# Performance of multi\_match **URL:** \ **Category:** Elasticsearch\ **Created:** [June 24, 2014, 3:09pm UTC](https://discuss.elastic.co/t/performance-of-multi-match/18296 "2014-06-24T15:09:21Z")\ **Posts on this page:** 2\ **Page:** 2
**Author:** ![Stephane\_Bastian](https://avatars.discourse-cdn.com/v4/letter/s/35a633/32.png) [@Stephane\_Bastian](https://discuss.elastic.co/u/Stephane_Bastian)\ **Post date:** [June 27, 2014, 6:01am UTC](https://discuss.elastic.co/t/performance-of-multi-match/18296/21 "2014-06-27T06:01:59Z")
Hello Christoph, Sorry but I won't be able to provide hints on this one. Hope you'll find a solution Stephane On 06/26/2014 05:43 PM, Christoph Lingg wrote: > other unexpected results arise due to different queryNorms: > > for the first result i get a query norm: > | > { > "value": 0.0059806756, > "description": "queryNorm" > } > | > > for some other documents it's: > | > { > "value": 0.0031318406, > "description": "queryNorm" > } > | > > the querynorm is multiplied to create the score, so it pushes some > documents by a factor of two leading to unexpected results i do not > understand. i digged into queryNorm and as far as i could understand > it should stay constant for all docs! the documentation > [http://lucene.apache.org/core/3\_0\_3/api/all/org/apache/lucene/search/Similarity.html](http://lucene.apache.org/core/3_0_3/api/all/org/apache/lucene/search/Similarity.html) > states: > | > queryNorm(q) is a normalizing factor used to make scores between > queries comparable. This factor does not affect document ranking > (since all ranked documents are multiplied by the same factor), but > rather just attempts to make scores from different queries (or even > different indexes) comparable. > | > > is it ok that queryNorm differs? > > -- > You received this message because you are subscribed to a topic in the > Google Groups "elasticsearch" group. > To unsubscribe from this topic, visit > [https://groups.google.com/d/topic/elasticsearch/bjl2PJEhYsg/unsubscribe](https://groups.google.com/d/topic/elasticsearch/bjl2PJEhYsg/unsubscribe). > To unsubscribe from this group and all its topics, send an email to > [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com) > [mailto:elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/88ac7b4a-ffc9-4fa3-88e1-0342424f1be5%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/88ac7b4a-ffc9-4fa3-88e1-0342424f1be5%40googlegroups.com) > [https://groups.google.com/d/msgid/elasticsearch/88ac7b4a-ffc9-4fa3-88e1-0342424f1be5%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/88ac7b4a-ffc9-4fa3-88e1-0342424f1be5%40googlegroups.com?utm_medium=email&utm_source=footer). > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/53AD08D7.1010606%40gmail.com](https://groups.google.com/d/msgid/elasticsearch/53AD08D7.1010606%40gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 1:19am UTC](https://discuss.elastic.co/t/performance-of-multi-match/18296/22 "2017-07-06T01:19:22Z")
Closed on July 6, 2017, 1:19am UTC [Previous page](https://discuss.elastic.co/t/performance-of-multi-match/18296.md?page=1)