The predefined summarization methods, such as min , sum , and Max , are built using the more general-purpose reduce method.

预定义的汇总方法，例如min 、sum和max，是用更通用的reduce构建的。

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Taking the equilibrium of the capacity of each flow direction as the objective, a max-min optimization model is proposed to investigate fixed timing plan methods and dynamic timing plan methods.

以均衡交叉口各车流方向的通行能力为目标，建立了固定信号配时和动态信号配时的极大极小优化模型。

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Taking the equilibrium of the capacity of each flow direction as the objective, a max-min optimization model is proposed to investigate fixed timing plan methods and dynamic timing plan methods.

以均衡交叉口各车流方向的通行能力为目标，建立了固定信号配时和动态信号配时的极大极小优化模型。

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