如何在 Elasticsearch 中有条件地调用高斯函数？

Question

我的网站有一个搜索索引，其中包含（除其他外）以下字段：

类型标题 body published_at

我想做的是只在type='article':

时执行下面的gauss函数

        {
          "gauss": {
            "published_at": {
              "scale": "14d",
              "offset": "7d",
              "decay": 0.95
            }
          }
        },

基本上，我想保持所有类型的搜索结果相关，但允许文章老化并慢慢降低排名。

谁能帮我解决这个问题，因为我无法解决。

这是完整的 function_score，其中包括不同类型值的权重：

    "function_score": {
      "functions": [
        {
          "gauss": {
            "published_at": {
              "scale": "14d",
              "offset": "7d",
              "decay": 0.95
            }
          }
        },
        {
          "filter": {
            "match": {
              "type": "programme"
            }
          },
          "weight": 60
        },
        {
          "filter": {
            "match": {
              "type": "podcast"
            }
          },
          "weight": 50
        },
        {
          "filter": {
            "match": {
              "type": "article"
            }
          },
          "weight": 40
        },
        {
          "filter": {
            "match": {
              "type": "clip"
            }
          },
          "weight": 30
        }
      ],

Answer 1

您只需将 gauss 函数移动到您在 type: article 上设置过滤器的位置：

  "function_score": {
    "functions": [
      {
        "filter": {
          "match": {
            "type": "programme"
          }
        },
        "weight": 60
      },
      {
        "filter": {
          "match": {
            "type": "podcast"
          }
        },
        "weight": 50
      },
      {
        "filter": {
          "match": {
            "type": "article"
          }
        },
        "gauss": {
          "published_at": {
            "scale": "14d",
            "offset": "7d",
            "decay": 0.95
          }
        },
        "weight": 40
      },
      {
        "filter": {
          "match": {
            "type": "clip"
          }
        },
        "weight": 30
      }
    ]
  }

如何在 Elasticsearch 中有条件地调用高斯函数？

How do I conditionally call a gauss function in Elasticsearch?

elasticsearch

gauss