A branch and bound algorithm for locating input and output points of departments on the block layout

Kim J-G () and Kim Y-D ()
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Kim J-G: Korea Advanced Institute of Science and Technology
Kim Y-D: Korea Advanced Institute of Science and Technology

Journal of the Operational Research Society, 1999, vol. 50, issue 5, 517-525

Abstract: Abstract We consider the problem of locating input and output (I/O) points of each department for a given layout. The objective of the problem is to minimise the total distance of material flows between the I/O points. Here, distances between the I/O points are computed as the lengths of the shortest path (not the rectilinear distances) between the I/O points. We developed a procedure to eliminate dominated candidate positions of I/O points that do not need to be considered. With this procedure, a large number of dominated candidate positions can be eliminated. A linear programming (LP) model for minimising the total rectilinear distance of flows is used to obtain a lower bound. Using the elimination procedure and the LP model, a branch and bound algorithm is developed to find an optimal location of the I/O points. Results from computational experiments show that the suggested algorithm finds optimal solutions in a very short time even for large-sized problems.

Keywords: facility layout; input and output points; branch and bound algorithm (search for similar items in EconPapers)
Date: 1999
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DOI: 10.1057/palgrave.jors.2600720

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