elasticsearch中的相同类型的相关性 [英] Relevance by type on same field in elasticsearch

问题描述

是否有任何方法可以根据类型在同一个字段上添加 boost 搜索结果？

我的基本提示是例如：

  GET _search 
 {
query：{
simple_query_string ：{
query：mangan，
fields：[_ all，title ^ 6] 
} 
} 
} 
  

但是对于其他一些文档，我希望title不那么重要，所以我试着用类型前缀：

  GET _search 
 {
query：{
simple_query_string：{
query：mangan，
fields：[
_all，
DocumentationPage.title ^ 6，
DocumentationPage.title ^ 6 ] 
} 
} 
} 
  

但它不会提升。作为最后的手段，我可​​以使用

为了举例，假设文档只包含 title 字段。

解决方案

实现这一点的一种简单方法是重写查询在OP中作为 dis -max查询。

elasticsearch 5.x示例：

 query：{
dis_max：{
queries：[
 {
simple_query_string：{
 fields：[
_all
]，
query：mangan
} 
}，
 {
bool：{
filter：{
type：{
value：DocumentationPage
} 
}， 
必须：[
 {
simple_query_string：{
fields：[
title ^ 6
，
query：mangan
} 
} 
] 
} 
} 
] 
} 
} 
} 
  

Is there any way to boost search results on same field depending on type?

My basic boosting is something like:

GET _search
{
   "query": {
      "simple_query_string": {
         "query": "mangan",
         "fields":["_all", "title^6"]
      }
   }
}

But for some other documents I want title to be less important, so I tried to prefix it with type:

GET _search
{
   "query": {
      "simple_query_string": {
         "query": "mangan",
         "fields":[
            "_all",
            "DocumentationPage.title^6",
            "DocumentationPage.title^6"]
      }
   }
}

But then it does not boost at all. As a last resort I could use Funcsion/Script Score bu would like to avoid it.

For sake of example, assume that document contains just title field.

解决方案

A simple way to achieve this is re-writing the query in the OP as a dis-max query.

Example for elasticsearch 5.x:

 {
   "query": {
      "dis_max": {
         "queries": [
            {
               "simple_query_string": {
                  "fields": [
                     "_all"
                  ],
                  "query": "mangan"
               }
            },
            {
               "bool": {
                  "filter": {
                     "type": {
                        "value": "DocumentationPage"
                     }
                  },
                  "must": [
                     {
                        "simple_query_string": {
                           "fields": [
                              "title^6"
                           ],
                           "query": "mangan"
                        }
                     }
                  ]
               }
            }
         ]
      }
   }
}

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