Elasticsearch 日本語検索用スキーマ n-gram 形態素解析

es-jp-ngram-kuromoji-schema.json

{
  "settings": {
    "analysis": {
      "analyzer": {
        "ja_ngram_analyzer": {
          "tokenizer": "ja_ngram_tokenizer"
        }
      },
      "tokenizer": {
        "ja_ngram_tokenizer": {
          "type": "ngram",
          "min_gram": 2,
          "max_gram": 3,
          "token_chars": [
            "letter",
            "digit"
          ]
        }
      }
    }
  },
  "mappings": {
    "docs":{
      "properties": {
        "title": {
          "type":     "text",
          "analyzer": "standard", 
          "fields": {
            "ngram": {
              "type":     "text",
              "analyzer": "ja_ngram_analyzer" 
            },
            "kuromoji": {
              "type":     "text",
              "analyzer": "kuromoji" 
            }
          }
        }
      }
    }
  }
}