elasticsearch提高了精确词组匹配的重要性 [英] elasticsearch boost importance of exact phrase match

问题描述

elasticsearch中是否有办法提高文档中出现的确切短语的重要性?

Is there a way in elasticsearch to boost the importance of the exact phrase appearing in the the document?

例如，如果我正在搜索短语"Web开发人员"，并且如果单词"Web开发人员"一起出现，则与在整个文档中分别出现的"Web"和开发人员"相比，它们将提高5倍.因此，任何包含"Web开发人员"的文档都将首先出现在结果中.

For example if I was searching for the phrase "web developer" and if the words "web developer" appeared together they would be boosted by 5 compared to "web" and "developer" appearing separately throughout the document. Thereby any document that contained "web developer" together would appear first in the results.

推荐答案

您可以使用匹配查询，无论其位置如何，然后使用提升查询量的词组查询.

You can combine different queries together using a bool query, and you can assing a different boost to them as well. Let's say you have a regular match query for both the terms, regardless of their positions, and then a phrase query with a higher boost.

类似以下内容:

{
  "query": {
    "bool": {
      "should": [
        {
          "match": {
            "field": "web developer"
          }
        },
        {
          "match_phrase": {
            "field": "web developer",
            "boost": 5
          }
        }
      ],
      "minimum_number_should_match": 1
    }
  }
}

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