Missing values in traffic flow data should be imputed because complete data are needed for space-time data mining.
交通流量的时空数据挖掘需要完整的数据，因此必须处理交通流量数据中的缺失值。
It is greatly associated with the human culture mode, so it is very difficult to reorganize and process the complicated space-time data with the traditional archaeological methods of spatial analysis.
它和人类的文化模式具有深层联系，这使得传统的考古学空间分析方法难以整合、处理这些复杂的考古时空信息。
It is greatly associated with the human culture mode, so it is very difficult to reorganize and process the complicated space-time data with the traditional archaeological methods of spatial analysis.
它和人类的文化模式具有深层联系，这使得传统的考古学空间分析方法难以整合、处理这些复杂的考古时空信息。
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