elasticsearch - 文本 block 上的word_delimiter

Question

看来word_delimiter仅设计用于单个术语。如果我有一段文本如下所示，该怎么办:

 "Contra-indications of paracetamol can be of certain sorts"

在这种情况下， word_delimiter接受整个句子并将其连接起来，而我只需要将其连接起来即可，以便我可以在文本块内搜索 "Contra-indications"， contra indications和 contra-indications。

Answer 1

您需要一个这样的分析器:

{
  "settings": {
    "analysis": {
      "filter": {
        "delimiter_filter": {
          "type": "word_delimiter",
          "catenate_words": true,
          "preserve_original": true
        }
      },
      "analyzer": {
        "delimiter_analyzer": {
          "type": "custom",
          "tokenizer": "whitespace",
          "filter": [
            "lowercase",
            "delimiter_filter"
          ]
        }
      }
    }
  },
  "mappings": {
    "assets": {
      "properties": {
        "domain": {
          "type": "string",
          "analyzer": "delimiter_analyzer"
        }
      }
    }
  }
}

对于您的示例文本 Contra-indications of paracetamol can be of certain sorts，它们是生成的术语:

           "domain": [
              "be",
              "can",
              "certain",
              "contra",
              "contra-indications",
              "contraindications",
              "indications",
              "of",
              "paracetamol",
              "sorts"
           ]