# Mistake in DFI's documentation

**URL:** <https://discuss.elastic.co/t/mistake-in-dfis-documentation/223823>\
**Category:** Elasticsearch\
**Created:** [March 16, 2020, 9:18pm UTC](https://discuss.elastic.co/t/mistake-in-dfis-documentation/223823 "2020-03-16T21:18:40Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Ahmet\_Arslan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ahmet_arslan/32/3152_2.png) [@Ahmet\_Arslan](https://discuss.elastic.co/u/Ahmet_Arslan)\
**Post date:** [March 16, 2020, 9:18pm UTC](https://discuss.elastic.co/t/mistake-in-dfis-documentation/223823/1 "2020-03-16T21:18:40Z")

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Hi,

There is a mistake in the documentation of the DFI Similarity [1]. It currently says " it is highly recommended to remove stop words" but it should be the opposite: " it is highly recommended **not** to remove stop words" [2]. How do we get this fixed?

Thanks,  
Ahmet  
[1] [https://www.elastic.co/guide/en/elasticsearch/reference/7.6/index-modules-similarity.html#dfi](https://www.elastic.co/guide/en/elasticsearch/reference/7.6/index-modules-similarity.html#dfi)  
[2][https://lucene.apache.org/core/8\_1\_1/core/org/apache/lucene/search/similarities/DFISimilarity.html](https://lucene.apache.org/core/8_1_1/core/org/apache/lucene/search/similarities/DFISimilarity.html)

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [March 16, 2020, 9:26pm UTC](https://discuss.elastic.co/t/mistake-in-dfis-documentation/223823/2 "2020-03-16T21:26:37Z")

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There's an `edit` icon against that topic, you can make a PR there 🙂

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<div class="post-metadata">

**Author:** ![Ahmet\_Arslan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ahmet_arslan/32/3152_2.png) [@Ahmet\_Arslan](https://discuss.elastic.co/u/Ahmet_Arslan)\
**Post date:** [March 22, 2020, 10:31pm UTC](https://discuss.elastic.co/t/mistake-in-dfis-documentation/223823/3 "2020-03-22T22:31:16Z")

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Thanks Mark. Here is the [PR](https://github.com/elastic/elasticsearch/pull/53836).

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 19, 2020, 10:31pm UTC](https://discuss.elastic.co/t/mistake-in-dfis-documentation/223823/4 "2020-04-19T22:31:22Z")

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Closed on April 19, 2020, 10:31pm UTC

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