Grey-WASPAS — Grey extension of WASPAS

GREY-WASPAS (Grey-WASPAS — Grey extension of WASPAS) is a ranking multi-criteria decision-making (MCDM) method introduced by Zavadskas, E. K., Turskis, Z., Antucheviciene, J., Zakarevicius, A. in 2012. It turns a decision matrix of alternatives scored on multiple criteria into a structured, reproducible result.