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https://issues.apache.org/jira/browse/LUCENE-2899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13820085#comment-13820085
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Benson Margulies commented on LUCENE-2899:
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Fair enough. Solr URP's do this very well upstream of analysis. ES doesn't have 
the concept, perhaps it should. It clarifies the situation nicely to think of 
Lucene as serial token operations.

> Add OpenNLP Analysis capabilities as a module
> ---------------------------------------------
>
>                 Key: LUCENE-2899
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2899
>             Project: Lucene - Core
>          Issue Type: New Feature
>          Components: modules/analysis
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
>            Priority: Minor
>             Fix For: 4.6
>
>         Attachments: LUCENE-2899-RJN.patch, LUCENE-2899.patch, 
> OpenNLPFilter.java, OpenNLPTokenizer.java
>
>
> Now that OpenNLP is an ASF project and has a nice license, it would be nice 
> to have a submodule (under analysis) that exposed capabilities for it. Drew 
> Farris, Tom Morton and I have code that does:
> * Sentence Detection as a Tokenizer (could also be a TokenFilter, although it 
> would have to change slightly to buffer tokens)
> * NamedEntity recognition as a TokenFilter
> We are also planning a Tokenizer/TokenFilter that can put parts of speech as 
> either payloads (PartOfSpeechAttribute?) on a token or at the same position.
> I'd propose it go under:
> modules/analysis/opennlp



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