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Lizhu Zhang

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#artificial intelligence Preprint Sep 2026

MLToolBench: Learning Tool-Augmented Agents for Machine Learning Development

Machine learning engineering (MLE) agents have made substantial progress, but learning through ML experimentation remains costly in time and computation. Synthetic environments reduce these costs while introducing variations in data and experimental settings that require task-specific diagnosis. Access to diagnostic to...

Xin Yu, Li-Zhu Zhang, Jiamu Bai et al. · 0 citations
Preprint Aug 2026

ConnectionMind: Leveraging Social Networks and Large Language Models for Personalized Recommendation at Meta

Modern recommendation systems on social media platforms such as Meta must model complex social relationships, including friendships, group memberships, and creator interactions, alongside massive and heterogeneous content such as text and video. Traditional recommendation models, however, often omit these signals or tr...

Haoyu Han, Yuming Liu, Lei Huang et al. · 0 citations
#natural language process... Preprint Sep 2026

CORAL: An LLM-Native Harness for Production Recommender Systems

Production recommender systems shape what billions of people see, and sustaining their performance requires continual optimization: as content, user behavior, and upstream models shift, the choices governing retrieval, ranking, and serving must be revisited. Traditionally, human engineers test such changes through onli...

Muhammad Azhar, Yu-Hang Zhou, Gilbert Jiang et al. · 1 citation
Jul 2026

Remember When It Matters: Proactive Memory Agent for Long-Horizon Agents

Ablations show that selective intervention outperforms passive bank exposure, always-on injection, advisor-only guidance, advisor-only guidance, and general retrieval, and general retrieval and that selective intervention outperforms passive bank exposure, always-on injection, advisor-only guidance, and general retriev...

Yi-Fan Wu, Lizhu Zhang, Yu-Hang Zhou et al. · 2 citations

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