The proceedings of the 14th Italian Workshop on Neural Nets WIRN VIETRI 2003 are collected in this volume. The workshop, held in Vietri sul Mare (SA) June 4–7, 2003 was jointly organized by the International Institute for Advanced Scienti?c Studies “Eduardo R. Caianiello” (IIASS) and the Societ` a Italiana Reti Neuroniche(SIREN). Thevolumecoversup-to-datetopicsonneuralnetsand- lated ?elds. It contains invited review papers and selected original contributions presented in either oral or poster sessions by both Italian and non-Italian - searchers. The contributions have been assembled, for reading convenience, into four sections: Models, Architectures and Algorithms, Image and Signal Proce- ing, and Applications, plus two special sessions. The latter gives a fresh persp- tive in the ?elds of “Bioinformatics and Statistics” and “Formats Knowledge: Words, Images, Narratives”, sharing the technical languages of the involved d- ciplines. The editors would like to thank the invited speakers and all the c- tributors whose highly quali?ed papers contributed towards the success of the workshop. Finally, special thanks go to the referees for their accurate work. June 2003 Bruno Apolloni Maria Marinaro Roberto Tagliaferri Organizing Scienti?c Committee B. Apolloni (Univ. Milano), A. Bertoni (Univ. Milano), N. A. Borghese (Univ. Milano),D. D. Caviglia(Univ. Genova),P. Campadelli(Univ. Milano),A. Chella (Univ. Palermo),A. Colla(ELSAGGenova),A. Esposito(I. I. A. S. S. ),F. M. Fr- tale Mascioli (Univ. Roma), C. Furlanello (ITC-IRST Trento), S. Giove (Univ. Venezia), M. Gori (Univ. Siena), M. Marinaro (Univ. Salerno), F. Masulli (Univ. Pisa), C. Morabito (Univ. Reggio Calabria), P. Morasso (Univ. Genova), G.