# Score index

**URL:** <https://discuss.elastic.co/t/score-index/37944>\
**Category:** Elasticsearch\
**Created:** [December 24, 2015, 2:28pm UTC](https://discuss.elastic.co/t/score-index/37944 "2015-12-24T14:28:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![soufiane](https://avatars.discourse-cdn.com/v4/letter/s/8edcca/32.png) [@soufiane](https://discuss.elastic.co/u/soufiane)\
**Post date:** [December 24, 2015, 2:28pm UTC](https://discuss.elastic.co/t/score-index/37944/1 "2015-12-24T14:28:04Z")

</div>

Hi all ,

I have a question related to a specefic index that contains documents like the following :

```
{
  "_shard": 0,
  "_node": "Ck_a7Bg2Q4uHjQU82Sfpqg",
  "_index": "indexname",
  "_type": "message",
  "_id": "AVHTfTrYxuJAhPSBWMaa",
  "_score": 1,
  "sort": [
    1
  ],
  "_explanation": {
    "value": 1,
    "description": "ConstantScore(*:*), product of:",
    "details": [
      {
        "value": 1,
        "description": "boost"
      },
      {
        "value": 1,
        "description": "queryNorm"
      }
    ]
  }
}

```

I vaguely understood that is the for optimize the serch operations  
I can not see how this index is created and what is exactly the purpose of it .

Any help will be apreciate it .

Thanks .

---

<div class="post-metadata">

**Author:** ![softwaredoug](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/softwaredoug/32/22681_2.png) [@softwaredoug](https://discuss.elastic.co/u/softwaredoug)\
**Post date:** [December 24, 2015, 5:05pm UTC](https://discuss.elastic.co/t/score-index/37944/2 "2015-12-24T17:05:14Z")

</div>

Can you share the query you sent to produce this? The explanation structure may depend on the query itself.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 11:28pm UTC](https://discuss.elastic.co/t/score-index/37944/3 "2017-07-05T23:28:45Z")

</div>

Closed on July 5, 2017, 11:28pm UTC