Publications | Yunan Zhang | CS PhD Student

Research

DiskV: Disk-based Vector Search Optimized for Low-Cost Storage

Yunan Zhang, Yinghao He, Jiayi Liu, Jianguo Wang

Submitted to VLDB 2026

A disk-based vector index designed to achieve high search performance on commodity storage including HDDs and cloud block storages.
Efficient Vector Index Merging in Vector Databases

Chenzhe Jin, Yunan Zhang, Jiayi Liu, Jianguo Wang

In SIGMOD 2026

A methods for efficient graph vector index merging.
Fast Vector Search in PostgreSQL: A Decoupled Approach

Jiayi Liu, Yunan Zhang, Chenzhe Jin, Aditya Gupta, Shige Liu, Jianguo Wang

In CIDR 2026 • Paper

A decoupled approach for efficient vector search in PostgreSQL with comparable performance to specialized vector databases.
SingleStore-V: An Integrated Vector Database System in SingleStore

Cheng Chen, Chenzhe Jin, Yunan Zhang, Sasha Podolsky, Chun Wu, Szu-Po Wang, Eric Hanson, Zhou Sun, Robert Walzer, Jianguo Wang

In VLDB 2024 • Paper

Implemented SingleStore-V, a full-fledged, general-purpose vector database integrated into SingleStore.
Are There Fundamental Limitations in Supporting Vector Data Management in Relational Databases? A Case Study of PostgreSQL

Yunan Zhang, Shige Liu, Jianguo Wang

In ICDE 2024 • Paper

A case study of limits and practical solutions for implementing high-performance vector search in relational databases (PostgreSQL).