← Search

Zexi Liu

4 accepted papers

2026

ML-Agent: Reinforcing LLM Agents for Autonomous Machine Learning Engineering

ICML 2026poster

The emergence of large language model (LLM)-based agents has significantly advanced the development of autonomous machine learning (ML) engineering. However, the dominant prompt-based paradigm exhibits limitations: smaller models lack the capacity to learn from execution trajectories for generalizat…

Cited by 0SourcecodeScholar
2025

Synthesizing Post-Training Data for LLMs through Multi-Agent Simulation

ACL 2025long

Post-training is essential for enabling large language models (LLMs) to follow human instructions. However, its effectiveness depends on high-quality instruction data, which is challenging to obtain in the real world due to privacy concerns, data scarcity, and high annotation costs. To fill this gap…

2025

Training-Free Message Passing for Learning on Hypergraphs

ICLR 2025poster

Hypergraphs are crucial for modelling higher-order interactions in real-world data. Hypergraph neural networks (HNNs) effectively utilise these structures by message passing to generate informative node features for various downstream tasks like node classification. However, the message passing modu…

Cited by 0SourcePDFScholar
2024

Hypergraph Transformer for Semi-Supervised Classification

ICASSP 2024accepted

Hypergraphs play a pivotal role in the modelling of data featuring higher-order relations involving more than two entities. Hypergraph neural networks emerge as a powerful tool for processing hypergraph-structured data, delivering remarkable performance across various tasks, e.g., hypergraph node cl…

Cited by 0SourceScholar