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Jiachen Lei

4 accepted papers

2026

Advancing End-to-End Pixel-Space Generative Modeling via Self-Supervised Pre-Training

ICLR 2026poster

Pixel-space generative models are often more difficult to train and generally underperform compared to their latent-space counterparts, leaving a persistent performance and efficiency gap. In this paper, we introduce a novel two-stage training framework that closes this gap for pixel-space diffusion…

Cited by 0SourceScholar
2026

Extending One-Step Image Generation from Class Labels to Text via Discriminative Text Representation

CVPR 2026

Few-step generation has been a long-standing goal, with recent one-step generation methods exemplified by MeanFlow achieving remarkable results. Existing research on MeanFlow primarily focuses on class-to-image generation. However, an intuitive yet unexplored direction is to extend the condition fro

Cited by 0SourcecodeScholar
2025

Robust Representation Consistency Model via Contrastive Denoising

ICLR 2025poster

Robustness is essential for deep neural networks, especially in security-sensitive applications. To this end, randomized smoothing provides theoretical guarantees for certifying robustness against adversarial perturbations. Recently, diffusion models have been successfully employed for randomized sm…

2024

Consistency Purification: Effective and Efficient Diffusion Purification towards Certified Robustness

NeurIPS 2024poster

Diffusion Purification, purifying noised images with diffusion models, has been widely used for enhancing certified robustness via randomized smoothing. However, existing frameworks often grapple with the balance between efficiency and effectiveness. While the Denoising Diffusion Probabilistic Model…

Cited by 0SourcePDFScholar