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Kejiang Chen

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#artificial intelligence Preprint Sep 2026

Fingerprinting Multimodal Large Language Models

While multimodal large language models (MLLMs) enable a wide range of image-text reasoning tasks, recent incidents indicate that they are vulnerable to illicit deployment and unauthorized distillation. Existing solutions for model provenance are typically confounded by shared language backbones in MLLMs and struggle to...

Chao Huang, Meng Tong, Kejiang Chen · 0 citations
Jul 2026

DNA: Dual-stage Native Attribution for Generated Image Source Tracing

Dual-stage Native Attribution (DNA) is proposed, a coarse-to-fine framework that follows this hierarchy without additional neural-network training that achieves 89.11% end-to-end attribution accuracy on a task where random guessing accuracy is below 1% and outperforms the strongest baseline by 33.81% even when AEDR is...

Chao Wang, Ke-Jiang Chen, Zi-Jin Yang et al. · 0 citations
Jul 2026

FARI: Robust One-Step Inversion for Watermarking in Diffusion Models

FARI is proposed, a one-step inversion framework paired with lightweight adversarial LoRA fine-tuning of the denoiser for watermark extraction that surpasses 50-step DDIM inversion on watermark-verification robustness while dramatically reducing inference time.

Jindong Yang, Han Fang, Wei-Ming Zhang et al. · 1 citation

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