13 papers
CSAttention: Centroid-Scoring Attention for Accelerating LLM Inference
Chuxu Song, Zhencan Peng, Jiuqi Wei +1
Long-context LLMs increasingly rely on extended, reusable prefill prompts for agents and domain Q&A, pushing attention and KV-cache to become the dominant decode-time bottlenecks.…
PDET-LSH: Scalable In-Memory Indexing for High-Dimensional Approximate Nearest Neighbor Search with Quality Guarantees
Jiuqi Wei, Xiaodong Lee, Botao Peng +3
Locality-sensitive hashing (LSH) is a well-known solution for approximate nearest neighbor (ANN) search with theoretical guarantees. Traditional LSH-based methods mainly focus on i…
TaCo: Data-adaptive and Query-aware Subspace Collision for High-dimensional Approximate Nearest Neighbor Search
Jiuqi Wei, Zhenyu Liao, Ruoyu Han +3
Approximate Nearest Neighbor Search (ANNS) in high-dimensional Euclidean spaces is a fundamental problem with broad applications. Subspace Collision is a newly proposed ANNS framew…
MCI-SQL: Text-to-SQL with Metadata-Complete Context and Intermediate Correction
Qin Wang, Youhuan Li, Suixi Lin +5
Text-to-SQL aims to translate natural language queries into SQL statements. Existing methods typically follow a pipeline of pre-processing, schema linking, candidate SQL generation…
The Virtuous Cycle: AI-Powered Vector Search and Vector Search-Augmented AI
Jiuqi Wei, Quanqing Xu, Chuanhui Yang
Modern AI and vector search are rapidly converging, forming a promising research frontier in intelligent information systems. On one hand, advances in AI have substantially improve…
A Tree-Structured Two-Phase Commit Framework for OceanBase: Optimizing Scalability and Consistency
Quanqing Xu, Chen Qian, Chuanhui Yang +4
Modern distributed databases face challenges in achieving transactional consistency across distributed partitions. Traditional two-phase commit (2PC) protocols incur high coordinat…