Djordje Dugosija

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This paper considers the multi level uncapacitated facility location problem (MLUFLP). A new mixed integer linear programming (MILP) formulation is presented and validity of this formulation is given. Experimental results are performed on instances known from literature. The results achieved by CPLEX and Gurobi solvers, based on the proposed MILP(More)
In this paper we present new evolutionary approach for solving the Routing and Carrier Selection Problem (RCSP). New encoding scheme is implemented with appropriate objective function. This approach in most cases keeps the feasibility of individuals by using specific representation and modified genetic operators. The numerical experiments were carried out(More)
In this paper we present a variable neighborhood search algorithm (VNS) for solving Multiple Level Warehouse Layout Problem (MLWLP). The algorithm deals with a specific representation of the solution, enabling the effective application of the shaking and local search procedures. System of neighborhoods changes the assignment ordering for an increasing(More)
In this paper is described the modification of the existing evolutionary approach for Discrete Ordered Median Problem (DOMP), in order to solve the Balanced Location Problem (LOBA). Described approach, named HGA1, includes a hybrid of Genetic Algorithm (GA) and a well-known Fast Interchange Heuristic (FIH). HGA1 uses binary encoding schema. Also, new(More)
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