Boosting Query

Returns documents matching a positive query while reducing the relevance score of documents that also match a negativ query.

Sample Request

GET /_search
{
  "query": {
    "boosting": {
      "positive": {
        "term": {
          "text": "apple"
        }
      },
      "negative": {
        "term": {
          "text": "pie tart fruit crumble tree"
        }
      },
      "negative_boost": 0.5
    }
  }
}

positive - (Required, query object) Query you wish to run. Any returned documents must match this query.

negative - (Required, query object) Query used to decrease the relevance score of matching documents.

How Relevance Score is calculated

If a returned document matches the positive query and this query, the boosting query calculates the final relevance score for the document as follows:

1. Take the original relevance score from the positive query.
2. Multiply the score by the negative_boost value.

negative_boost - (Required, float) Floating point number between 0 and 1.0 used to decrease the relevance scores of documents matching the negativequery.

Constant Query

Returns every matching document with a relevance score equal to the boost parameter value.

GET /_search
{
  "query": {
    "constant_score": {
      "filter": {
        "term": { "user.id": "kimchy" }
      },
      "boost": 1.2
    }
  }
}