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Posted to issues@opennlp.apache.org by "Hyosup Shim (Updated) (JIRA)" <ji...@apache.org> on 2012/03/20 18:27:39 UTC

[jira] [Updated] (OPENNLP-471) DictionaryNameFinder has HASHing issues

     [ https://issues.apache.org/jira/browse/OPENNLP-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyosup Shim updated OPENNLP-471:
--------------------------------

    Comment: was deleted

(was: I made some changes (for names of variables) to make easier to read.

Please review my patch.)
    
> DictionaryNameFinder has HASHing issues
> ---------------------------------------
>
>                 Key: OPENNLP-471
>                 URL: https://issues.apache.org/jira/browse/OPENNLP-471
>             Project: OpenNLP
>          Issue Type: Bug
>          Components: Name Finder
>            Reporter: James Kosin
>            Assignee: James Kosin
>              Labels: dictionary, namefinder
>             Fix For: tools-1.5.3
>
>
> The DictionaryNameFinder has issues finding multi-token names when the dictionary is searched a token at a time by the find() method.  If, the dictionary doesn't have a single (or shorter) token match available in the dictionary.
> Having a dictionary with {"folic", "acid"} without an entry for {"folic"} will cause the find() method to totally skip the fact there is a longer match possible.
> Thanks to Jim for pushing this and to my debugging skills to find.
> Two possiblilites come to mind:
> 1)  I don't really like, is we turn it into a larger problem by trying longer matches when shorter ones don't match.  Unfortunately, this turns quickly into a race to see who can wait longer.
> 2)  A way of returning a possible match that may need exploring, or a look-ahead type system to say we don't match "folic" but if you have "acid" after "folic" we have a match for that in the dictionary.
> 3)  Leave it as is and modify the dictionary to add shorter terms to the dictionary... maybe marking as not-a-valid entry so we can know we need a longer match.

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