The purpose of this volume is to present recent developmentsin the use of fuzzy sets in broadly perceived interactiveoptimization and mathematical programming. After someintroductory sections some human related issues are covered.Then, basic issues related to fuzzy optimization are dealtwithwith an emphasis on elements of human interaction.Finally, software packages are described and applicationsare presented.The volume provides much information on how to use fuzzysets to formalize human related elements in interactiveoptimization.