Elasticsearch:结合功能分数 [英] Elasticsearch: combine function scores

问题描述

我用三个函数为es查询评分:

I'm scoring es query with three functions:

{
  "query": {
    "function_score": {
      "query": {
        "bool": {
          ...
        }
      }
    }
  },
  "score_mode": "multiply",
  "boost_mode": "replace",
  "functions": [
    { f1 },
    { f2 },
    { f3 }
  ]
}

所以分数将是: f1(doc)* f2(doc)* f3(doc).

但是我想要的是 f1(doc)* f2(doc)+ f3(doc)，有解决方案吗?

But what I want is f1(doc) * f2(doc) + f3(doc), any solutions?

推荐答案

这可能有用，即我们将函数f1和f2的分数相乘，然后将该分数添加到查询分数中，这是另一个 function_score 仅查询f3.

This might work, i.e. we multiply the scores of functions f1 and f2 together and then we add that score to the query score which is another function_score query just for f3.

{
  "query": {
    "function_score": {
      "query": {
        "function_score": {
          "query": { "match_all": {}},
          "functions": [
            {
              "f3": {...}
            }
          ]
        }
      },
      "functions": [
        {
          "f1": {...}
        },
        {
          "f2": {...}
        }
      ],
      "score_mode": "multiply",
      "boost_mode": "sum"
    }
  }
}

这篇关于Elasticsearch:结合功能分数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！