# Query related to explain api
**URL:** https://discuss.elastic.co/t/query-related-to-explain-api/15746
**Category:** Elasticsearch
**Created:** [February 12, 2014, 5:16am UTC](https://discuss.elastic.co/t/query-related-to-explain-api/15746 "2014-02-12T05:16:17Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Navneet\_Mathpal](https://discuss.elastic.co/u/Navneet_Mathpal)
#### Post date: [February 12, 2014, 5:16am UTC](https://discuss.elastic.co/t/query-related-to-explain-api/15746/1 "2014-02-12T05:16:17Z")
hi,
what is queryWeight and fieldWeight value which we get as an output of
explain api, and how is it calculated?
Thanks
Navneet Mathpal
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### Author:  [@spinscale](https://discuss.elastic.co/u/spinscale)
#### Post date: [February 13, 2014, 8:32am UTC](https://discuss.elastic.co/t/query-related-to-explain-api/15746/2 "2014-02-13T08:32:58Z")
Hey,
please see the explanation at the lucene documentation, how tf-idf formula
is used to calculate the different score values:
[https://lucene.apache.org/core/4\_0\_0/core/org/apache/lucene/search/similarities/TFIDFSimilarity.html](https://lucene.apache.org/core/4_0_0/core/org/apache/lucene/search/similarities/TFIDFSimilarity.html)
--Alex
On Wed, Feb 12, 2014 at 6:16 AM, Navneet Mathpal \<[navneetmathpal93@gmail.com](mailto:navneetmathpal93@gmail.com)
> wrote:
> hi,
>
> what is queryWeight and fieldWeight value which we get as an output of
> explain api, and how is it calculated?
>
> Thanks
> Navneet Mathpal
>
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:50am UTC](https://discuss.elastic.co/t/query-related-to-explain-api/15746/3 "2017-07-06T01:50:37Z")