# Could not find similarity in KnnQuery in Java Client?

**URL:** <https://discuss.elastic.co/t/could-not-find-similarity-in-knnquery-in-java-client/343002>\
**Category:** Elasticsearch\
**Created:** [September 14, 2023, 4:10am UTC](https://discuss.elastic.co/t/could-not-find-similarity-in-knnquery-in-java-client/343002 "2023-09-14T04:10:30Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![csplrj](https://avatars.discourse-cdn.com/v4/letter/c/ed655f/32.png) [@csplrj](https://discuss.elastic.co/u/csplrj)\
**Post date:** [September 14, 2023, 4:10am UTC](https://discuss.elastic.co/t/could-not-find-similarity-in-knnquery-in-java-client/343002/1 "2023-09-14T04:10:30Z")

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Could not find similarity in KnnQuery in Java Client?

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<div class="post-metadata">

**Author:** ![csplrj](https://avatars.discourse-cdn.com/v4/letter/c/ed655f/32.png) [@csplrj](https://discuss.elastic.co/u/csplrj)\
**Post date:** [September 14, 2023, 12:54pm UTC](https://discuss.elastic.co/t/could-not-find-similarity-in-knnquery-in-java-client/343002/2 "2023-09-14T12:54:12Z")

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Just giving detail

> **[KnnQuery (java-client 8.10.0 API)](https://artifacts.elastic.co/javadoc/co/elastic/clients/elasticsearch-java/8.10.0/co/elastic/clients/elasticsearch/_types/KnnQuery.html)**
>
> declaration: package: co.elastic.clients.elasticsearch.\_types, class: KnnQuery

Does not has similarity attribute as below link has in their sample query

> **[k-nearest neighbor (kNN) search | Elasticsearch Guide \[8.9\] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/8.9/knn-search.html)**

```auto
POST image-index/_search
{
  "knn": {
    "field": "image-vector",
    "query_vector": [1, 5, -20],
    "k": 5,
    "num_candidates": 50,
    "similarity": 36,
    "filter": {
      "term": {
        "file-type": "png"
      }
    }
  },
  "fields": ["title"],
  "_source": false
}

```

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<div class="post-metadata">

**Author:** ![Sriram8894](https://avatars.discourse-cdn.com/v4/letter/s/bbe5ce/32.png) [@Sriram8894](https://discuss.elastic.co/u/Sriram8894)\
**Post date:** [October 11, 2023, 1:21pm UTC](https://discuss.elastic.co/t/could-not-find-similarity-in-knnquery-in-java-client/343002/3 "2023-10-11T13:21:52Z")

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Any update on this ?? We are planning to upgrade our elasticsearch version from 8.7v to above to get benefit from "similarity" score functionality.

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<div class="post-metadata">

**Author:** ![codehustler](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/codehustler/32/126606_2.png) [@codehustler](https://discuss.elastic.co/u/codehustler)\
**Post date:** [October 17, 2023, 4:59pm UTC](https://discuss.elastic.co/t/could-not-find-similarity-in-knnquery-in-java-client/343002/4 "2023-10-17T16:59:35Z")

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still not available in 8.10.3

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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:** [November 14, 2023, 5:00pm UTC](https://discuss.elastic.co/t/could-not-find-similarity-in-knnquery-in-java-client/343002/5 "2023-11-14T17:00:31Z")

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