Paz Juan Combining case-based reasoning systems and support vector regression to evaluate the atmosphere-ocean interaction 23 KAIS-2409.2 10.1007/s10115-010-0368-y Regular Paper SI: IDEAL-09 10115_2011_381 Lee Soo-Young Extraction of independent discriminant features for data with asymmetric distribution 17 KAIS-2387.3 10.1007/s10115-011-0381-9 Regular Paper SI: IDEAL-09 (by Invitation) 10115_2010_377 Grana Manuel Knowledge management in image-based analysis of blood vessel structures 35 KAIS-2385.2 10.1007/s10115-010-0377-x Regular Paper SI: IDEAL-09 (by Invitation)