是否可以在 ElasticSearch 中丢弃得分高于给定阈值的结果？

Question

In the same way that there is a min_score parameter to discard results with small scores, is there a way to discard results with higher score than a given value?

I use item price to calculate the score, but I need to do a query that ensures the price is between some limits (max and min). The price is calculated using function_score field function summing several fields.

Cheers.

Answer 1

My first idea was to use the post_filter with a range query, but the _score is not available in the post_filter

But in the meanwhile, as a workaround, just define a script_score in order to exclude higher scores:

GET _search
{
  "query": {
    "function_score": {
      "query": {
        ...
      },
      "script_score" : {
        "script" : {
          "params": {
            "max_score": 10
           },
           "source": "_score > params.max_score ? 0 : _score"
         }
      },
      "boost_mode": "replace"
    }
  }
}