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Xin Fan

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#artificial intelligence Preprint Aug 2026

LoRA-GA$^2$: Low Rank Adaptation with Multi-step Gradient Adaptive Alignment

This paper introduces a lightweight probe for multi-step gradients of pretrained weights that incurs no additional GPU memory cost and only marginal time overhead, and employs a spectrum-aware, importance-based rank allocation and optimal initialization derived from multi-step gradients.

Haonan He, Xin Fan · 0 citations
Conference Open access Sep 2026

Snap2Review: Vision-Grounded Retrieval and Pairwise Preference Alignment for Personalized Reviews Generation

This work proposes Snap2Review, a novel framework that harmonizes cross-modal retrieval with fine-grained preference learning, and introduces Tri-DPO, which employs a stratified negative sampling strategy with varying difficulty levels to force the model to discern fine-grained user preferences.

Honggyan Xu, Lei Zou, De-Xiang Zhao et al. · 0 citations

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