Multi-objective transportation problem under type-2 trapezoidal fuzzy numbers with parameters estimation and goodness of fit

    Murshid Kamal Affiliation
    ; Ali Alarjani Affiliation
    ; Ahteshamul Haq Affiliation
    ; Faiz Noor Khan Yusufi Affiliation
    ; Irfan Ali Affiliation


The problem of transportation in real-life is an uncertain multi-objective decision-making problem. In particular, by taking into account the conflicting objectives, Decision-Makers (DMs) are looking for the best transport set up to determine the optimum shipping quantity subject to certain capacity constraints on each route. This paper presented a Multi-Objective Transportation Problem (MOTP) where the objective functions are considered as Type-2 trapezoidal fuzzy numbers (T2TpFN), respectively. Demand and supply in constraints are in multi-choice and probabilistic random variables, respectively. Also considered the “rate of increment in Transportation Cost (TC) and rate of decrement in profit on transporting the products from ith sources to jth destinations due to” (or additional cost) of each product due to the damage, late deliveries, weather conditions, and any other issues. Due to the presence of all these uncertainties, it is not possible to obtain the optimum solution directly, so first, we need to convert all these uncertainties from the model into a crisp equivalent form. The two-phase defuzzification technique is used to transform T2TpFN into a crisp equivalent form. Multi-choice and probabilistic random variables are transformed into an equivalent value using Stochastic Programming (SP) approach and the binary variable, respectively. It is assumed that the supply and demand parameter follows various types of probabilistic distributions like Weibull, Extreme value, Cauchy and Pareto, Normal distribution, respectively. The unknown parameters of probabilistic distributions estimated using the maximum likelihood estimation method at the defined probability level. The best fit of the probability distributions is determined using the Akaike Information Criterion (AIC) and the Bayesian Information Criterion (BIC), respectively. Using the Fuzzy Goal Programming (FGP) method, the final problem is solved for the optimal decision. A case study is intended to provide the effectiveness of the proposed work.

Keyword : multi-objective optimization, transportation problem, fuzzy goal programming, multi-choice, maximum likelihood estimation, Akaike information criterion, Bayesian information criterion, stochastic programming

How to Cite
Kamal, M., Alarjani, A., Haq, A., Yusufi, F. N. K., & Ali, I. (2021). Multi-objective transportation problem under type-2 trapezoidal fuzzy numbers with parameters estimation and goodness of fit. Transport, 36(4), 317-338.
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Nov 24, 2021
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