生鲜电商配送的开放式时变车辆路径问题研究Research on Open Time-Dependent Vehicle Routing Problem of Fresh Food E-commerce Distribution
付朝晖;刘长石;
摘要(Abstract):
针对生鲜电商配送的"最后一公里"难题,考虑到生鲜农产品的易腐易损性与生鲜电商通常采用普通车辆配送等现实情况,引入常温条件下生鲜农产品的鲜活度度量函数;分析城市路网的时变特性,设计时变路网条件下的车辆行驶时间计算方法;综合考虑客户需求量、时间窗、生鲜农产品送达客户时的鲜活度、开放式车辆路径与车辆灵活出发时间等因素,以总配送成本最小为目标构建具有鲜活度限制的开放式时变车辆路径问题优化模型,并根据模型特点设计一种改进蚁群算法求解。仿真实验结果表明:与封闭式车辆路径策略相比较,基于开放式车辆路径策略的改进蚁群算法能有效降低生鲜电商的总配送成本,减少车辆使用数量,缩短车辆行驶距离,具有合理性与可行性。
关键词(KeyWords): 时变路网;生鲜农产品;开放式车辆路径问题;改进蚁群算法
基金项目(Foundation): 国家社科基金一般项目(17BJL091);; 湖南省社科基金(16YBG004,18YBA267);; 湖南省教育厅项目(18A297,17C0881);; 湖南省社会科学成果评审委员会项目(GLX235)
作者(Author): 付朝晖;刘长石;
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DOI:
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