Question

我在我的rails app中有这个查询：

query = { query: { bool: { must: [], minimum_should_match:"75%" }}, sort: { _score: { order: :desc }, year: { order: :desc, ignore_unmapped: true }} }
    query[:query][:bool][:must] << { match: { winery: @winery.name }} # use winery field, not searchable
    query[:query][:bool][:must] << { term: { country_id: @winery.country_id }} if !@winery.country_id.nil?
    query[:query][:bool][:must] << { term: { region_id: @winery.region_id }} if !@winery.region_id.nil?          
    @results = Wine.search(query)

事实上，我们不知道在哪里放置 minimum_should_match 选项。只有在必须之后才允许。问题是我可以改变75％的值，我的结果没有任何变化。

我的目标是仅将其用于 match：{winery：@ winery.name} 字段。

-

例如，我目前正在搜索 Quinta da Romaneira 作为@ winery.name。

我得到了：

Quinta da Romaneira
Pinteveira

结果。

所以我希望查询只返回第一个，第二个ngrams距离太长。

使用像这样的更经典的查询：

self.search(query: {match: {winery: {query:search, minimum_should_match:"75%"}}})

minimum_should_match 工作正常。

那么如何更改我的第一个查询以便minimum_should_match可以对结果产生影响？

我的映射是在@ winery.name字段中使用ngrams：

settings index: { number_of_shards: 1, number_of_replicas: 1 }, analysis: {
      analyzer: {
        custom_index_analyzer: {
          type: "custom",
          tokenizer: "standard",
          filter: ["lowercase", "asciifolding", "custom_word_delimiter", "custom_fr_stopwords", "custom_en_stopwords", "custom_de_stopwords", "custom_es_stopwords", "custom_it_stopwords", "custom_pt_stopwords", "custom_unique_token", "custom_tokenizer"]
        },
        custom_search_analyzer: {
          type: "custom",
          tokenizer: "standard",
          filter: ["lowercase", "asciifolding", "custom_word_delimiter", "custom_fr_stopwords", "custom_en_stopwords", "custom_de_stopwords", "custom_es_stopwords", "custom_it_stopwords", "custom_pt_stopwords", "custom_unique_token", "custom_tokenizer"]
        }
      },
      filter: {
        custom_word_delimiter: {
          type: "word_delimiter"
        },
        custom_unique_token: {
          type: "unique",
          only_on_same_position: "false"
        },      
        custom_tokenizer: {
          type: "nGram",
          min_gram: "3",
          max_gram: "8",
          token_chars: [ "letter", "digit" ]
        }
      }
    } do
      mappings dynamic: 'false' do
        indexes :winery, analyzer: "custom_index_analyzer", search_analyzer: "custom_search_analyzer"
        indexes :name, analyzer: "custom_index_analyzer", search_analyzer: "custom_search_analyzer"
        indexes :country_id, type: "integer"
        indexes :region_id, type: "integer"
      end
    end

感谢。

ElasticSearch：如何在此查询中使用minimum_should_match？

0 个答案: