然后，运用改进的粒子群算法分派并优化配送线路。

Secondly we propose a modified particle swarm optimization to arrange customers visiting sequences for every vehicle.

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在电子商务交易平台下的物流配送复杂程度较高，要求能够快速响应配送需求，并且配送车辆行驶线路优化问题突出。

Under the E-commerce transaction platform, the distribution becomes more complicated. It requests fast response, and the vehicle routing problem is prominent.

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