Z. L. Yue - College of Mathematics and Computer Science, Guangdong Ocean University, Zhanjiang, Guangdong, China
C. Yue - College of Mathematics and Computer Science, Guangdong Ocean University, Zhanjiang, Guangdong, China
X. H. Peng - College of Mathematics and Computer Science, Guangdong Ocean University, Zhanjiang, Guangdong, China
W. Wu - College of Mathematics and Computer Science, Guangdong Ocean University, Zhanjiang, Guangdong, China

Software quality is an important research direction in software engineering domain,  which is a multi-dimen-sional evaluation problem.  The VIsekriterijumska optimizacija i KOmpromisno Resenje (VIKOR) technique is a comprehensive  method for handing the multi-dimensional evaluation problems. The projection is commonly used to measure the closeness between two decision objects in decision science.  However, two research questions are found in this work: (۱) There is no specific concrete regret  matrix in current VIKOR technique; (۲) The existing projection measures are not  always reasonable in interval-valued intuitionistic fuzzy setting. Two research gaps are filled  systematically in this paper: (۱) A specific concrete regret matrix is provided in this extended VIKOR-based group decision-making method; (۲) A new normalized projection measure is provided in order to measure the closeness between two decision matrices.  The decision procedures are also provided in this paper. A practical application to  the software quality assessment is introduced.  Some experimental comparisons are provided in order to illustrate the feasibility and practicability of introduced method.

Extended VIKOR method, normalized projection, group decision-making, interval-valued intuitionistic fuzzy number, software quality assessment