zoukankan      html  css  js  c++  java
  • es分词器

    1、默认的分词器

    standard

    standard tokenizer:以单词边界进行切分
    standard token filter:什么都不做
    lowercase token filter:将所有字母转换为小写
    stop token filer(默认被禁用):移除停用词,比如a the it等等

    2、修改分词器的设置

    启用english停用词token filter

    PUT /my_index
    {
      "settings": {
        "analysis": {
          "analyzer": {
            "es_std": {
              "type": "standard",
              "stopwords": "_english_"
            }
          }
        }
      }
    }

    GET /my_index/_analyze
    {
      "analyzer": "standard",
      "text": "a dog is in the house"
    }

    GET /my_index/_analyze
    {
      "analyzer": "es_std",
      "text":"a dog is in the house"
    }

    3、定制化自己的分词器

    PUT /my_index
    {
      "settings": {
        "analysis": {
          "char_filter": {
            "&_to_and": {
              "type": "mapping",
              "mappings": ["&=> and"]
            }
          },
          "filter": {
            "my_stopwords": {
                "type": "stop",
                "stopwords": ["the", "a"]
            }
          },
          "analyzer": {
            "my_analyzer": {
              "type": "custom",
              "char_filter": ["html_strip", "&_to_and"],
              "tokenizer": "standard",
              "filter": ["lowercase", "my_stopwords"]
            }
          }
        }
      }
    }

    GET /my_index/_analyze
    {
      "text": "tom&jerry are a friend in the house, <a>, HAHA!!",
      "analyzer": "my_analyzer"
    }

    PUT /my_index/_mapping/my_type
    {
      "properties": {
        "content": {
          "type": "text",
          "analyzer": "my_analyzer"
        }
      }
    }

  • 相关阅读:
    用SQL语言操作数据
    用表组织数据
    第一个C#程序
    利用CSS3制作网页动画
    CSS3美化网页元素
    列表、表格与媒体元素
    表单
    HTML5基础
    使用Java编译思想
    Day06:方法 / 猜字母游戏
  • 原文地址:https://www.cnblogs.com/qinjf/p/8546440.html
Copyright © 2011-2022 走看看