# HQANN: Efficient and Robust Similarity Search for Hybrid Queries with Structured and Unstructured Constraints

> Research article (Proceedings of the 31st ACM International Conference on Information & Knowledge Management, 2022) · cited 24× · AI/ML

**Wikidata**: [openalex:W4306317701](https://www.wikidata.org/wiki/openalex:W4306317701)  
**Source**: https://4ort.xyz/entity/hqann-efficient-and-robust-similarity-search-for-hybrid-queries-with-structured-and-unstructured-constraints