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,您也可以对它们进行不同的提升.假设您对这两个字词都有常规的匹配查询,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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