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« kuromoji_tokenizer kuromoji_part_of_speech token filter »
Elastic Docs ›Elasticsearch Plugins and Integrations [2.2] ›Analysis Plugins ›Japanese (kuromoji) Analysis Plugin

kuromoji_baseform token filter

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kuromoji_baseform token filter

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The kuromoji_baseform token filter replaces terms with their BaseFormAttribute. This acts as a lemmatizer for verbs and adjectives.

PUT kuromoji_sample
{
  "settings": {
    "index": {
      "analysis": {
        "analyzer": {
          "my_analyzer": {
            "tokenizer": "kuromoji_tokenizer",
            "filter": [
              "kuromoji_baseform"
            ]
          }
        }
      }
    }
  }
}

POST kuromoji_sample/_analyze?analyzer=my_analyzer&text=飲み
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# Result
{
  "tokens" : [ {
    "token" : "飲む",
    "start_offset" : 0,
    "end_offset" : 2,
    "type" : "word",
    "position" : 1
  } ]
}
« kuromoji_tokenizer kuromoji_part_of_speech token filter »
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