collaborators

6 papers

eess.AS2026

CTC-TTS: LLM-based dual-streaming text-to-speech with CTC alignment

Hanwen Liu, Saierdaer Yusuyin, Hao Huang +1

Large-language-model (LLM)-based text-to-speech (TTS) systems can generate natural speech, but most are not designed for low-latency dual-streaming synthesis. High-quality dual-str…

cs.DB2026

Towards a Hybrid Quantum-Classical Computing Framework for Database Optimization Problems in Real Time Setup

Hanwen Liu, Ibrahim Sabek

Quantum computing has shown promise for solving complex optimization problems in databases, such as join ordering and index selection. Prior work often submits formulated problems…

cs.DB2026

Is Quantum Computing Ready for Real-Time Database Optimization?

Hanwen Liu, Ibrahim Sabek

Database systems encompass several performance-critical optimization tasks, such as join ordering and index tuning. As data volumes grow and workloads become more complex, these pr…

cs.DB2025

SEFRQO: A Self-Evolving Fine-Tuned RAG-Based Query Optimizer

Hanwen Liu, Qihan Zhang, Ryan Marcus +1

Query optimization is a crucial problem in database systems that has been studied for decades. Learned query optimizers (LQOs) can improve performance over time by incorporating fe…

cs.DB2025

Conformal Prediction for Verifiable Learned Query Optimization

Hanwen Liu, Shashank Giridhara, Ibrahim Sabek

Query optimization is critical in relational databases. Recently, numerous Learned Query Optimizers (LQOs) have been proposed, demonstrating superior performance over traditional h…

cs.LG2025

Mix-of-Granularity: Optimize the Chunking Granularity for Retrieval-Augmented Generation

Zijie Zhong, Hanwen Liu, Xiaoya Cui +2

Integrating information from various reference databases is a major challenge for Retrieval-Augmented Generation (RAG) systems because each knowledge source adopts a unique data st…