elasticsearch提高精确短语匹配的重要性 [英] elasticsearch boost importance of exact phrase match

问题描述

elasticsearch 有没有办法提高出现在文档中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 developer"，并且如果web developer"这两个词一起出现，则与在整个文档中分别出现的web"和developer"相比，它们会增加 5.因此，任何包含web developer"的文档都会首先出现在结果中.

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 bool 查询，您也可以为它们分配不同的提升.假设您有一个常规的匹配查询词，无论它们的位置如何，然后是具有更高提升的短语查询.

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.

类似于以下内容:

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

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