Elasticsearch autocomplete- sorting words by their relevance to a keyword

Elastic Stack Elasticsearch
1

I'm currently working on a search using elasticsearch. We have a very large amount of users. Here is the elasticsearch mapping :

PUT /example_index/_mapping/users
{
  "properties": {
    "user_autocomplete": {
      "type": "text",
      "fields": {
        "raw": {
          "type": "keyword"
        },
        "completion": {
          "type": "text",
          "analyzer": "user_autocomplete_analyzer",
          "search_analyzer": "standard"
        }
      }
    },
    "firstName": {
      "type": "text"
    },
    "lastName": {
      "type": "text"
    }
  }
}

Here is the search query. for example, I get 3 records

GET example_index/users/_search
{
  "from": 0,
  "size": 3,
  "query": {
    "query_string": {
      "query": "*ro*",
      "fields": [
        "firstName",
        "lastName"
      ]
    }
  },
  "aggs": {
    "user_suggestions": {
      "terms": {
        "size": 3,
        "field": "user_autocomplete.raw"
      }
    }
  }
}

Here is the output of elasticsearch

{
  "took": 53,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": 13,
    "max_score": 1,
    "hits": [
      {
        "_index": "example_index",
        "_type": "users",
        "_id": "08",
        "_score": 1,
        "_source": {
          "firstName": "Eero",
          "lastName": "Saarinen",
          "user_autocomplete": "Eero Saarinen"
        }
      },
      {
        "_index": "example_index",
        "_type": "users",
        "_id": "16",
        "_score": 1,
        "_source": {
          "firstName": "Aaron",
          "lastName": "Judge",
          "user_autocomplete": "Aaron Judge"
        }
      },
      {
        "_index": "example_index",
        "_type": "users",
        "_id": "20",
        "_score": 1,
        "_source": {
          "firstName": "Robert",
          "lastName": "Langdon",
          "user_autocomplete": "Robert Langdon"
        }
      }
    ]
  },
  "aggregations": {
    "user_suggestions": {
      "doc_count_error_upper_bound": 0,
      "sum_other_doc_count": 10,
      "buckets": [
        {
          "key": "Eero Saarinen",
          "doc_count": 1
        },
        {
          "key": "Aaron Judge",
          "doc_count": 1
        },
        {
          "key": "Robert Langdon",
          "doc_count": 1
        }
      ]
    }
  }
}

I need result like in the following order

  1. Robert Langdon
  2. Aaron Judge
  3. Eero Saarinen

I have tried order method. It won't work. So is there a way?

2

Is that descending sort on key that you want to do?

If so there is an example here: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-terms-aggregation.html#search-aggregations-bucket-terms-aggregation-order

3

No. I want to order based on the score. But the score is always 1.
If i change query from this "query": "ro", to "query": "ro", it is working fine. But Autoomcpltetion not working. It s

4

If i change query from this "query": "ro", to "query": "ro",

I don't see the difference between your both examples TBH.

Could you provide a full recreation script as described in

It will help to better understand what you are doing.
Please, try to keep the example as simple as possible.

5

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