Elasticsearch 查询：提升特定字段

Question

我正在使用 Elasticsearch 2.4.3 并希望增加查询中的特定字段。这可能吗？我只知道如何提高索引。

您好！

更新

映射：

"firstName":{"type":"string",
     "analyzer":"customNGram"
},
"lastName":{
     "type":"string",
     "analyzer":"customNGram"
},
"note":{
     "type":"string",
     "analyzer":"customNGram"
}

查询(Java API):

    QueryBuilder qb = new BoolQueryBuilder()
        .must(QueryBuilders.matchQuery("_all", term)
                .analyzer("atsCustomSearchAnalyzer")
                .operator(Operator.AND));

    SearchRequestBuilder searchRequestBuilder = elasticsearchClient.prepareSearch("persons", "activities").setTypes("person", "activity")
            .setQuery(qb)
            .addHighlightedField("*").setHighlighterRequireFieldMatch(false)
            .setHighlighterOrder("score")
            .setHighlighterFragmentSize(150)
            .setHighlighterForceSource(true)
            .setSize(100)
            .addIndexBoost("persons", 200)
            .setFrom(offset); 

    return searchRequestBuilder.execute().get();

Answer 1

如果您拆分 match-query 以匹配各个字段，例如使用多重匹配查询 (https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-multi-match-query.html)，您可以提升您喜欢的字段。所以像这样：

QueryBuilder qb = new BoolQueryBuilder()
    .must(QueryBuilders.multiMatchQuery(term, "firstName^3",
    "lastName^3", "note")
            .analyzer("atsCustomSearchAnalyzer")
            .operator(Operator.AND));

相对于备注字段，名字和姓氏应该提高 3 倍。

Elasticsearch 查询：提升特定字段

Elasticsearch Query: Boosting specific field

field

elasticsearch

boosting