文本处理基础1.正则表达式(Regular Expressions)正则表达式是重要的文本预处理工具。
以下截取了部分正则写法:
2.分词(Word tokenization)
我们在进行每一次文本处理时都要对文本进行统一标准化(text normalization)处理。文本规模 How many words?
我们引入变量Type和Token
分别代表词典中的元素(an...
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编程语言 时间:
2015-08-26 20:14:22
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196
Text-processing tools likeawkandsedallow you to automatically perform a sequence of editing operations based on ascript. For this problem we consider ...
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其他好文 时间:
2015-03-10 21:08:48
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123
pattern scanning and text processing language
语法:
mawk [-F value] [-v var=value] [--] 'program text' [file...]
mawk [-F value] [-v var=value] [-f program-file] [--] [file...]
描述:
awk是一种...
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系统相关 时间:
2014-12-09 15:39:07
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292
Text-processing tools like awk and sed allow you to automatically perform a sequence of editing operations based on a script. For this problem we consider the specific case in which we want to
perfo...
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其他好文 时间:
2014-11-08 07:07:41
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215