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From "Boris Galitsky (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OPENNLP-331) disagreement between POS of parser and POStagger
Date Thu, 01 Dec 2011 23:08:40 GMT

     [ https://issues.apache.org/jira/browse/OPENNLP-331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Boris Galitsky updated OPENNLP-331:
-----------------------------------

    Attachment: patch.OPENNLP-331-1.txt

there are now two versions of Parsing -> Chunking -> Similarity algorithms:

ParserChunker2MatcherProcessor (older, slower, but more accurate)
This algorithm passes all current tests

ParserPure2MatcherProcessor (does not use separate chunking, faster, but corrects less chunking
errors)

                
> disagreement between POS of parser and POStagger
> ------------------------------------------------
>
>                 Key: OPENNLP-331
>                 URL: https://issues.apache.org/jira/browse/OPENNLP-331
>             Project: OpenNLP
>          Issue Type: Bug
>          Components: Similarity
>            Reporter: Boris Galitsky
>            Assignee: Boris Galitsky
>         Attachments: patch.OPENNLP-331-1.txt, patch.OPENNLP-331.txt
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> ParserTool.parseLine(sentence, parser, 1) gives:
> How can I get short focus zoom lens for digital camera
> type = S
> 	type = WHADVP
> 		type = WRB, word = How
> 	type = SQ
> 		type = MD, word = can
> 		type = NP
> 			type = PRP, word = I
> 		type = VP
> 			type = VB, word = get
> 			type = NP
> 				type = JJ, word = short
> 				type = NN, word = focus
> 				type = NN, word = zoom   // ZOOM is NOUN: correct
> 				type = NN, word = lens
> 			type = PP
> 				type = IN, word = for
> 				type = NP
> 					type = JJ, word = digital
> 					type = NN, word = camera
> BUT
> new POSTaggerME(model).tag(toks);
>  gives
> [WRB, MD, PRP, VB, JJ, NN, VBN, NN, IN, JJ, NN]
>                                         ****
>                      VBN is a problem!  
> zoom is NOT VBN - Verb, past participle

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