# Non-constant scoring **URL:** \ **Category:** Elasticsearch\ **Created:** [November 3, 2014, 2:49pm UTC](https://discuss.elastic.co/t/non-constant-scoring/20543 "2014-11-03T14:49:21Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Sofiane\_Cherchalli](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sofiane_cherchalli/32/1129_2.png) [@Sofiane\_Cherchalli](https://discuss.elastic.co/u/Sofiane_Cherchalli)\ **Post date:** [November 3, 2014, 2:49pm UTC](https://discuss.elastic.co/t/non-constant-scoring/20543/1 "2014-11-03T14:49:21Z")
I'm doing a multi\_match query on multi\_fields and I'm expecting a constant scoring because the search string is in all the documents. I'm running ES 1.3.4 with ICU plugin. Here are the steps to reproduce it: # index settings & mappings PUT /blogs { "settings": { "analysis": { "filter": { "length\_filter": { "type": "length", "min": 2 } }, "tokenizer": { "nGram\_tokenizer": { "type": "nGram", "min\_gram": 2, "max\_gram": 30, "token\_chars": ["letter", "digit", "symbol"] } }, "analyzer": { "nGram\_analyzer": { "type": "custom", "filter": ["icu\_normalizer", "icu\_folding", "length\_filter"], "tokenizer": "nGram\_tokenizer" }, "search\_analyzer": { "type": "custom", "filter": ["icu\_normalizer", "icu\_folding", "length\_filter"], "tokenizer": "icu\_tokenizer" }, "def\_analyzer": { "alias": ["icu\_analyzer"], "type": "custom", "filter": ["icu\_normalizer", "icu\_folding"], "tokenizer": "icu\_tokenizer" } } } }, "mappings": { "_default_": { "\_source": { "enabled": true, "compress": true, "compress\_threshold": "200b" }, "\_all": { "enabled": true }, "dynamic\_date\_formats": ["yyyy-MM-dd", "date\_optional\_time"] }, "post": { "dynamic": "strict", "properties": { "title": { "type": "string", "analyzer": "def\_analyzer", "fields": { "ngram": { "type": "string", "analyzer": "nGram\_analyzer", "term\_vector": "with\_positions\_offsets" } } }, "content": { "type": "string", "analyzer": "def\_analyzer", "fields": { "ngram": { "type": "string", "analyzer": "nGram\_analyzer", "term\_vector": "with\_positions\_offsets" } } }, "visible": { "type": "boolean", "index": "not\_analyzed" }, "post\_date": { "type": "date", "index": "not\_analyzed" } } } } } # index some documents PUT blogs/post/1 { "title": "title 1", "content": "", "visible": true, "post\_date": "2014-11-03T12:50:00" } PUT blogs/post/2 { "title": "title 2", "content": "", "visible": true, "post\_date": "2014-11-03T12:51:00" } PUT blogs/post/3 { "title": "title 3", "content": "", "visible": true, "post\_date": "2014-11-03T12:52:00" } PUT blogs/post/4 { "title": "title 4", "content": "", "visible": true, "post\_date": "2014-11-03T12:53:00" } PUT blogs/post/5 { "title": "title 5", "content": "", "visible": true, "post\_date": "2014-11-03T12:54:00" } # run the multi\_match query and sort the results by score (desc) and post\_date (asc) GET /blogs/post/\_search { "query": { "filtered": { "query": { "multi\_match": { "query": "tit", "fields": ["title.ngram^2", "content.ngram"], "type": "most\_fields", "operator": "and", "analyzer": "search\_analyzer", "minimum\_should\_match" : 1 } }, "filter": { "term": { "visible": "true" } } } }, "sort" : [ { "\_score": { "order": "desc" }}, { "post\_date": { "order": "asc" }} ] } { "took": 4, "timed\_out": false, "\_shards": { "total": 5, "successful": 5, "failed": 0 }, "hits": { "total": 5, "max\_score": null, "hits": [ { "\_index": "blogs", "\_type": "post", "\_id": "1", "\_score": 0.025078464, "\_source": { "title": "title 1", "content": "", "visible": true, "post\_date": "2014-11-03T12:50:00" }, "sort": [ 0.025078464, 1415019000000 ] }, { "\_index": "blogs", "\_type": "post", "\_id": "2", "\_score": 0.025078464, "\_source": { "title": "title 2", "content": "", "visible": true, "post\_date": "2014-11-03T12:51:00" }, "sort": [ 0.025078464, 1415019060000 ] }, { "\_index": "blogs", "\_type": "post", "\_id": "3", "\_score": 0.025078464, "\_source": { "title": "title 3", "content": "", "visible": true, "post\_date": "2014-11-03T12:52:00" }, "sort": [ 0.025078464, 1415019120000 ] }, { "\_index": "blogs", "\_type": "post", "\_id": "4", "\_score": 0.025078464, "\_source": { "title": "title 4", "content": "", "visible": true, "post\_date": "2014-11-03T12:53:00" }, "sort": [ 0.025078464, 1415019180000 ] }, { "\_index": "blogs", "\_type": "post", "\_id": "5", "\_score": 0.025078464, "\_source": { "title": "title 5", "content": "", "visible": true, "post\_date": "2014-11-03T12:54:00" }, "sort": [ 0.025078464, 1415019240000 ] } ] } } As you see, the score is uniform (equal) as expected. Now if I add one more document, the score changes: # index one more document PUT blogs/post/6 { "title": "title 6", "content": "", "visible": true, "post\_date": "2014-11-03T12:55:00" } { "took": 4, "timed\_out": false, "\_shards": { "total": 5, "successful": 5, "failed": 0 }, "hits": { "total": 6, "max\_score": null, "hits": [ { "\_index": "blogs", "\_type": "post", "\_id": "1", "\_score": _0.053388856_, "\_source": { "title": "title 1", "content": "", "visible": true, "post\_date": "2014-11-03T12:50:00" }, "sort": [ 0.053388856, 1415019000000 ] }, { "\_index": "blogs", "\_type": "post", "\_id": "6", "\_score": _0.053388856_, "\_source": { "title": "title 6", "content": "", "visible": true, "post\_date": "2014-11-03T12:55:00" }, "sort": [ 0.053388856, 1415019300000 ] }, { "\_index": "blogs", "\_type": "post", "\_id": "2", "\_score": _0.025078464_, "\_source": { "title": "title 2", "content": "", "visible": true, "post\_date": "2014-11-03T12:51:00" }, "sort": [ 0.025078464, 1415019060000 ] }, { "\_index": "blogs", "\_type": "post", "\_id": "3", "\_score": _0.025078464_, "\_source": { "title": "title 3", "content": "", "visible": true, "post\_date": "2014-11-03T12:52:00" }, "sort": [ 0.025078464, 1415019120000 ] }, { "\_index": "blogs", "\_type": "post", "\_id": "4", "\_score": _0.025078464_, "\_source": { "title": "title 4", "content": "", "visible": true, "post\_date": "2014-11-03T12:53:00" }, "sort": [ 0.025078464, 1415019180000 ] }, { "\_index": "blogs", "\_type": "post", "\_id": "5", "\_score": _0.025078464_, "\_source": { "title": "title 5", "content": "", "visible": true, "post\_date": "2014-11-03T12:54:00" }, "sort": [ 0.025078464, 1415019240000 ] } ] } } As you could see the score is not anymore constant. 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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:** [July 6, 2017, 12:52am UTC](https://discuss.elastic.co/t/non-constant-scoring/20543/2 "2017-07-06T00:52:28Z")
Closed on July 6, 2017, 12:52am UTC