Relevance modeling aims to locate desirable items for corresponding queries, which is crucial for search engines to ensure user experience. Although most conventional approaches address this problem by assessing the semantic similarity between the query and item, pure semantic matching is not everything.

翻译：相关性建模旨在为对应查询定位所需项目，这对搜索引擎保障用户体验至关重要。尽管大多数传统方法通过评估查询与项目之间的语义相似性来解决该问题，但纯语义匹配并非万能的。