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A novel goal programming approach based on accuracy function of pythagorean fuzzy sets
OPSEARCH - - 2023
Goal programming (GP) is a well-established optimization methodology used to solve multi-objective problems. This paper outlines a novel goal programming approach that aims to improve the effectiveness of the traditional intuitionistic goal programming method. The proposed approach incorporates the concept of pythagorean fuzzy logic. Accuracy function of the pythagorean fuzzy sets has been used to......
Multi-criteria trapezoidal valued intuitionistic fuzzy decision making with Choquet integral based TOPSIS
OPSEARCH - Tập 51 - Trang 98-129 - 2013
A generalized trapezoidal-valued intuitionistic fuzzy geometric aggregation operator is proposed which is then used to aggregate decision makers’ opinions in group decision making process. An extension of TOPSIS, a multi-criteria trapezoidal-valued intuitionistic fuzzy decision making technique, to a group decision environment is also proposed, where inter-dependent or interactive characteristics ......
A quantity flexibility contract in a supply chain with price dependent demand
OPSEARCH - Tập 51 - Trang 219-234 - 2013
We consider a quantity flexibility contract in a supply chain, under price dependent demand. The demand is random and follows a multiplicative model. We show that the retail price that maximizes expected retailer profits, is higher than the price that would maximize profits if there was no demand uncertainty. We then show that if the wholesale price lies in a certain range, there is a positive buy......
Mixed integer linear programming model for multi-commodity multi-depot inventory routing problem
OPSEARCH - Tập 49 - Trang 413-429 - 2012
Multi-Commodity, Multi-Depot Inventory Routing Problem (MCMDIRP) is relevant to vendors who have to make decisions about timing of delivery, size of shipment and routing for multiple commodities from multiple manufacturing plants to warehouses in a Vendor Managed Inventory (VMI) scenario. We propose a Mixed Integer Linear Program (MILP) for the MCMDIRP. The model is tested on a real life case stud......
A note on ranking of L-R fuzzy numbers
OPSEARCH - Tập 50 - Trang 282-296 - 2012
Numerous ranking methods have been proposed and investigated so-far. Most of the ranking methods discussed only normal fuzzy numbers, but in many cases (such as risk analysis, approximate reasoning, etc.,) the normal fuzzy number is not adequate. In this paper, we introduced a new ranking method based on weighted expected values of the fuzzy numbers which can be applied for both normal and non-nor......
Tổng số: 758
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