Abstract
The logical consistency of decision making matrices is an important topic in developing each multi-criteria decision analysis (MCDA) method. For instance, many published papers are addressed to the decisional matrix’s consistency in the Analytic Hierarchy Process method (AHP), which uses Saaty’s seventeen-values scale.
This work proposes a new approach to measuring consistency for using a simple three-value scale (binary with a tie). The paper’s main contribution is a proposal of a new consistency coefficient for a decision matrix containing judgments from an expert. We show this consistency coefficient based on an effective MCDA method called the Characteristic Objects METhod (COMET). The new coefficient is explained based on the Matrix of Expert Judgment (MEJ), which is the critical step of the COMET method. The proposed coefficient is based on analysing the relationship between judgments from the MEJ matrix and transitive principles (triads analysis). Four triads classes have been identified and discussed. The proposed coefficient makes it easy to determine the logical consistency and, thus, the expert responses’ quality is essential in the reliable decision-making process. Results are presented in some short study cases.
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The work was supported by the National Science Centre, Decision number UMO-2018/29/B/HS4/02725.
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Sałabun, W., Shekhovtsov, A., Kizielewicz, B. (2021). A New Consistency Coefficient in the Multi-criteria Decision Analysis Domain. In: Paszynski, M., Kranzlmüller, D., Krzhizhanovskaya, V.V., Dongarra, J.J., Sloot, P.M.A. (eds) Computational Science – ICCS 2021. ICCS 2021. Lecture Notes in Computer Science(), vol 12742. Springer, Cham. https://doi.org/10.1007/978-3-030-77961-0_57
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