function_score in es

query.json

  {
    "query": {
      "function_score": {
        "functions": [
          {
             
              "script_score" : {
                  "script" : "_score * log10(max(doc['like_count'].value, 1)) + ((doc['created_at'].value/1000) - 1412092800)/604800.0"
              }
          }
        ],
        "query": {
            "multi_match": {
              "query": "java",
              "fields": ["title^3", "summary", "body"]
            }
          },
         "boost_mode": "replace"
      }
    }
  }