整数规划是指规划中的变量（全部或部分）限制为整数，若在线性模型中，变量限制为整数，则称为整数线性规划。目前所流行的求解整数规划的方法往往只适用于整数线性规划。(Integer programming refers to the number of variables (all or part) in the planning that are limited to integers. In a linear model, the variables are limited to integers