Commentary on “Evaluating the criteria for human resource for science and technology (HRST) based on an integrated fuzzy AHP and fuzzy DEMATEL approach”

Chou et al. (Applied Soft Computing 12 (2012) 64-71) used combination of fuzzy AHP (Analytic Hierarchy Process) and fuzzy DEMATEL (Decision Making Trial and Evaluation Laboratory) in human resource for science and technology (HRST). For applying the fuzzy DEMATEL method there is a need to find the multiplicative inverse of a fuzzy matrix. In this paper, it is pointed out that the method, used by Chou et al. for evaluating the multiplicative inverse of a fuzzy matrix, is not valid. Hence, the method, proposed by Chou et al., is not valid. Furthermore, it is pointed out that this flaw can be resolved by using the existing method (International Journal of Computer Mathematics, 86 (8), (2009) 1433-1452) to find the multiplicative inverse of a fuzzy matrix.