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Author

Guomin Sun

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Aug 2026

SPIRA: Sparse Information-Geometric Rank Adaptation for Parameter-Efficient Fine-Tuning of Large Pretrained Models.

Downstream adaptation of large pretrained models (LPMs) via full-parameter fine-tuning is computationally prohibitive. Parameter-efficient fine-tuning (PEFT) methods, such as the widely used Low-Rank Adaptation (LoRA), reduce this cost but still parameterize dense updates over the selected weight matrices. This support...

Zhongyi Wen, Zhikai Zhai, Guo-Min Sun et al. · 0 citations
Jul 2026

RadioTrace: Transmitter-Aware Diffusion for Radio Map Estimation Without Deployment-Time Fine-Tuning

RadioTrace is proposed, a novel RM estimation framework without deployment-time fine-tuning that tightly integrates sparse RSS measurements with a frozen pre-trained diffusion prior and achieves competitive performance with state-of-the-art learning-based methods under random sampling, and maintains strong reconstructi...

Liu Yang, Qiang Li, Zhuo Cao et al. · 0 citations

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