"type" : "minhash",
          "seed" : 1,
          "bit" : 2,
          "size" : 64
        },
        "synonym_filter" : {
          "type" : "synonym_graph",
          "synonyms_path": "${fess.dictionary.path}synonym.txt"
        }
      },
      "tokenizer": {
        "japanese_tokenizer": {
          "type": "fess_japanese_tokenizer",
          "mode": "normal",