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Posted to solr-user@lucene.apache.org by alexw <aw...@crossview.com> on 2011/04/12 21:07:48 UTC

Spellchecking in the Chinese Lanugage

Hi,

I have been trying to get spellcheck to work in the Chinese language. So far
I have not had any luck. Can someone shed some light here as a general guide
line in terms of what need to happen?

I am using the CJKAnalyzer in the text field type and searching works fine,
but spelling does not work. Here are the things I have tried:

1. Put CJKAnalyzer in the "textSpell" field type.
2. Set the characterEncoding param to "utf-8" in the spellcheck search
component.
3. Using Luke, I can see the Chinese characters in the "spell" field in the
main index.
4. After building the spelling index, I don't see Chinese characters in the
"spellchecker" index, only terms in English.
5. Tried adding the NGramFilterFactory to the CJKAnalyzer with no luck
either.

Thanks!


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Re: Spellchecking in the Chinese Lanugage

Posted by alexw <aw...@crossview.com>.
Thanks Otis and Luke.

Yes it does make sense to spellcheck phrases in Chinese. Looks like the
default Solr spellCheck component is already doing some kind of NGram-ing.
When examining the spellCheck index, I did see gram1, gram2, gram3, gram4...
The problem is no Chinese terms were indexed into the spellChecker index,
only English terms.

Regards,

Alex

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Re: Spellchecking in the Chinese Lanugage

Posted by Luke Lu <ll...@vicaya.com>.
It doesn't make sense to spell check individual character sized words,
but makes a lot of sense for phrases. Due to pervasive use of pinyin
IM, it's very easy to write phrases that are totally wrong in
semantics and but "sounds" correct. n-gram should work if it doesn't
mangle the characters.

On Tue, Apr 12, 2011 at 12:47 PM, Otis Gospodnetic
<ot...@yahoo.com> wrote:
> Hi,
>
> Does spellchecking in Chinese actually make sense?  I once asked a native
> Chinese speaker about that and the person told me it didn't really make sense.
> Anyhow, with n-grams, I don't think this could technically work even if it made
> sense for Chinese, could it?
>
> Otis
> ----
> Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch
> Lucene ecosystem search :: http://search-lucene.com/
>
>
>
> ----- Original Message ----
>> From: alexw <aw...@crossview.com>
>> To: solr-user@lucene.apache.org
>> Sent: Tue, April 12, 2011 3:07:48 PM
>> Subject: Spellchecking in the Chinese Lanugage
>>
>> Hi,
>>
>> I have been trying to get spellcheck to work in the Chinese language.  So far
>> I have not had any luck. Can someone shed some light here as a general  guide
>> line in terms of what need to happen?
>>
>> I am using the CJKAnalyzer  in the text field type and searching works fine,
>> but spelling does not work.  Here are the things I have tried:
>>
>> 1. Put CJKAnalyzer in the "textSpell"  field type.
>> 2. Set the characterEncoding param to "utf-8" in the spellcheck  search
>> component.
>> 3. Using Luke, I can see the Chinese characters in the  "spell" field in the
>> main index.
>> 4. After building the spelling index, I  don't see Chinese characters in the
>> "spellchecker" index, only terms in  English.
>> 5. Tried adding the NGramFilterFactory to the CJKAnalyzer with no  luck
>> either.
>>
>> Thanks!
>>
>>
>> --
>> View this message in context:
>>http://lucene.472066.n3.nabble.com/Spellchecking-in-the-Chinese-Lanugage-tp2812726p2812726.html
>>
>> Sent  from the Solr - User mailing list archive at Nabble.com.
>>
>

Re: Spellchecking in the Chinese Lanugage

Posted by Otis Gospodnetic <ot...@yahoo.com>.
Hi,

Does spellchecking in Chinese actually make sense?  I once asked a native 
Chinese speaker about that and the person told me it didn't really make sense.
Anyhow, with n-grams, I don't think this could technically work even if it made 
sense for Chinese, could it?

Otis
----
Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch
Lucene ecosystem search :: http://search-lucene.com/



----- Original Message ----
> From: alexw <aw...@crossview.com>
> To: solr-user@lucene.apache.org
> Sent: Tue, April 12, 2011 3:07:48 PM
> Subject: Spellchecking in the Chinese Lanugage
> 
> Hi,
> 
> I have been trying to get spellcheck to work in the Chinese language.  So far
> I have not had any luck. Can someone shed some light here as a general  guide
> line in terms of what need to happen?
> 
> I am using the CJKAnalyzer  in the text field type and searching works fine,
> but spelling does not work.  Here are the things I have tried:
> 
> 1. Put CJKAnalyzer in the "textSpell"  field type.
> 2. Set the characterEncoding param to "utf-8" in the spellcheck  search
> component.
> 3. Using Luke, I can see the Chinese characters in the  "spell" field in the
> main index.
> 4. After building the spelling index, I  don't see Chinese characters in the
> "spellchecker" index, only terms in  English.
> 5. Tried adding the NGramFilterFactory to the CJKAnalyzer with no  luck
> either.
> 
> Thanks!
> 
> 
> --
> View this message in context: 
>http://lucene.472066.n3.nabble.com/Spellchecking-in-the-Chinese-Lanugage-tp2812726p2812726.html
>
> Sent  from the Solr - User mailing list archive at Nabble.com.
>