高峰只对攀登它而不是仰望它的人来说才有真正意义。

求助,搜索时由于逆文档频率,匹配到更多分词的文档没有被放在最前面

匿名 | 发布于2021年08月06日 | 阅读数:579

这是我的查询语句,有用到nested,cross_fields
GET archive/_explain/1
{
  "query": {
    "bool": {
      "must": [
        {
          "bool": {
            "should": [
              {
                "nested": {
                  "query": {
                    "multi_match": {
                      "query": "集体土地使用权登记审批表",
                      "fields": [
                        "documents.remark^1.0",
                        "documents.title^1.0"
                      ],
                      "type": "cross_fields"
                    }
                  },
                  "path": "documents",
                  "score_mode": "max"
                }
              },
              {
                "multi_match": {
                  "query": "集体土地使用权登记审批表",
                  "fields": [
                    "column1^1.0",
                    "column3^1.0",
                    "column4^1.0",
                    "column5^1.0",
                    "column6^1.0",
                    "column7^1.0",
                    "column8^1.0",
                    "column9^1.0",
                    "remark^1.0",
                    "title^1.0"
                  ],
                  "type": "cross_fields"
                }
              }
            ]
          }
        }
      ]
    }
  }
}
这是我希望得到的文档的explain
{
  "_index" : "archive_20210805_ansj",
  "_type" : "_doc",
  "_id" : "1",
  "matched" : true,
  "explanation" : {
    "value" : 6.763243,
    "description" : "sum of:",
    "details" : [
      {
        "value" : 6.763243,
        "description" : "sum of:",
        "details" : [
          {
            "value" : 6.763243,
            "description" : "Score based on 4 child docs in range from 97628 to 97638, best match:",
            "details" : [
              {
                "value" : 6.763243,
                "description" : "sum of:",
                "details" : [
                  {
                    "value" : 6.763243,
                    "description" : "sum of:",
                    "details" : [
                      {
                        "value" : 2.568368,
                        "description" : "max of:",
                        "details" : [
                          {
                            "value" : 2.568368,
                            "description" : "weight(documents.title:集体土地 in 97628) [PerFieldSimilarity], result of:",
                            "details" : [
                              {
                                "value" : 2.568368,
                                "description" : "score(freq=1.0), computed as boost * idf * tf from:",
                                "details" : [
                                  {
                                    "value" : 2.2,
                                    "description" : "boost",
                                    "details" : [ ]
                                  },
                                  {
                                    "value" : 2.684873,
                                    "description" : "idf, computed as log(1 + (N - n + 0.5) / (n + 0.5)) from:",
                                    "details" : [
                                      {
                                        "value" : 89785,
                                        "description" : "n, number of documents containing term",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 1315926,
                                        "description" : "N, total number of documents with field",
                                        "details" : [ ]
                                      }
                                    ]
                                  },
                                  {
                                    "value" : 0.4348213,
                                    "description" : "tf, computed as freq / (freq + k1 * (1 - b + b * dl / avgdl)) from:",
                                    "details" : [
                                      {
                                        "value" : 1.0,
                                        "description" : "freq, occurrences of term within document",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 1.2,
                                        "description" : "k1, term saturation parameter",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 0.75,
                                        "description" : "b, length normalization parameter",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 21.0,
                                        "description" : "dl, length of field",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 18.903868,
                                        "description" : "avgdl, average length of field",
                                        "details" : [ ]
                                      }
                                    ]
                                  }
                                ]
                              }
                            ]
                          }
                        ]
                      },
                      {
                        "value" : 1.6056693,
                        "description" : "max of:",
                        "details" : [
                          {
                            "value" : 1.6056693,
                            "description" : "weight(documents.title:使用权 in 97628) [PerFieldSimilarity], result of:",
                            "details" : [
                              {
                                "value" : 1.6056693,
                                "description" : "score(freq=1.0), computed as boost * idf * tf from:",
                                "details" : [
                                  {
                                    "value" : 2.2,
                                    "description" : "boost",
                                    "details" : [ ]
                                  },
                                  {
                                    "value" : 1.678505,
                                    "description" : "idf, computed as log(1 + (N - n + 0.5) / (n + 0.5)) from:",
                                    "details" : [
                                      {
                                        "value" : 245621,
                                        "description" : "n, number of documents containing term",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 1315926,
                                        "description" : "N, total number of documents with field",
                                        "details" : [ ]
                                      }
                                    ]
                                  },
                                  {
                                    "value" : 0.4348213,
                                    "description" : "tf, computed as freq / (freq + k1 * (1 - b + b * dl / avgdl)) from:",
                                    "details" : [
                                      {
                                        "value" : 1.0,
                                        "description" : "freq, occurrences of term within document",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 1.2,
                                        "description" : "k1, term saturation parameter",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 0.75,
                                        "description" : "b, length normalization parameter",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 21.0,
                                        "description" : "dl, length of field",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 18.903868,
                                        "description" : "avgdl, average length of field",
                                        "details" : [ ]
                                      }
                                    ]
                                  }
                                ]
                              }
                            ]
                          }
                        ]
                      },
                      {
                        "value" : 0.6689305,
                        "description" : "max of:",
                        "details" : [
                          {
                            "value" : 0.6689305,
                            "description" : "weight(documents.title:登记 in 97628) [PerFieldSimilarity], result of:",
                            "details" : [
                              {
                                "value" : 0.6689305,
                                "description" : "score(freq=1.0), computed as boost * idf * tf from:",
                                "details" : [
                                  {
                                    "value" : 2.2,
                                    "description" : "boost",
                                    "details" : [ ]
                                  },
                                  {
                                    "value" : 0.6992742,
                                    "description" : "idf, computed as log(1 + (N - n + 0.5) / (n + 0.5)) from:",
                                    "details" : [
                                      {
                                        "value" : 653944,
                                        "description" : "n, number of documents containing term",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 1315926,
                                        "description" : "N, total number of documents with field",
                                        "details" : [ ]
                                      }
                                    ]
                                  },
                                  {
                                    "value" : 0.4348213,
                                    "description" : "tf, computed as freq / (freq + k1 * (1 - b + b * dl / avgdl)) from:",
                                    "details" : [
                                      {
                                        "value" : 1.0,
                                        "description" : "freq, occurrences of term within document",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 1.2,
                                        "description" : "k1, term saturation parameter",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 0.75,
                                        "description" : "b, length normalization parameter",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 21.0,
                                        "description" : "dl, length of field",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 18.903868,
                                        "description" : "avgdl, average length of field",
                                        "details" : [ ]
                                      }
                                    ]
                                  }
                                ]
                              }
                            ]
                          }
                        ]
                      },
                      {
                        "value" : 1.9202754,
                        "description" : "max of:",
                        "details" : [
                          {
                            "value" : 1.9202754,
                            "description" : "weight(documents.title:审批表 in 97628) [PerFieldSimilarity], result of:",
                            "details" : [
                              {
                                "value" : 1.9202754,
                                "description" : "score(freq=1.0), computed as boost * idf * tf from:",
                                "details" : [
                                  {
                                    "value" : 2.2,
                                    "description" : "boost",
                                    "details" : [ ]
                                  },
                                  {
                                    "value" : 2.0073822,
                                    "description" : "idf, computed as log(1 + (N - n + 0.5) / (n + 0.5)) from:",
                                    "details" : [
                                      {
                                        "value" : 176781,
                                        "description" : "n, number of documents containing term",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 1315926,
                                        "description" : "N, total number of documents with field",
                                        "details" : [ ]
                                      }
                                    ]
                                  },
                                  {
                                    "value" : 0.4348213,
                                    "description" : "tf, computed as freq / (freq + k1 * (1 - b + b * dl / avgdl)) from:",
                                    "details" : [
                                      {
                                        "value" : 1.0,
                                        "description" : "freq, occurrences of term within document",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 1.2,
                                        "description" : "k1, term saturation parameter",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 0.75,
                                        "description" : "b, length normalization parameter",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 21.0,
                                        "description" : "dl, length of field",
                                        "details" : [ ]
                                      },
                                      {
                                        "value" : 18.903868,
                                        "description" : "avgdl, average length of field",
                                        "details" : [ ]
                                      }
                                    ]
                                  }
                                ]
                              }
                            ]
                          }
                        ]
                      }
                    ]
                  },
                  {
                    "value" : 0.0,
                    "description" : "match on required clause, product of:",
                    "details" : [
                      {
                        "value" : 0.0,
                        "description" : "# clause",
                        "details" : [ ]
                      },
                      {
                        "value" : 1.0,
                        "description" : "_type:__documents",
                        "details" : [ ]
                      }
                    ]
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "value" : 0.0,
        "description" : "match on required clause, product of:",
        "details" : [
          {
            "value" : 0.0,
            "description" : "# clause",
            "details" : [ ]
          },
          {
            "value" : 1.0,
            "description" : "DocValuesFieldExistsQuery [field=_primary_term]",
            "details" : [ ]
          }
        ]
      }
    ]
  }
}

这是我实际搜索后得分最高者的explain
{
"_index" : "archive_20210805_ansj",
"_type" : "_doc",
"_id" : "34589",
"matched" : true,
"explanation" : {
"value" : 10.107214,
"description" : "sum of:",
"details" : [
{
"value" : 10.107214,
"description" : "sum of:",
"details" : [
{
"value" : 1.8079908,
"description" : "Score based on 21 child docs in range from 871847 to 871867, best match:",
"details" : [
{
"value" : 1.8079908,
"description" : "sum of:",
"details" : [
{
"value" : 1.8079908,
"description" : "sum of:",
"details" : [
{
"value" : 1.8079908,
"description" : "max of:",
"details" : [
{
"value" : 1.8079908,
"description" : "weight(documents.title:审批表 in 131437) [PerFieldSimilarity], result of:",
"details" : [
{
"value" : 1.8079908,
"description" : "score(freq=1.0), computed as boost * idf * tf from:",
"details" : [
{
"value" : 2.2,
"description" : "boost",
"details" : [ ]
},
{
"value" : 2.0073822,
"description" : "idf, computed as log(1 + (N - n + 0.5) / (n + 0.5)) from:",
"details" : [
{
"value" : 176781,
"description" : "n, number of documents containing term",
"details" : [ ]
},
{
"value" : 1315926,
"description" : "N, total number of documents with field",
"details" : [ ]
}
]
},
{
"value" : 0.40939593,
"description" : "tf, computed as freq / (freq + k1 * (1 - b + b * dl / avgdl)) from:",
"details" : [
{
"value" : 1.0,
"description" : "freq, occurrences of term within document",
"details" : [ ]
},
{
"value" : 1.2,
"description" : "k1, term saturation parameter",
"details" : [ ]
},
{
"value" : 0.75,
"description" : "b, length normalization parameter",
"details" : [ ]
},
{
"value" : 24.0,
"description" : "dl, length of field",
"details" : [ ]
},
{
"value" : 18.903868,
"description" : "avgdl, average length of field",
"details" : [ ]
}
]
}
]
}
]
}
]
}
]
},
{
"value" : 0.0,
"description" : "match on required clause, product of:",
"details" : [
{
"value" : 0.0,
"description" : "# clause",
"details" : [ ]
},
{
"value" : 1.0,
"description" : "_type:__documents",
"details" : [ ]
}
]
}
]
}
]
},
{
"value" : 8.299223,
"description" : "max of:",
"details" : [
{
"value" : 8.299223,
"description" : "weight(title:审批表 in 131438) [PerFieldSimilarity], result of:",
"details" : [
{
"value" : 8.299223,
"description" : "score(freq=1.0), computed as boost * idf * tf from:",
"details" : [
{
"value" : 2.2,
"description" : "boost",
"details" : [ ]
},
{
"value" : 6.4560037,
"description" : "idf, computed as log(1 + (N - n + 0.5) / (n + 0.5)) from:",
"details" : [
{
"value" : 1003,
"description" : "n, number of documents containing term",
"details" : [ ]
},
{
"value" : 638739,
"description" : "N, total number of documents with field",
"details" : [ ]
}
]
},
{
"value" : 0.58432037,
"description" : "tf, computed as freq / (freq + k1 * (1 - b + b * dl / avgdl)) from:",
"details" : [
{
"value" : 1.0,
"description" : "freq, occurrences of term within document",
"details" : [ ]
},
{
"value" : 1.2,
"description" : "k1, term saturation parameter",
"details" : [ ]
},
{
"value" : 0.75,
"description" : "b, length normalization parameter",
"details" : [ ]
},
{
"value" : 26.0,
"description" : "dl, length of field",
"details" : [ ]
},
{
"value" : 56.880337,
"description" : "avgdl, average length of field",
"details" : [ ]
}
]
}
]
}
]
}
]
}
]
},
{
"value" : 0.0,
"description" : "match on required clause, product of:",
"details" : [
{
"value" : 0.0,
"description" : "# clause",
"details" : [ ]
},
{
"value" : 1.0,
"description" : "DocValuesFieldExistsQuery [field=_primary_term]",
"details" : [ ]
}
]
}
]
}
}

可以看到我的数据里,nested类型的document.title有很多是“集体土地使用权登记审批表”,但是由于数量太多,得分还没有一个title里包含“审批表”的高。
已邀请:

CurryQin

赞同来自:

你的score_mode改一下,看看那种情况适用你  first avg之类的?

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