Multicriteria Decision Aid Classification Methods to the classification problem Review of classification techniques Multicriteria decision aid classification techniques Preference disaggregation classification methods Experimental comparison of classification techniques Classification problems in finance Conclusions and future perspectives. The book discusses a new approach to the classification problem following the decision support orientation of multicriteria decision aid. The book reviews the existing research on the development of classification methods investigating the corresponding model development procedures and providing a thorough analysis of their performance both in experimental situations and real world problems from the field of finance. Audience: Researchers and professionals working in management science decision analysis operations research financial banking analysis economics statistics computer science as well as graduate students in management science and operations research.