ES设置字段搜索权重——Query-Time Boosting

最新推荐文章于 2025-03-25 21:42:00 发布

转载最新推荐文章于 2025-03-25 21:42:00 发布 · 1.4k 阅读

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#人工智能 #c/c++ #大数据

本文介绍如何在Elasticsearch中使用查询时间提升功能来调整不同查询条件的重要性。通过设置boost参数，可以使某些字段如标题相对于其他字段如内容具有更高的权重。

Query-Time Boosting

In Prioritizing Clauses, we explained how you could use the boost parameter at search time to give one query clause more importance than another. For instance:

GET /_search
{
  "query": { "bool": { "should": [ { "match": { "title": { "query": "quick brown fox", "boost": 2  } } }, { "match": {  "content": "quick brown fox" } } ] } } }

	The `title` query clause is twice as important as the `content` query clause, because it has been boosted by a factor of `2`.
	A query clause without a `boost` value has a neutral boost of `1`.