# Custom term frequencies

**URL:** <https://discuss.elastic.co/t/custom-term-frequencies/177898>\
**Category:** Elasticsearch\
**Created:** [April 22, 2019, 8:24pm UTC](https://discuss.elastic.co/t/custom-term-frequencies/177898 "2019-04-22T20:24:29Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![amyc](https://avatars.discourse-cdn.com/v4/letter/a/ea5d25/32.png) [@amyc](https://discuss.elastic.co/u/amyc)\
**Post date:** [April 22, 2019, 8:24pm UTC](https://discuss.elastic.co/t/custom-term-frequencies/177898/1 "2019-04-22T20:24:30Z")

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Hi;  
I found this new feature "custom term frequencies" in lucene 7 [LUCENE-7854] (also related to [LUCENE-7866]). I am interested in using that feature to replace payload, as my custom payload Similarity plugin stopped working after migrate to ES 7.  
Is this lucene feature available in ES 7? If not, any plan to incorporate it into a future version in Elasticsearch?

yifeng

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<div class="post-metadata">

**Author:** ![amyc](https://avatars.discourse-cdn.com/v4/letter/a/ea5d25/32.png) [@amyc](https://discuss.elastic.co/u/amyc)\
**Post date:** [April 24, 2019, 1:39pm UTC](https://discuss.elastic.co/t/custom-term-frequencies/177898/2 "2019-04-24T13:39:28Z")

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Looks like this feature is in ES 7, is called "rank\_features".

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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:** [May 22, 2019, 1:39pm UTC](https://discuss.elastic.co/t/custom-term-frequencies/177898/3 "2019-05-22T13:39:31Z")

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Closed on May 22, 2019, 1:39pm UTC

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