Author

Yaguang Song

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#artificial intelligence Preprint Sep 2026

CASS: Contribution-Aware Structured Sparsity for Model Merging

Model merging integrates task-specific fine-tuned models into a single multi-task model, but often suffers from parameter interference caused by conflicting task-vector updates. Existing methods typically mitigate conflicts by pruning task vectors based on weight magnitude or random heuristics, treating Transformers as...

Yan Li, Gui-Ping Cao, Meng-Du Xu et al. · 0 citations

Preprint Aug 2026

AgentPatch: Coarse-to-Fine Weak-Task Repair for Merging Agentic Multimodal Large Language Models

AgentPatch is proposed, a training-free coarse-to-fine repair framework that improves diverse merged backbones, alleviates weak-task degradation, and better balances weak-task recovery with the preservation of complementary search and agentic visual processing capabilities.

Zibo Shao, Baochen Xiong, Chengdong Xu et al. · 0 citations