Vehicle Routing with Cross-Docking

The Vehicle Routing Problem with Cross-Docking is a variant of the classic vehicle routing problem. In this case a cross dock is used to consolidate loads to maximize the utilization of the fleet of vehicles. The dataset presented here was originally developed for the paper "Vehicle routing with cross-docking" published in Journal of Operational Research Society, vol 60, issue 12, pp 1708-1718 (2009).A link to the technical report of the paper is provided here. The section on Data from page 13 provides a description of the data.DESCRIPTION OF DATA FILESEach VRPCD instance corresponds to two data files: the location file (e.g. Data50_d.txt) and time windows: (e.g. Data50_d_tw.txt)The format of location file:It contains n+2 lines:- the first line:number of requests, vehicle capacity, start time for each vehicle, end time for each vehicle, vehicle speed, preparation time for unloading/reloading, time for unloading/reloading each pallet- the second line (terminal information): id, xccord, yccord, xccord, yccord, demandthe rest (request information)for each request i (i=1,...,n): request id, xccord of delivery node, yccord of delivery node, xccord of pickup node, yccord of pickup node, demand of the request The format of time windows file:It contains n linesfor each request i (i=1,...,n): earliest service time for the delivery node, latest service time for the delivery node, earliest service time for the pickup node, latest service time for the pickup node,