Abstract
In this paper the vertex p-median problem with balance constraints is studied (i.e. it is required to group a set of objects into groups, balanced with respect to some measures of activity). A Lagrangean relaxation scheme is proposed to obtain lower bounds and a primal heuristic is proposed to obtain upper bounds for the problem. A heuristic procedure is used to obtain feasible solutions for the problem. This heuristic procedure first provides feasible allocations given a set of medians, then improves the solutions using a median exchange procedure. Two set of instances are used to test all methods. Computational results show that the proposed methods provide good lower and upper bounds in reasonable computing times.
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Díaz, J.A., Luna, D.E. Primal and dual bounds for the vertex p-median problem with balance constraints. Ann Oper Res 258, 613–638 (2017). https://doi.org/10.1007/s10479-016-2255-8
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DOI: https://doi.org/10.1007/s10479-016-2255-8