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Hanzhen Zhao

3 accepted papers

2026

DiP: Taming Diffusion Models in Pixel Space

CVPR 2026

Diffusion models face a fundamental trade-off between generation quality and computational efficiency. Latent Diffusion Models (LDMs) offer an efficient solution but suffer from potential information loss and non-end-to-end training. In contrast, existing pixel space models bypass VAEs but are compu

Cited by 0SourcecodeScholar
2025

PaZO: Preconditioned Accelerated Zeroth-Order Optimization for Fine-Tuning LLMs

NeurIPS 2025poster

This paper introduces PaZO, a preconditioned accelerated zeroth-order optimization algorithm for fine-tuning large language models (LLMs). First, we theoretically demonstrate the necessity of preconditioning in zeroth-order optimization, proving that zeroth-order stochastic gradient descent (ZO…

Cited by 0SourceScholar
2025

SEPARATE: A Simple Low-rank Projection for Gradient Compression in Modern Large-scale Model Training Process

ICLR 2025poster

Training Large Language Models (LLMs) presents a significant communication bottleneck, predominantly due to the growing scale of the gradient to communicate across multi-device clusters. However, how to mitigate communication overhead in practice remains a formidable challenge due to the weakness of…

Cited by 0SourcePDFScholar