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cs.DC2026
Repair Changes Which Layers to Remove: Exact Optima for Depth Pruning of Language Models
Jianchang Su, Dawei Xiang, Yifan Zhang +1
Depth pruning removes entire transformer layers to make large language models faster, and recent methods recover quality by replacing the removed layers with a training-free linear…
cs.CR2026
Stronger Judges Do Not See More: Deployment-Integrity Blindness in LLM Evaluation
Jianchang Su, Dawei Xiang, Yifan Zhang +1
LLM-agent evaluation reports behavioral scores but leaves the identity of the deployed runtime stack unreported. A tampered deployment that preserves evaluated outputs passes every…
cs.LG2026
Latency-Quality Routing for Functionally Equivalent Tools in LLM Agents
Kexin Chu, Dawei Xiang, Wei Zhang
Tool-augmented LLM agents increasingly access the same tool type through multiple functionally equivalent providers, such as web-search APIs, retrievers, or LLM backends exposed be…