ElasticSearch - 由空格分割的术语聚合(ElasticSearch - terms aggregation split by whitespace)

 我有一堆弹性搜索文档，其中包含有关招聘广告的信息。 我正在尝试聚合attributes.Title字段以从作业发布中提取“体验”实例的数量。 例如Junior，Senior，Lead等。相反，我得到的是与标题整体匹配的桶而不是标题字段的每个单词。 例如“初级Java开发人员”，“高级.NET分析师”等。 
 
 我如何告诉弹性搜索根据标题中的每个单词拆分聚合，而不是匹配整个字段的值。 
 
 我后来想要扩展查询以提取“技能级别”和“角色”，但是如果存储桶包含字段中的所有单词，只要它们被拆分为单独的存储桶，它也应该没问题。 
 
 当前查询： 
 
GET /jobs/_search
{
  "query": {
    "simple_query_string" : {
        "query": "Java",
        "fields": ["attributes.Title"]
    }
  },
  "size": 0,
  "aggs": {
    "group_by_state": {
      "terms": {
        "field": "attributes.Title.keyword"
      }
    }
  }
}
 
 不需要的输出： 
 
{
  ...
  "hits": {
    "total": 63,
    "max_score": 0,
    "hits": []
  },
  "aggregations": {
    "group_by_state": {
      "doc_count_error_upper_bound": 0,
      "sum_other_doc_count": 14,
      "buckets": [{
          "key": "Junior Java Tester",
          "doc_count": 6
        },{
          "key": "Senior Java Lead",
          "doc_count": 6
        },{
          "key": "Intern Java Tester",
          "doc_count": 5
        },
        ...
      ]
    }
  }
}
 
 期望的输出： 
 
{
  ...
  "hits": {
    "total": 63,
    "max_score": 0,
    "hits": []
  },
  "aggregations": {
    "group_by_state": {
      "doc_count_error_upper_bound": 0,
      "sum_other_doc_count": 14,
      "buckets": [{
          "key": "Junior",
          "doc_count": 12
        },{
          "key": "Senior",
          "doc_count": 8
        },{
          "key": "Tester",
          "doc_count": 5
        },{
          "key": "Intern",
          "doc_count": 5
        },{
          "key": "Analyst",
          "doc_count": 5
        },
        ...
      ]
    }
  }
}

I have a bunch of elastic search documents that contain information about jobs ads. I'm trying to aggregate the attributes.Title field to extract the number of "experience" instances from the job posting. e.g. Junior, Senior, Lead, etc. Instead what I'm getting are buckets that match the title as a whole instead of the each word it the title field. e.g. "Junior Java Developer", "Senior .NET Analyst", etc.
 
How can I tell elastic search to split the aggregation based on each word in the title as opposed the matching the value of the whole field.
 
I would later like to expand the query to also extract the "skill level" and "role", but it should also be fine if the buckets contain all the words in the field as long as they are split into separate buckets.
 
Current query:
 
GET /jobs/_search
{
  "query": {
    "simple_query_string" : {
        "query": "Java",
        "fields": ["attributes.Title"]
    }
  },
  "size": 0,
  "aggs": {
    "group_by_state": {
      "terms": {
        "field": "attributes.Title.keyword"
      }
    }
  }
}
 
Unwanted Output:
 
{
  ...
  "hits": {
    "total": 63,
    "max_score": 0,
    "hits": []
  },
  "aggregations": {
    "group_by_state": {
      "doc_count_error_upper_bound": 0,
      "sum_other_doc_count": 14,
      "buckets": [{
          "key": "Junior Java Tester",
          "doc_count": 6
        },{
          "key": "Senior Java Lead",
          "doc_count": 6
        },{
          "key": "Intern Java Tester",
          "doc_count": 5
        },
        ...
      ]
    }
  }
}
 
Desired Output:
 
{
  ...
  "hits": {
    "total": 63,
    "max_score": 0,
    "hits": []
  },
  "aggregations": {
    "group_by_state": {
      "doc_count_error_upper_bound": 0,
      "sum_other_doc_count": 14,
      "buckets": [{
          "key": "Junior",
          "doc_count": 12
        },{
          "key": "Senior",
          "doc_count": 8
        },{
          "key": "Tester",
          "doc_count": 5
        },{
          "key": "Intern",
          "doc_count": 5
        },{
          "key": "Analyst",
          "doc_count": 5
        },
        ...
      ]
    }
  }
}

原文：https://stackoverflow.com/questions/46669017