elasticsearch - Elasticsearch MultiMatch查询仅匹配最后一项

Question

我对具有几个术语的多个字段进行了multymatch查询:

{
    "multi_match": {
        "query": ["екатеринбург", "тимирязева"],
        "fields": [
            "admin0_name^1.0", 
            "admin0_alternate_names^0.95", 
            "local_admin_name^0.6", 
            "locality_name^1.2", 
            "locality_alternate_names^1.15", 
            "neighborhood_name^0.3", 
            "street_name^1.4", 
            "housenumber^1.4", 
            "housenumber_exact^1.5", 
            "name.text^2.0"],
        "type": "most_fields",
        "_name": "main_search_query"
    }
}

术语 екатеринбург应该匹配 locality_name，并且 тимирязева应该匹配 street_name和 name.text。

但是查询说明告诉我，只有 тимирязева被匹配:

    1.0168997 = (MATCH) product of:
      5.0844984 = (MATCH) sum of:
        3.4778461 = (MATCH) weight(name.text:тимирязева^2.0 in 233899) [PerFieldSimilarity], result of:
          3.4778461 = score(doc=233899,freq=2.0), product of:
            0.39484683 = queryWeight, product of:
              2.0 = boost
              9.965216 = idf(docFreq=184, maxDocs=1447823)
              0.019811254 = queryNorm
            8.808089 = fieldWeight in 233899, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              9.965216 = idf(docFreq=184, maxDocs=1447823)
              0.625 = fieldNorm(doc=233899)
        1.6066521 = (MATCH) weight(street_name:тимирязева^1.4 in 233899) [PerFieldSimilarity], result of:
          1.6066521 = score(doc=233899,freq=2.0), product of:
            0.22453468 = queryWeight, product of:
              1.4 = boost
              8.095495 = idf(docFreq=1199, maxDocs=1447823)
              0.019811254 = queryNorm
            7.1554747 = fieldWeight in 233899, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.095495 = idf(docFreq=1199, maxDocs=1447823)
              0.625 = fieldNorm(doc=233899)
      0.2 = coord(2/10)

为确保 екатеринбург本身与 locality_name匹配，我已将该查询与术语查询结合​​在一起， bool(boolean) 查询的必填部分也是如此。它匹配。

如果我将查询数组中的术语顺序更改为 ["тимирязева", "екатеринбург"]，情况将变为完全相反，则 екатеринбург匹配 locality_name，但 тимирязева不匹配 street_name。

看起来 multi_match仅考虑了最后一项。

N.b.我使用的是ES的较旧版本:1.4是一个错误，还是 multi_match的工作方式错误？

我可以采用一种解决方法:将查询用作字符串而不是查询，但是我很想知道为什么预 token 化方法会失败。

Answer 1

尝试一下，可能会帮助您:-

Query_string比multi_match更强大。 link

{
  "query": {
    "query_string": {
       "fields" : ["admin0_name*", 
            "admin0_alternate_names*", 
            "local_admin_name*", 
            "locality_name*", 
            "locality_alternate_names*", 
            "neighborhood_name*", 
            "street_name*", 
            "housenumber*", 
            "housenumber_exact*", 
            "name.text*"] ,
      "query": "*екатеринбург*" OR "*тимирязева*"
    }
  }
}

这是我的分析，query_string在部分搜索 link 中如何更强大