# Does elasticsearch8.5.1 support vector dimensionality reduction when using vector retrieval?

**URL:** <https://discuss.elastic.co/t/does-elasticsearch8-5-1-support-vector-dimensionality-reduction-when-using-vector-retrieval/319600>\
**Category:** Elasticsearch\
**Tags:** vector-search\
**Created:** [November 23, 2022, 1:46am UTC](https://discuss.elastic.co/t/does-elasticsearch8-5-1-support-vector-dimensionality-reduction-when-using-vector-retrieval/319600 "2022-11-23T01:46:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![xy\_xia](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/xy_xia/32/113666_2.png) [@xy\_xia](https://discuss.elastic.co/u/xy_xia)\
**Post date:** [November 23, 2022, 1:46am UTC](https://discuss.elastic.co/t/does-elasticsearch8-5-1-support-vector-dimensionality-reduction-when-using-vector-retrieval/319600/1 "2022-11-23T01:46:30Z")

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Hello，  
As far as I know, the number of vector dimensions. Can’t exceed `1024` for indexed vectors (`"index": true` ), or `2048` for non-indexed vectors.  
But, my model outputs a vector with dimensions greater than 1024, any suggestions if I want to use vector retrieval，Is there an operation for vector dimensionality reduction in elasticsearch8.5.1?

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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:** [December 21, 2022, 1:47am UTC](https://discuss.elastic.co/t/does-elasticsearch8-5-1-support-vector-dimensionality-reduction-when-using-vector-retrieval/319600/2 "2022-12-21T01:47:05Z")

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