This volume constitutes the proceedings of the 7th Conference on Arti?cial Intelligence and Soft Computing, ICAISC2004, held in Zakopane, Poland, June 7 11, 2004. The conference was organized by the Polish Neural Network Society in cooperation with the Department of Computer Engineering at the Tech- calUniversityofCzesto, chowa, WSHE University in L od z and IEEE Neural Networks Society. The previous conferences took place in Kule (1994), Szczyrk (1996), Kule (1997) and Zakopane (1999, 2000, 2002) and attracted a large number of papers and internationally recognized speakers: Prof. Lot? A....