Title
Finding rectilinear least cost paths in the presence of convex polygonal congested regions
Abstract
This paper considers the problem of finding the least cost rectilinear distance path in the presence of convex polygonal congested regions. We demonstrate that there are a finite, though exponential number of potential staircase least cost paths between a specified pair of origin-destination points. An upper bound for the number of entry/exit points of a rectilinear path between two points specified a priori in the presence of a congested region is obtained. Based on this key finding, a ''memory-based probing algorithm'' is proposed for the problem and computational experience for various problem instances is reported. A special case where polynomial time solutions can be obtained has also been outlined.
Year
DOI
Venue
2009
10.1016/j.cor.2007.10.023
Computers & OR
Keywords
DocType
Volume
exponential number,computational experience,rectilinear path,rectilinear distance metric.,least cost path,cost path,key finding,various problem instance,congested region,cost rectilinear distance path,convex polygonal congested region,specified pair,congested regions
Journal
36
Issue
ISSN
Citations 
3
Computers and Operations Research
3
PageRank 
References 
Authors
0.45
14
3
Name
Order
Citations
PageRank
Avijit Sarkar1112.02
Rajan Batta284989.39
Rakesh Nagi344345.82