elasticsearch学习之根据发布时间设置衰减函数

衰减函数decay functionion 高斯衰减

GET _search

{

  "_source": ["title","release_date"],

  "query": {

    "function_score": {

      "query": {

        "match_all": {}

      },

      "functions": [

        {

          "gauss": {

            "release_date": {

              "origin": "now",

              "scale": "900d",

              "decay": 0.5

            }

          }

        }

      ]

    }

  }

}