es suggest did you mean资料

term suggester 功能介绍

term suggester 根据提供的文档提供搜索关键词的建议，也就是关键词自动纠错。该链接介绍如何使用 term suggester 语法。term suggester 是支持中文的，必须非常小心参数 min_word_length，默认值为 4，是指推荐词的长度大于 4 才会被显示，设置小一些能够开到效果（本人就被这个参数坑了，误以为 term suggester 不支持中文，绕了一大圈）。

本人使用的查询语法

{
	"from": 0,"size": 0,"suggest": {
		"didyoumean": {
			"text": "长安城北京城","term": {
				"field": "search_text_new","analyzer": "ik_smart","size": 5,"suggest_mode": "always","min_word_length": 2
			}
		}
	}
}

结果：
{
   "took": 32,"timed_out": false,"_shards": {
      "total": 5,"successful": 5,"failed": 0
   },"hits": {
      "total": 2267687,"max_score": 0,"hits": []
   },"suggest": {
      "didyoumean": [
         {
            "text": "长安城","offset": 0,"length": 3,"options": [
               {
                  "text": "长安街","score": 0.6666666,"freq": 2
               },{
                  "text": "长安","score": 0.5,"freq": 256
               }
            ]
         },{
            "text": "北京城","offset": 3,"options": [
               {
                  "text": "北京人","freq": 89
               },{
                  "text": "北京大","freq": 68
               }
            ]
         }
      ]
   }
}

term suggester 参数

term suggester 用到的一些参数及说明。

phrase suggester

phrase Suggester 也是提供关键词自动纠错功能，是 term suggester 的升级版。

completion suggester

Completion Suggester 前缀匹配，不具有像 term 以及 phrase 关键词的自动纠错功能，是一种自动补全功能。

completion suggester 中文使用示例

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2017.4.5 20:00