結果のドキュメントのスコアをカスタマイズします

1
db.movies.aggregate([{
2
    "$search": {
3
      "text": {
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        "query": "Helsinki",
5
        "path": "plot"
6
      }
7
    }
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  },
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  {
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    "$limit": 5
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  },
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  {
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    "$project": {
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      "_id": 0,
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      "title": 1,
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      "score": 1,
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      "maxScore": 1,
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      "normalizedScore": 1
19
    }
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  },
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  {
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    "$addFields": {
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      "score": {
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        "$meta": "searchScore"
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      }
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    }
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  },
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  {
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    "$setWindowFields": {
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      "output": {
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        "maxScore": {
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          "$max": "$score"
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        }
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      }
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    }
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  },
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  {
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    "$addFields": {
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      "normalizedScore": {
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        "$divide": [
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          "$score", "$maxScore"
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        ]
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      }
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    }
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}])

1
db.movies.aggregate([{
2
    "$search": {
3
      "text": {
4
        "path": "title",
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        "query": "men",
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        "score": {
7
          "function":{
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            "multiply":[
9
              {
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                "path": {
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                  "value": "imdb.rating",
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                  "undefined": 2
13
                }
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              },
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              {
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                "score": "relevance"
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              }
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            ]
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          }
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        }
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      }
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    }
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  },
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  {
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    "$limit": 5
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  },
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  {
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    "$addFields": {
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      "score": {
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        "$meta": "searchScore"
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      }
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    }
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  },
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  {
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    "$setWindowFields": {
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      "output": {
37
        "maxScore": {
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          "$max": "$score"
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        }
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      }
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    }
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  },
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  {
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    "$addFields": {
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      "normalizedScore": {
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        "$divide": [
47
          "$score", "$maxScore"
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        ]
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      }
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    }
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  },
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  {
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    "$project": {
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      "_id": 0,
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      "title": 1,
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      "score": 1,
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      "maxScore": 1,
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      "normalizedScore": 1
59
    }
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}])

1
db.movies.aggregate([{
2
    "$search": {
3
      "text": {
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        "path": "title",
5
        "query": "shop",
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        "score": {
7
          "function":{
8
            "gauss": {
9
              "path": {
10
                "value": "imdb.rating",
11
                "undefined": 4.6
12
              },
13
              "origin": 9.5,
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              "scale": 5,
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              "offset": 0,
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              "decay": 0.5
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            }
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          }
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        }
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      }
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    }
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  },
23
  {
24
    "$limit": 5
25
  },
26
  {
27
    "$addFields": {
28
      "score": {
29
        "$meta": "searchScore"
30
      }
31
    }
32
  },
33
  {
34
    "$setWindowFields": {
35
      "output": {
36
        "maxScore": {
37
          "$max": "$score"
38
        }
39
      }
40
    }
41
  },
42
  {
43
    "$addFields": {
44
      "normalizedScore": {
45
        "$divide": [
46
          "$score", "$maxScore"
47
        ]
48
      }
49
    }
50
  },
51
  {
52
    "$project": {
53
      "_id": 0,
54
      "title": 1,
55
      "score": 1,
56
      "maxScore": 1,
57
      "normalizedScore": 1
58
    }
59
}])

1
db.movies.aggregate([{
2
    "$search": {
3
      "text": {
4
        "path": "title",
5
        "query": "men",
6
        "score": {
7
          "function":{
8
            "path": {
9
              "value": "imdb.rating",
10
              "undefined": 4.6
11
            }
12
          }
13
        }
14
      }
15
    }
16
  },
17
  {
18
    "$limit": 5
19
  },
20
  {
21
    "$addFields": {
22
      "score": {
23
        "$meta": "searchScore"
24
      }
25
    }
26
  },
27
  {
28
    "$setWindowFields": {
29
      "output": {
30
        "maxScore": {
31
          "$max": "$score"
32
        }
33
      }
34
    }
35
  },
36
  {
37
    "$addFields": {
38
      "normalizedScore": {
39
        "$divide": [
40
          "$score", "$maxScore"
41
        ]
42
      }
43
    }
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  },
45
  {
46
    "$project": {
47
      "_id": 0,
48
      "title": 1,
49
      "score": 1,
50
      "maxScore": 1,
51
      "normalizedScore": 1
52
    }
53
}])

1
db.movies.aggregate([{
2
    "$search": {
3
        "text": {
4
          "path": "title",
5
          "query": "men",
6
          "score": {
7
            "function": {
8
              "log": {
9
                "path": {
10
                "value": "imdb.rating",
11
                "undefined": 10
12
                }
13
              }
14
            }
15
          }
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        }
17
      }
18
    },
19
    {
20
      "$limit": 5
21
    },
22
    {
23
      "$addFields": {
24
        "score": {
25
          "$meta": "searchScore"
26
        }
27
      }
28
    },
29
    {
30
      "$setWindowFields": {
31
        "output": {
32
          "maxScore": {
33
            "$max": "$score"
34
          }
35
        }
36
      }
37
    },
38
    {
39
      "$addFields": {
40
        "normalizedScore": {
41
          "$divide": [
42
              "$score", "$maxScore"
43
        ]
44
        }
45
      }
46
    },
47
    {
48
      "$project": {
49
        "_id": 0,
50
        "title": 1,
51
        "score": 1,
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        "maxScore": 1,
53
        "normalizedScore": 1
54
      }
55
    }
56
])