BeSmart2: A multicriteria decision aid application Anabela Tereso 1 and João Amorim 1 , 1 Department of Production and Systems Engineering Algoritmi Centre University of Minho, 4800-058 Guimarães, Portugal anabelat@dps.uminho.pt, jmrcamorim@outlook.com Abstract. This paper presents an improved version of an application whose goal is to provide a simple and intuitive way to use multicriteria decision methods in day-to-day decision problems. The application allows comparisons between several alternatives with several criteria, always keeping a permanent backup of both model and results, and provides a framework to incorporate new methods in the future. Developed in C#, the application implements the AHP, SMART and Value Functions methods. Keywords: Multicriteria Decision Aid, AHP, SMART, Value Functions 1 Introduction and literature review The problem of decision making has been throughout the human history a topic of reflection by many scholars, being suggested that the ability to decide is what separates us from other species. As we moved to more recent times, decision problems have grown in size, frequency and importance. The immense competition between companies makes that each decision counts, and the slightest advantage can make or break the future success of a company. However, making a decision can be a very difficult task without adequate tools, either due to uncertainty, the time-span that it will affect, or just due to the sheer amount of information involved. It should also be noted that the human mind is naturally biased when it comes to decision making, as it tends to give more relevance to the first information received, and to make choices in order to justify previous decisions regardless of their current validity [1]. In order to help with the decision process, several decision aid software tools were created, some with a specific purpose and others with a more general purpose. Some examples are: tools for multiple objective problems (ADBASE [2], Tommix [3]); tools for ordering problems (Electre Tri [4], IRIS [5]); tools for group decision (AGAP [6], WINGDSS [7]) and tools for multiple criteria problems, like Criterium Decision Plus [8] and WebHipre [9]. In BeSmart2 we implemented some of the most widely known Multicriteria Decision methods, such as the Analytic Hierarchy Process (AHP) [10], Simple MultiAttribute Rating Technique (SMART) [11], Value Functions [12], and a simple interface to input multicriteria problems of any kind is provided.