Skip to content
Log in
Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

Author

Zhiwei Zhang

h-index 0 View on Semantic Scholar

We have 2 of 2 papers

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

Book Open access Aug 2026

Beyond Structure-Driven Tuning: Cost-Aligned Graph Optimization for Approximate Nearest Neighbor Search

PIGR (Post-hoc Iterative Graph Refinement), a trace-driven framework that explicitly aligns efficiency with observed search behavior, is introduced, which delivers 1.3x-2.5x speedups at near-exact recall across diverse datasets and index families, consistently outperforming the best build-time tuned baselines.

Zhiwei Zhang, Weiguo Zheng · 0 citations
Book Open access Aug 2026

Beyond Structure-Driven Tuning: Cost-Aligned Graph Optimization for Approximate Nearest Neighbor Search

Graph-based approximate nearest neighbor search (ANNS) is widely used in vector databases and retrieval systems. Most existing methods typically rely on structure-driven index construction and tuning, building graph topologies that approximate idealized geometric archetypes to promote navigability. However, geometric p...

Zhiwei Zhang, Weiguo Zheng · 0 citations

We use cookies to run the site and, with your consent, for analytics and to show ads. See our Cookie Policy.