This study examines the Grey Fuzzy Transportation Problem, which represents decision-making processes under uncertainty
in the transportation problem, a significant issue in the logistics sector and academic studies. The study provides
comprehensive analysis and recommendations that contribute to the effective solution of the Grey Fuzzy Transportation
Problem and better management of uncertain transportation problems. The research compares four different optimization
methods, Closed Path Method, Interval Optimization, Robust Optimization, and Interval Optimization with Penalty
Function, for the Grey Fuzzy Transportation Problem (GFTP). The analyses were conducted on a total of 40 test problems
across four different problem sizes: small, medium, large, and extra-large. The results showed that the Interval
Optimization and Robust Optimization methods demonstrated the best performance in terms of solution quality and
computation time. Specifically, detailed analyses of the Interval Optimization with Penalty Function method confirmed
that this method provides an effective and consistent solution approach for the GFTP.
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