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https://issues.apache.org/jira/browse/LUCY-183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146419#comment-13146419
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Marvin Humphrey commented on LUCY-183:
--------------------------------------
That snippet shows a problem with highlighting, which is almost certainly
related to LUCY-182 rather than this issue.
The test failure in question also includes score differences, which
are indeed likely a result of the changes made in this issue. However,
scores should be more accurate now, so there's shouldn't be a need
to reopen. The downstream test failures are regrettable, but the exact
scores generated by Lucy are not part of our public API.
In contrast, it looks like we're going to have to reopen LUCY-182.
> Eliminate spurious "extra" query normalization
> ----------------------------------------------
>
> Key: LUCY-183
> URL: https://issues.apache.org/jira/browse/LUCY-183
> Project: Lucy
> Issue Type: Bug
> Components: Search
> Affects Versions: 0.1.0 (incubating), 0.2.0 (incubating), 0.2.1
> (incubating)
> Reporter: Marvin Humphrey
> Assignee: Marvin Humphrey
> Fix For: 0.2.2 (incubating), 0.3.0 (incubating)
>
> Attachments: normalization.patch
>
>
> Query normalization is supposed to scale all scores uniformly by a simple
> multiplier, but the child nodes in complex queries are presently getting
> "extra" normalization applied to them. This has the effect of scaling
> different subqueries by different amounts, changing the balance of the
> subqueries within a complex query, interfering with IDF weighting and subtly
> degrading relevancy.
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