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[DOCS] Correct DFI docs regarding stop word removal (#53836)

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The documentation of DFI should recommend *not* to [remove stop words][1], since DFI is good at scoring queries that contain common terms: `the wall`, `the sun`, `the who`, etc.

[1]:https://lucene.apache.org/core/8_1_1/core/org/apache/lucene/search/similarities/DFISimilarity.html
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Ahmet Arslan 2020-03-24 17:45:53 +03:00 committed by James Rodewig
parent 7e25563303
commit 52062565a9
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docs/reference/index-modules/similarity.asciidoc
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@ -124,7 +124,7 @@ This similarity has the following options:
{lucene-core-javadoc}/org/apache/lucene/search/similarities/IndependenceSaturated.html[`saturated`],
{lucene-core-javadoc}/org/apache/lucene/search/similarities/IndependenceChiSquared.html[`chisquared`].
When using this similarity, it is highly recommended to remove stop words to get
When using this similarity, it is highly recommended *not* to remove stop words to get
good relevance. Also beware that terms whose frequency is less than the expected
frequency will get a score equal to 0.