Author

Bing-Bing Wen

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#natural language process... Preprint Sep 2026

You're Hired: Strategic Model Selection for LLM Collaboration

While multi-agent and model collaboration algorithms gain traction to combine the strengths of diverse Large Language Models (LLMs), existing systems remain bottlenecked on pre-defined and hand-crafted model pools. In this work, we investigate the problem of model selection in multi-LLM systems. We propose and systemat...

Zong-Wan Cao, Zi-Yuan Yang, Shang-Bin Feng et al. · 0 citations

#natural language process... Preprint Sep 2026

Spurious Tool Use: When RL Agents Learn the Wrong Reason to Act

Large language model (LLM) agents increasingly interleave natural language reasoning with external tools such as web search and code execution. These tool-use policies are often optimized via reinforcement learning (RL), which can amplify spurious correlations in the training data. In this work, we study when and why R...

Yi-Wei Yang, Hao-Xiang Zhang, Bing-Bing Wen et al. · 0 citations