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https://issues.apache.org/jira/browse/LUCENE-1908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12754731#action_12754731
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Ted Dunning commented on LUCENE-1908:
-------------------------------------
I apologize for complaining here without actually editing this text to
illustrate what I would rather see, but the new text seems to say things like
"the scoring function is like this (formula) except that it isn't because it is
really like this (other-formula) but that isn't really right either because it
is like this (still-another-formula) which actually isn't right because of
fields and <mumble>".
There are also many small errors such as claiming that tf is *proportional* to
term frequency and idf is *proportional* to inverse of document frequency.
Proportional means that there is a linear relationship which is definitely not
the case here. It would be better to say tf usually increases with increasing
term frequency, although occasionally a constant might be used. IDF, on the
other hand, decreases with increasing document frequency.
> Similarity javadocs for scoring function to relate more tightly to scoring
> models in effect
> -------------------------------------------------------------------------------------------
>
> Key: LUCENE-1908
> URL: https://issues.apache.org/jira/browse/LUCENE-1908
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Reporter: Doron Cohen
> Assignee: Doron Cohen
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1908.patch, LUCENE-1908.patch, LUCENE-1908.patch
>
>
> See discussion in the related issue.
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