An interval data envelopment analysis (DEA) model was first defined.

定义了区间数据包络分析(DEA)模型。

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At a regular collection interval, data is gathered about the host and guests.

关于主机和客户的数据会定期收集。

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At a regular collection interval, data is gathered about the host and guests.

关于主机和客户的数据会定期收集。

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