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https://issues.apache.org/jira/browse/LUCENE-8249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16439293#comment-16439293
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Alan Woodward commented on LUCENE-8249:
---------------------------------------
Looks like a small penalty on sloppy phrases, and a slightly less small boost
on exact phrases. Or possibly just noise.
{code}
TaskQPS baseline StdDevQPS my_modified_version StdDev
Pct diff
HighSloppyPhrase 589.78 (5.4%) 573.54 (7.9%)
-2.8% ( -15% - 11%)
OrHighHigh 1174.38 (8.6%) 1146.22 (7.5%)
-2.4% ( -17% - 15%)
MedSloppyPhrase 1328.47 (4.3%) 1302.80 (5.2%)
-1.9% ( -10% - 7%)
AndHighLow 3138.65 (8.5%) 3087.05 (7.2%)
-1.6% ( -15% - 15%)
LowSpanNear 1962.66 (5.3%) 1931.60 (5.8%)
-1.6% ( -12% - 10%)
Prefix3 1027.12 (7.8%) 1011.50 (8.0%)
-1.5% ( -16% - 15%)
Wildcard 1842.34 (5.8%) 1821.58 (4.2%)
-1.1% ( -10% - 9%)
PKLookup 392.44 (4.6%) 388.12 (4.6%)
-1.1% ( -9% - 8%)
HighTermDayOfYearSort 1122.38 (6.2%) 1111.20 (7.3%)
-1.0% ( -13% - 13%)
HighTerm 4343.88 (8.5%) 4316.70 (5.9%)
-0.6% ( -13% - 14%)
IntNRQ 1319.13 (2.5%) 1313.00 (2.4%)
-0.5% ( -5% - 4%)
OrHighLow 2157.05 (4.2%) 2148.60 (4.9%)
-0.4% ( -9% - 9%)
HighTermMonthSort 3568.59 (5.9%) 3563.38 (5.7%)
-0.1% ( -11% - 12%)
OrHighMed 1276.34 (11.4%) 1274.61 (11.2%)
-0.1% ( -20% - 25%)
LowPhrase 1567.69 (4.7%) 1567.03 (5.5%)
-0.0% ( -9% - 10%)
MedTerm 5682.98 (8.2%) 5685.03 (9.3%)
0.0% ( -16% - 19%)
AndHighHigh 1020.12 (4.6%) 1023.48 (4.7%)
0.3% ( -8% - 10%)
LowSloppyPhrase 885.26 (4.4%) 889.20 (5.2%)
0.4% ( -8% - 10%)
AndHighMed 1287.27 (6.0%) 1296.46 (5.0%)
0.7% ( -9% - 12%)
Fuzzy1 493.78 (4.4%) 497.65 (2.9%)
0.8% ( -6% - 8%)
Fuzzy2 83.87 (20.0%) 85.02 (18.4%)
1.4% ( -30% - 49%)
Respell 391.63 (4.6%) 397.30 (4.1%)
1.4% ( -6% - 10%)
LowTerm 6098.16 (6.0%) 6202.87 (5.4%)
1.7% ( -9% - 13%)
HighSpanNear 773.18 (10.9%) 786.87 (8.4%)
1.8% ( -15% - 23%)
MedSpanNear 937.52 (6.1%) 960.49 (4.2%)
2.4% ( -7% - 13%)
HighPhrase 1035.86 (3.8%) 1101.79 (4.9%)
6.4% ( -2% - 15%)
MedPhrase 997.89 (7.2%) 1068.68 (5.0%)
7.1% ( -4% - 20%)
{code}
> Add matches to exact PhraseQuery and MultiPhraseQuery
> -----------------------------------------------------
>
> Key: LUCENE-8249
> URL: https://issues.apache.org/jira/browse/LUCENE-8249
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Priority: Major
> Attachments: LUCENE-8249.patch, LUCENE-8249.patch
>
>
> ExactPhraseScorer can be rejigged fairly easily to expose a MatchesIterator
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