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https://issues.apache.org/jira/browse/LUCENE-8097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-8097:
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Attachment: LUCENE-8097.patch
Here is a patch. It uses the relative error bound documented in formula 3.5
from Higham, Nicholas J. (1993), "The accuracy of floating point summation",
SIAM Journal on Scientific Computing, which is {{E = (n-1) * u}} if all values
are positive, where n is the number of doubles that are summed up and u is the
unit roundoff. This implies that two sums cannot differ by more than 2*E.
> Implement Scorer.maxScore() on disjunctions
> -------------------------------------------
>
> Key: LUCENE-8097
> URL: https://issues.apache.org/jira/browse/LUCENE-8097
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: master (8.0)
>
> Attachments: LUCENE-8097.patch
>
>
> We need to be careful with disjunctions since scores are not always summed up
> in the same order, which can result in different sums.
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