missing values 漏失值
- Within these files, missing values are encoded as the string "None".
在这些文件中,没有的值用字符串 "None" 表示。 - When you press Enter at this point, you will be prompted for the missing values that are required.
如果在这里按 Enter,会提示输入缺少的必需值。 - As with a normal aggregate initializer, missing values are treated as though they'd been given 0 as an initializer.
使用普通的聚合初始化程序时,缺少的值会被认为它们已经被初始化程序指定为 0 来处理。
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