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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4253) ThaiAnalyzer fail to tokenize word.
Date Fri, 27 Jul 2012 11:39:35 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13423816#comment-13423816
] 

Robert Muir commented on LUCENE-4253:
-------------------------------------

{quote}
This makes retrieval and proper recognition of the documents which contain the phrase "SOME
THAI PHRASE" almost impossible.
{quote}

Right, i just mean the problem is general. 'a' is a english stopword but this can screw up

things like 'L.A.' (Los Angeles) and other "terms", because of how they are tokenized. This
is just a common tradeoff.

Its just that with the current Thai tokenizer and the overly aggressive list, its much more
pronounced.

{quote}
I don't have a chance to view the thesis that research over those stop words. In my own opinion,
the only set of words that shall not cause a truncated is a set of conjunction words.
{quote}

Yes, this paper seems difficult to get a hold of. 

But I think its definitely a good idea should try to reduce the current list to not be so
large. It should be
less aggressive.


                
> ThaiAnalyzer fail to tokenize word.
> -----------------------------------
>
>                 Key: LUCENE-4253
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4253
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: modules/analysis
>    Affects Versions: Realtime Branch
>         Environment: Windows 7 SP1.
> Java 1.7.0-b147
>            Reporter: Nattapong Sirilappanich
>
> Method 
> protected TokenStreamComponents createComponents(String,Reader)
> return a component that unable to tokenize Thai word.
> The current return statement is:
> return new TokenStreamComponents(source, new StopFilter(matchVersion,        result,
stopwords));
> My experiment is change the return statement to:
> return new TokenStreamComponents(source, result);
> It give me a correct result.

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