正则表达式在Preprocessing中输入

The preprocessing command is required if the function gets is called. A:

The preprocessing command is required if the string operator function (e.g. isupper) is called. A:

Which of the following is not a basic procedure for text mining? A: Text preprocessing B: Text classification C: Text transformation D: Text mining

数据预处理（Data Preprocessing）是指在主要的处理和分析以前对数据进行的一些必要的加工整理，主要目标是清理异常值、纠正错误数据、统一数据格式等。

Which one of the following statements is right? A: Macro substitution does not occupy the executing time, just occupies the compiling time. B: Multiple preprocessing directives can appear in the same line. C: When using macros with arguments, the argument type should be consistent with the macro definition. D: The compiler will do preliminary grammar examination during preprocessing.

​数据预处理（Data Preprocessing）是指在对数据进行数据挖掘的主要处理以前，先对原始数据进行必要的（ ）等一系列的处理工作，以达到挖掘算法进行知识获取研究所要求的最低规范和标准。​ A: 清理 B: 集成 C: 转换 D: 离散 E: 归约