← Search

Zhihang Yuan

27 accepted papers

2026

INT vs. FP: A Comprehensive Study of Fine-Grained Low-bit Quantization Formats

ICML 2026poster

Modern AI hardware, such as Nvidia's Blackwell architecture, is increasingly embracing low-precision floating-point (FP) formats to handle the pervasive activation outliers in Large Language Models (LLMs). Despite this industry trend, a unified comparison of FP and integer (INT) quantization across …

Cited by 0SourceScholar
2026

MoDES: Accelerating Mixture-of-Experts Multimodal Large Language Models via Dynamic Expert Skipping

CVPR 2026

Mixture-of-Experts (MoE) Multimodal large language models (MLLMs) excel at vision-language tasks, but they suffer from high computational inefficiency. To reduce inference overhead, expert skipping methods have been proposed to deactivate redundant experts based on the current input tokens. However,

Cited by 0SourcecodeScholar
2026

OTARo: Once Tuning for All Precisions Toward Robust On-Device LLMs

AAAI 2026technical

Large Language Models (LLMs) fine-tuning techniques not only improve the adaptability to diverse downstream tasks, but also mitigate adverse effects of model quantization. Despite this, conventional quantization suffers from its structural limitation that hinders flexibility during the fine-tuning

Cited by 0SourcePDFScholar
2026

OmniFit: Bridging Modalities via Layer-Adaptive Token Compression for Omnimodal Large Language Models

ICML 2026spotlight

Emerging Omni-modal Large Language Models (OmniLLMs) enable real-time interaction across video, audio, and text but suffer from prohibitive computational costs due to the quadratic complexity of processing continuous streaming inputs. Existing token compression strategies remain suboptimal as they t…

Cited by 0SourceScholar
2025

DLFR-Gen: Diffusion-based Video Generation with Dynamic Latent Frame Rate

ICCV 2025poster

Diffusion Transformer (DiT)-based generation models have achieved remarkable success in video generation. However, their inherent computational demands pose significant efficiency challenges. In this paper, we exploit the inherent temporal non-uniformity of real-world videos, and observe that videos…

Cited by 0SourcePDFScholar
2025

DiTFastAttnV2: Head-wise Attention Compression for Multi-Modality Diffusion Transformers

ICCV 2025poster

Text-to-image generation models, especially Multimodal Diffusion Transformers (MMDiT), have shown remarkable progress in generating high-quality images. However, these models often face significant computational bottlenecks, particularly in attention mechanisms, which hinder their scalability and ef…

2025

EA-Vit: Efficient Adaptation for Elastic Vision Transformer

ICCV 2025poster

Vision Transformers (ViTs) have emerged as a foundational model in computer vision, excelling in generalization and adaptation to downstream tasks. However, deploying ViTs to support diverse resource constraints typically requires retraining multiple, size-specific ViTs, which is both time-consuming…

2025

GSQ-Tuning: Group-Shared Exponents Integer in Fully Quantized Training for LLMs On-Device Fine-tuning

ACL 2025finding

Large Language Models (LLMs) fine-tuning technologies have achieved remarkable results. However, traditional LLM fine-tuning approaches face significant challenges: they require large Floating Point(FP) computation, raising privacy concerns when handling sensitive data, and are impractical for resou…

2025

MambaQuant: Quantizing the Mamba Family with Variance Aligned Rotation Methods

ICLR 2025poster

Mamba is an efficient sequence model that rivals Transformers and demonstrates significant potential as a foundational architecture for various tasks. Quantization is commonly used in neural networks to reduce model size and computational latency. However, applying quantization to Mamba remains unde…

Cited by 3SourcePDFScholar
2025

MoEQuant: Enhancing Quantization for Mixture-of-Experts Large Language Models via Expert-Balanced Sampling and Affinity Guidance

ICML 2025poster

Mixture-of-Experts (MoE) large language models (LLMs), which leverage dynamic routing and sparse activation to enhance efficiency and scalability, have achieved higher performance while reducing computational costs. However, these models face significant memory overheads, limiting their practical de…

Cited by 0SourcePDFScholar
2025

MxMoE: Mixed-precision Quantization for MoE with Accuracy and Performance Co-Design

ICML 2025poster

Mixture-of-Experts (MoE) models face deployment challenges due to their large parameter counts and computational demands. We explore quantization for MoE models and highlight two key insights: 1) linear blocks exhibit varying quantization sensitivity, and 2) divergent expert activation frequencies c…

2025

OSTQuant: Refining Large Language Model Quantization with Orthogonal and Scaling Transformations for Better Distribution Fitting

ICLR 2025poster

Post-training quantization (PTQ) has emerged as a widely adopted technique for compressing and accelerating Large Language Models (LLMs). The major challenge in LLM quantization is that uneven and heavy-tailed data distributions can expand the quantization range, thereby reducing bit precision for m…

2025

PillarHist: A Quantization-aware Pillar Feature Encoder based on Height-aware Histogram

CVPR 2025poster

Real-time and high-performance 3D object detection plays a critical role in autonomous driving and robotics. Recent pillar-based 3D object detectors have gained significant attention due to their compact representation and low computational overhead, making them suitable for onboard deployment and q…

2025

QuEST: Low-bit Diffusion Model Quantization via Efficient Selective Finetuning

ICCV 2025poster

The practical deployment of diffusion models is still hindered by the high memory and computational overhead. Although quantization paves a way for model compression and acceleration, existing methods face challenges in achieving low-bit quantization efficiently. In this paper, we identify imbalance…

2025

R2R: Efficiently Navigating Divergent Reasoning Paths with Small-Large Model Token Routing

NeurIPS 2025poster

Large Language Models (LLMs) achieve impressive reasoning capabilities at the cost of substantial inference overhead, posing substantial deployment challenges. Although distilled Small Language Models (SLMs) significantly enhance efficiency, their performance suffers as they fail to follow LLMs' rea…

Cited by 0SourcecodeScholar
2025

RWKVQuant: Quantizing the RWKV Family with Proxy Guided Hybrid of Scalar and Vector Quantization

ICML 2025poster

RWKV is a modern RNN architecture with comparable performance to Transformer, but still faces challenges when deployed to resource-constrained devices. Post Training Quantization (PTQ), which is a an essential technique to reduce model size and inference latency, has been widely used in Transformer…

Cited by 0SourcePDFScholar
2025

SAFEx: Analyzing Vulnerabilities of MoE-Based LLMs via Stable Safety-critical Expert Identification

NeurIPS 2025poster

Large language models with Mixture-of-Experts (MoE) architectures achieve efficiency and scalability, yet their routing mechanisms introduce safety alignment challenges insufficiently addressed by techniques developed for dense models. In this work, the MoE-specific safety risk of positional vulnera…

Cited by 0SourceScholar
2025

Spec-VLA: Speculative Decoding for Vision-Language-Action Models with Relaxed Acceptance

EMNLP 2025

Vision-Language-Action (VLA) models have made substantial progress by leveraging the robust capabilities of Visual Language Models (VLMs). However, VLMs’ significant parameter size and autoregressive (AR) decoding nature impose considerable computational demands on VLA models. While Speculative Deco

2024

DiTFastAttn: Attention Compression for Diffusion Transformer Models

NeurIPS 2024poster

Diffusion Transformers (DiT) excel at image and video generation but face computational challenges due to the quadratic complexity of self-attention operators. We propose DiTFastAttn, a post-training compression method to alleviate the computational bottleneck of DiT. We identify three key redundanc…

Cited by 19SourcePDFScholar
2024

Learning High-Frequency Functions Made Easy with Sinusoidal Positional Encoding

ICML 2024poster

Fourier features based positional encoding (PE) is commonly used in machine learning tasks that involve learning high-frequency features from low-dimensional inputs, such as 3D view synthesis and time series regression with neural tangent kernels. Despite their effectiveness, existing PEs require ma…

2023

PD-Quant: Post-Training Quantization Based on Prediction Difference Metric

CVPR 2023poster

Post-training quantization (PTQ) is a neural network compression technique that converts a full-precision model into a quantized model using lower-precision data types. Although it can help reduce the size and computational cost of deep neural networks, it can also introduce quantization noise and r…

2023

Post-Training Quantization on Diffusion Models

CVPR 2023poster

Denoising diffusion (score-based) generative models have recently achieved significant accomplishments in generating realistic and diverse data. These approaches define a forward diffusion process for transforming data into noise and a backward denoising process for sampling data from noise. Unfortu…

2022

Latency-aware Spatial-wise Dynamic Networks

NeurIPS 2022accept

Spatial-wise dynamic convolution has become a promising approach to improving the inference efficiency of deep networks. By allocating more computation to the most informative pixels, such an adaptive inference paradigm reduces the spatial redundancy in image features and saves a considerable amount…

2022

PTQ4ViT: Post-Training Quantization for Vision Transformers with Twin Uniform Quantization

ECCV 2022poster

"Quantization is one of the most effective methods to compress neural networks, which has achieved great success on convolutional neural networks (CNNs). Recently, vision transformers have demonstrated great potential in computer vision. However, previous post-training quantization methods performed…

2020

S2DNAS: Transforming Static CNN Model for Dynamic Inference via Neural Architecture Search

ECCV 2020poster

Recently, dynamic inference has emerged as a promising way to reduce the computational cost of deep convolutional neural networks (CNNs). In contrast to static methods (e.g., weight pruning), dynamic inference adaptively adjusts the inference process according to each input sample, which can conside…

Cited by 46SourcePDFScholar