在分析城市生活垃圾收运系统特征的基础上，根据实际存在的城市生活垃圾收运方式，提出了垃圾收运车辆路线优化问题。

On the basis of the analysis of the characteristic of refuse collection system, it presents refuse collection vehicle routing problem according to the existing collection.

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本文基于现实的问题提出了一类特殊的车辆路线问题（VRP）—任意客户需求量的车辆路线问题（VRPFD）。

In this paper, we presented a kind of special vehicle routing problem(VRP) based on reality- vehicle routing problem with facultative demands(VRPFD).

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在分析车辆路径问题(VRP)现有启发式算法的基础上，建立了考虑路线安排的物流配送方案模型，并提出了求解该问题的一种改进遗传算法(IGA)。

Based on the analysis of the existing heuristic algorithm for the vehicle routing problem (VRP), a distribution model relevant to route arrangement was established.

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