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University of Washington Ling472 Introduction to Computational Linguistics Lecture 1: Introduction RegEx Examples • Find the English stops followed by a liquid grep [PDKBDGpdkbdg][lr] • Find any two vowels together grep [aeiou][aeiou] • Find the same letter, repeated egrep '([a‐z])\1' • Lines where sentences end with ‘to’ egrep '( |^)to.' Monday, April 1, 2013 58
University of Washington Ling472 Introduction to Computational Linguistics Lecture 1: Introduction Primitive tokenization $ cat moby_dick.html | # echo the text tr [:upper:] [:lower:] | # convert to lower case tr ' ' '\n' | # put each word on a line grep ‐v ^$ | # get rid of blank lines grep ‐v '
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Slides - University of Washington

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