Integer programming method for the pre-marshalling problem in container yards based on transcoding technology
In order to improve loading efficiency,focusing on the pre-marshalling problem and taking the priority of the slot-storage export containers as the main decision variable,a pri-ority model for the pre-marshalling problem of export contain-ers in storage yard was proposed. Considering containers flip-ping operations as the core objective of the decision process,a transcoding technique was introduced based on the properties of decimal and binary conversion. Combining with existing re-search models and the proposed integer programming model,a set of transcoding models were constructed. By testing on ex-isting data sets,compared with existing models,the proposed priority model can reduce the average solution time by 75.66%,while the solution time of the transcoding model group is significantly lower than that of the original model group,in addition that the maximum solution efficiency is in-creased by 182.5%.