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Kuromoji 补全分词过滤器

kuromoji_completion 分词过滤器用于对日语中的片假名单词进行词干提取，这些单词通常用于表示外来词或借用词。此过滤器对于自动补全或建议查询特别有用，因为片假名单词的部分匹配可以扩展以包含其完整形式。

要使用此分词过滤器，您必须首先通过运行 bin/opensearch-plugin install analysis-kuromoji 在所有节点上安装 analysis-kuromoji 插件，然后重新启动集群。有关安装其他插件的更多信息，请参阅其他插件。

示例

以下示例请求创建了一个名为 kuromoji_sample 的新索引，并配置了一个带有 kuromoji_completion 过滤器的分析器

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

生成的词元

使用以下请求检查使用分析器和翻译为“使用计算机”的文本生成的 token

POST /kuromoji_sample/_analyze
{
  "analyzer": "my_analyzer",
  "text": "コンピューターを使う"
}

响应包含生成的词元

{
  "tokens": [
    {
      "token": "コンピューター", // The original Katakana word "computer".
      "start_offset": 0,
      "end_offset": 7,
      "type": "word",
      "position": 0
    },
    {
      "token": "konpyuーtaー", // Romanized version (Romaji) of "コンピューター".
      "start_offset": 0,
      "end_offset": 7,
      "type": "word",
      "position": 0
    },
    {
      "token": "konnpyuーtaー", // Another possible romanized version of "コンピューター" (with a slight variation in the spelling).
      "start_offset": 0,
      "end_offset": 7,
      "type": "word",
      "position": 0
    },
    {
      "token": "を", // A Japanese particle, "wo" or "o"
      "start_offset": 7,
      "end_offset": 8,
      "type": "word",
      "position": 1
    },
    {
      "token": "wo", // Romanized form of the particle "を" (often pronounced as "o").
      "start_offset": 7,
      "end_offset": 8,
      "type": "word",
      "position": 1
    },
    {
      "token": "o", // Another version of the romanization.
      "start_offset": 7,
      "end_offset": 8,
      "type": "word",
      "position": 1
    },
    {
      "token": "使う", // The verb "use" in Kanji.
      "start_offset": 8,
      "end_offset": 10,
      "type": "word",
      "position": 2
    },
    {
      "token": "tukau", // Romanized version of "使う"
      "start_offset": 8,
      "end_offset": 10,
      "type": "word",
      "position": 2
    },
    {
      "token": "tsukau", // Another romanized version of "使う", where "tsu" is more phonetically correct
      "start_offset": 8,
      "end_offset": 10,
      "type": "word",
      "position": 2
    }
  ]
}
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