Computer and Information Sciences - ISCIS 2006

Thesearetheproceedingsofthe21stInternationalSymposiumonComputerand ? Information Sciences (ISCIS 2006) held in Istanbul, Turkey, November 1 – 3, 2006. ISCIS 2006 was organized by the Faculty of Engineering and Natural S- ences of Sabanc?University. These proceedings include updated versions of 106 papers selected by the program committee for presentation at the symposium. The increasing com- tition for presenting at the symposium, which relies on the success of previous ISCIS symposia,has led to