Scientific Special Session was organized within the framework of the XXI Autumn Meeting of Polish Information Processing Society and took place in the Golebiewski Hotel in Wisla, Poland, December 5-9, 2005.

Autumn Meetings of Polish Information Processing Society are one of the longest existing Polish conferences devoted to all aspects of computer science and information technology. The first Meeting took place in 1984 and since then it has evolved through a number of forms. It was in 2005, when for the first time a Scientific Special Session, consisting of refereed contributions was organized. The Session attracted 47 contributions out of which 27 were accepted for presentation and publication in conference proceedings (published on a CD). Moreover, after the conference, extended and improved versions of 26 papers were published in Annales Informatica UMCS.

Marcin Paprzycki
Chairman of the Organizing Committee
of the 2005 Scientific Special Session