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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-18374) Incorrect words in StopWords/english.txt
Date Thu, 01 Dec 2016 10:55:58 GMT

    [ https://issues.apache.org/jira/browse/SPARK-18374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15711645#comment-15711645
] 

Sean Owen commented on SPARK-18374:
-----------------------------------

Seems OK to me and to remove the stems like won.

> Incorrect words in StopWords/english.txt
> ----------------------------------------
>
>                 Key: SPARK-18374
>                 URL: https://issues.apache.org/jira/browse/SPARK-18374
>             Project: Spark
>          Issue Type: Bug
>          Components: ML
>    Affects Versions: 2.0.1
>            Reporter: nirav patel
>
> I was just double checking english.txt for list of stopwords as I felt it was taking
out valid tokens like 'won'. I think issue is english.txt list is missing apostrophe character
and all character after apostrophe. So "won't" becam "won" in that list; "wouldn't" is "wouldn"
.
> Here are some incorrect tokens in this list:
> won
> wouldn
> ma
> mightn
> mustn
> needn
> shan
> shouldn
> wasn
> weren
> I think ideal list should have both style. i.e. won't and wont both should be part of
english.txt as some tokenizer might remove special characters. But 'won' is obviously shouldn't
be in this list.
> Here's list of snowball english stop words:
> http://snowball.tartarus.org/algorithms/english/stop.txt



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