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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-2001) wordnet parsing bug
Date Wed, 21 Oct 2009 16:20:00 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Muir updated LUCENE-2001:
--------------------------------

    Attachment: LUCENE-2001_branch.patch

patch for the 2.9 branch (same just without java 5 constructs).

I will commit the one to trunk shortly, can someone help with this one, if we think it should
be fixed in 2.9.1 also?

> wordnet parsing bug
> -------------------
>
>                 Key: LUCENE-2001
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2001
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/*
>    Affects Versions: 2.9
>            Reporter: Robert Muir
>            Priority: Minor
>         Attachments: LUCENE-2001.patch, LUCENE-2001_branch.patch
>
>
> A user reported that wordnet parses the prolog file incorrectly.
> Also need to check the wordnet parser in the memory contrib for this problem.
> If this is a false alarm, i'm not worried, because the test will be the first unit test
wordnet package ever had.
> {noformat}
> For example, looking up the synsets for the
> word "king", we get:
> java SynLookup wnindex king
> baron
> magnate
> mogul
> power
> queen
> rex
> scrofula
> struma
> tycoon
> Here, "scrofula" and "struma" are extraneous. This happens because, the line
> parser code in Syns2Index.java interpretes the two consecutive single quotes
> in entry s(114144247,3,'king''s evil',n,1,1) in  wn_s.pl file, as
> termination
> of the string and separates into "king". This entry concerns
> synset of words "scrofula" and "struma", and thus they get inserted in the
> synset of "king". *There 1382 such entries, in wn_s.pl* and more in other
> WordNet
> Prolog data-base files, where such use of two consecutive single quotes
> appears.
> We have resolved this by adding a statement in the line parsing portion of
> Syns2Index.java, as follows:
>            // parse line
>            line = line.substring(2);
>           * line = line.replaceAll("\'\'", "`"); // added statement*
>            int comma = line.indexOf(',');
>            String num = line.substring(0, comma);  ... ... etc.
> In short we replace "''" by "`" (a back-quote). Then on recreating the
> index, we get:
> java SynLookup zwnindex king
> baron
> magnate
> mogul
> power
> queen
> rex
> tycoon
> {noformat}

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