数组字段得分策略的问题

[ruby_2016]

GET blog/_search
{
  "query": {
    "match": {
      "tags": {
        "query": "数学"
      }
    }
  }
}


# 返回
      {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "4mVt8IEBjnqWAWJWaCpF",
        "_score" : 0.31713706,
        "_source" : {
          "tags" : [
            "数学",
            "化学"
          ]
        }
      },
      {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "4GVt8IEBjnqWAWJWFCqt",
        "_score" : 0.26706278,
        "_source" : {
          "tags" : [
            "数学",
            "语文"
          ]
        }
      }

第一个文档匹配到了数组的第一个元素【数学】和第二个元素的【学】，第二个匹配到了数组的第一个元素【数学】，现在想用匹配度的最高的当成文档的score，比如第一个文档用匹配到的【数学】的score当成文档的score，请问可以这样么

[ruby_2016]

改了下结构，改为nested

PUT blog
{
  "mappings": {
    "properties": {
      "tags": {
        "type": "nested" 
      }
    }
  }
}

POST blog/_doc
{
  "tags": [
    {"name": "数学"},
    {"name": "化学"}
  ]
}

POST blog/_doc
{
  "tags": [
    {"name": "数学"},
    {"name": "语文"}
  ]
}

GET blog/_search
{
  "query": {
    "nested": {
      "path": "tags",
      "query": {
        "match": {
          "tags.name": "数学"
        }
      },
      "score_mode": "max"
    }
  }
}