Two-stage optimization of container assignment based on distribution dispersion

The optimization of resource scheduling for the container terminal is the key point of container handling. A new index called the distribution dispersion as the indicator of the optimization for the space scheduling of the production resources is touched, which is related to the container assignment model in the container terminal to improve the efficiency of the following works. The distribution dispersion is discussed both in the yard template scheduling and the block assignment in different dimensions. A two-stage optimization model which the first is a simulation model of the operations and the second stage is a mixed integer quadratic programming (MIQP) model is built to find the best assignment solution. A series of real production data are used to carry out the two-stage optimization. An improvement of the handling and ease of the congestion are shown from the result. The profound meanings of the distribution dispersion are obvious in the scheduling of the resource from our research. ©, 2015, Science Press. All right reserved.