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爱沙尼亚语分析器

内置的 estonian 分析器可以使用以下命令应用于文本字段

PUT /estonian-index
{
  "mappings": {
    "properties": {
      "content": {
        "type": "text",
        "analyzer": "estonian"
      }
    }
  }
}

词干排除

您可以使用以下命令将 stem_exclusion 与此语言分析器一起使用

PUT index_with_stem_exclusion_estonian_analyzer
{
  "settings": {
    "analysis": {
      "analyzer": {
        "stem_exclusion_estonian_analyzer": {
          "type": "estonian",
          "stem_exclusion": ["autoriteet", "kinnitus"]
        }
      }
    }
  }
}

爱沙尼亚语分析器内部结构

estonian 分析器由以下组件构建而成

  • 分词器：standard

  • 词元过滤器

    • 小写
    • 停用词 (爱沙尼亚语)
    • 关键词
    • 词干提取器 (爱沙尼亚语)

自定义爱沙尼亚语分析器

您可以使用以下命令创建自定义爱沙尼亚语分析器

PUT /estonian-index
{
  "settings": {
    "analysis": {
      "filter": {
        "estonian_stop": {
          "type": "stop",
          "stopwords": "_estonian_"
        },
        "estonian_stemmer": {
          "type": "stemmer",
          "language": "estonian"
        },
        "estonian_keywords": {
          "type": "keyword_marker",
          "keywords": []
        }
      },
      "analyzer": {
        "estonian_analyzer": {
          "type": "custom",
          "tokenizer": "standard",
          "filter": [
            "lowercase",
            "estonian_stop",
            "estonian_keywords",
            "estonian_stemmer"
          ]
        }
      }
    }
  },
  "mappings": {
    "properties": {
      "content": {
        "type": "text",
        "analyzer": "estonian_analyzer"
      }
    }
  }
}

生成的词元

使用以下请求检查使用该分析器生成的词元

POST /estonian-index/_analyze
{
  "field": "content",
  "text": "Õpilased õpivad Tallinnas ja Eesti ülikoolides. Nende numbrid on 123456."
}

响应包含生成的词元

{
  "tokens": [
    {"token": "õpilase","start_offset": 0,"end_offset": 8,"type": "<ALPHANUM>","position": 0},
    {"token": "õpi","start_offset": 9,"end_offset": 15,"type": "<ALPHANUM>","position": 1},
    {"token": "tallinna","start_offset": 16,"end_offset": 25,"type": "<ALPHANUM>","position": 2},
    {"token": "eesti","start_offset": 29,"end_offset": 34,"type": "<ALPHANUM>","position": 4},
    {"token": "ülikooli","start_offset": 35,"end_offset": 46,"type": "<ALPHANUM>","position": 5},
    {"token": "nende","start_offset": 48,"end_offset": 53,"type": "<ALPHANUM>","position": 6},
    {"token": "numbri","start_offset": 54,"end_offset": 61,"type": "<ALPHANUM>","position": 7},
    {"token": "on","start_offset": 62,"end_offset": 64,"type": "<ALPHANUM>","position": 8},
    {"token": "123456","start_offset": 65,"end_offset": 71,"type": "<NUM>","position": 9}
  ]
}
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