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https://issues.apache.org/jira/browse/LUCENE-7287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15299149#comment-15299149
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Michael McCandless commented on LUCENE-7287:
--------------------------------------------

bq. There's no alternative open dictionary for Ukrainian with acceptable 
quality (I know since I've been working on it for last 10 years ).

OK thanks [~arysin] ... it looks like all Ukrainian dictionaries I can find, 
lead back to you!

Relicensing your data files (and maybe also the hunspell dictionaries) to ASL2 
or MIT or BSD would be wonderful, if you are able/allowed to!

I think we need to understand how your approach differs from the Hunspell 
tokenizer Lucene already provides.

See 
https://lucene.apache.org/core/6_0_0/analyzers-common/org/apache/lucene/analysis/hunspell/HunspellStemFilter.html
 for some details, and e.g. http://github.com/elastic/hunspell for how it's 
integrated into ES.  This is all quite new to me and I don't have an 
appreciation for what the differences are, in tokenization accuracy, heap used, 
tokens per second processing, etc.  I know [~rcmuir] spent quite a bit of time 
trying to keep heap usage low and tokenization performance high on the original 
hunspell issues.

> New lemma-tizer plugin for ukrainian language.
> ----------------------------------------------
>
>                 Key: LUCENE-7287
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7287
>             Project: Lucene - Core
>          Issue Type: New Feature
>          Components: modules/analysis
>            Reporter: Dmytro Hambal
>            Priority: Minor
>              Labels: analysis, language, plugin
>
> Hi all,
> I wonder whether you are interested in supporting a plugin which provides a 
> mapping between ukrainian word forms and their lemmas. Some tests and docs go 
> out-of-the-box =) .
> https://github.com/mrgambal/elasticsearch-ukrainian-lemmatizer
> It's really simple but still works and generates some value for its users.
> More: https://github.com/elastic/elasticsearch/issues/18303



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