The algorithm includes selection, expansion and mutation operations, expansion is used for local search and mutation is used for global search in solution space.

算法包括选择、扩展和突变操作，扩展和突变操作分别在解空间中局部和全局范围内搜索最优解。

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First, the concept of neighborhood is introduced, and two new algorithm parameters of expansion radius and mutation radius are defined to construct a small neighborhood and a large neighborhood.

首先引入了邻域概念，并通过定义扩展半径和突变半径两个新算法参数而构造了较小和较大两个邻域。

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First, the concept of neighborhood is introduced, and two new algorithm parameters of expansion radius and mutation radius are defined to construct a small neighborhood and a large neighborhood.

首先引入了邻域概念，并通过定义扩展半径和突变半径两个新算法参数而构造了较小和较大两个邻域。

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