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https://issues.apache.org/jira/browse/LUCENE-9112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Markus Jelsma updated LUCENE-9112:
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Description:
The OpenNLP tokenizer show weird behaviour when text contains spurious
punctuation such as having triple dots trailing a sentence...
# the first dot becomes part of the token, having 'sentence.' becomes the token
# much further down the text, a seemingly unrelated token is then suddenly
split up, in my example (see attached unit test) the name 'Baron' is split
into 'Baro' and 'n', this is the real problem
The problems never seem to occur when using small texts in unit tests but it
certainly does in real world examples. Depending on how many 'spurious' dots, a
completely different term can become split, or the same term in just a
different location.
I am not too sure if this is actually a problem in the Lucene code, but it is a
problem and i have a Lucene unit test proving the problem.
was:
The OpenNLP tokenizer show weird behaviour when text contains spurious
punctuation such as having triple dots trailing a sentence...
# the first dot becomes part of the token, having 'sentence.' becomes the token
# much further down the text, a seemingly unrelated token is then suddenly
split up, in my example the name 'Baron' is split into 'Baro' and 'n', this is
the real problem
The problems never seem to occur when using small texts in unit tests but it
certainly does in real world examples. Depending on how many 'spurious' dots, a
completely different term can become split, or the same term in just a
different location.
I am not too sure if this is actually a problem in the Lucene code, but it is a
problem and i have a Lucene unit test proving the problem.
> OpenNLP tokenizer is fooled by text containing spurious punctuation
> -------------------------------------------------------------------
>
> Key: LUCENE-9112
> URL: https://issues.apache.org/jira/browse/LUCENE-9112
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/analysis
> Affects Versions: master (9.0)
> Reporter: Markus Jelsma
> Priority: Major
> Labels: opennlp
> Fix For: master (9.0)
>
> Attachments: LUCENE-9112-unittest.patch
>
>
> The OpenNLP tokenizer show weird behaviour when text contains spurious
> punctuation such as having triple dots trailing a sentence...
> # the first dot becomes part of the token, having 'sentence.' becomes the
> token
> # much further down the text, a seemingly unrelated token is then suddenly
> split up, in my example (see attached unit test) the name 'Baron' is split
> into 'Baro' and 'n', this is the real problem
> The problems never seem to occur when using small texts in unit tests but it
> certainly does in real world examples. Depending on how many 'spurious' dots,
> a completely different term can become split, or the same term in just a
> different location.
> I am not too sure if this is actually a problem in the Lucene code, but it is
> a problem and i have a Lucene unit test proving the problem.
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