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Sparse autoencoders (SAEs) have emerged as a powerful tool for interpreting large language models (LLMs) by decomposing token activations into combinations of human-understandable features. While SAEs provide crucial insights into LLM…

Machine Learning · Computer Science 2025-11-11 Zhen Xu , Zhen Tan , Song Wang , Kaidi Xu , Tianlong Chen

Mixture of Experts (MoE) models have achieved great success by significantly improving performance while maintaining computational efficiency through sparse expert activation. However, their enormous parameter sizes and memory demands pose…

Machine Learning · Computer Science 2026-02-25 Zukang Xu , Zhixiong Zhao , Xing Hu , Zhixuan Chen , Dawei Yang

Multimodal large language models (MLLMs) have garnered widespread attention from researchers due to their remarkable understanding and generation capabilities in visual language tasks (e.g., visual question answering). However, the rapid…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Tianyu Huai , Jie Zhou , Xingjiao Wu , Qin Chen , Qingchun Bai , Ze Zhou , Liang He

By increasing model parameters but activating them sparsely when performing a task, the use of Mixture-of-Experts (MoE) architecture significantly improves the performance of Large Language Models (LLMs) without increasing the inference…

Computation and Language · Computer Science 2025-06-10 Zeliang Zhang , Xiaodong Liu , Hao Cheng , Chenliang Xu , Jianfeng Gao

Vision-Language Models (VLMs) in visual question answering (VQA) offer a unique opportunity to enhance intra-operative decision-making, promote intuitive interactions, and significantly advancing surgical education. However, the development…

Computer Vision and Pattern Recognition · Computer Science 2025-02-21 Runlong He , Danyal Z. Khan , Evangelos B. Mazomenos , Hani J. Marcus , Danail Stoyanov , Matthew J. Clarkson , Mobarakol Islam

Scaling Mixture-of-Experts (MoE) training introduces systems challenges absent in dense models. Because each token activates only a subset of experts, this sparsity allows total parameters to grow much faster than per-token computation,…

Sparse Mixture-of-Experts (MoE) architectures route each token through a subset of experts at each layer independently. We propose viewing MoE computation through the lens of \emph{expert paths} -- the sequence of expert selections a token…

Machine Learning · Computer Science 2026-04-07 Zijin Gu , Tatiana Likhomanenko , Vimal Thilak , Jason Ramapuram , Navdeep Jaitly

Mixture-of-Experts (MoE) networks promise favorable accuracy-compute trade-offs, yet practical vision deployments are hindered by expert collapse and limited end-to-end efficiency gains. We study when sparse top-$k$ routing with hard…

Computer Vision and Pattern Recognition · Computer Science 2026-05-18 Libo Sun , Po-wei Harn , Peixiong He , Xiao Qin

Large vision-language models struggle with medical video understanding, where spatial precision, temporal reasoning, and clinical semantics are critical. To address this, we first introduce \textbf{MedVidBench}, a large-scale benchmark of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-09 Yuhao Su , Anwesa Choudhuri , Zhongpai Gao , Benjamin Planche , Van Nguyen Nguyen , Meng Zheng , Yuhan Shen , Arun Innanje , Terrence Chen , Ehsan Elhamifar , Ziyan Wu

In response to the challenges posed by the extensive parameter updates required for full fine-tuning of large-scale pre-trained models, parameter-efficient fine-tuning (PEFT) methods, exemplified by Low-Rank Adaptation (LoRA), have emerged.…

Computer Vision and Pattern Recognition · Computer Science 2024-10-11 Junjie Wang , Guangjing Yang , Wentao Chen , Huahui Yi , Xiaohu Wu , Zhouchen Lin , Qicheng Lao

Sparse Mixture-of-Experts (MoE) models scale Transformers efficiently but suffer from expert overlap -- redundant representations across experts and routing ambiguity, resulting in severely underutilized model capacity. While architectural…

Machine Learning · Computer Science 2026-02-17 Rizhen Hu , Yuan Cao , Boao Kong , Mou Sun , Kun Yuan

Sparsely activated Mixture-of-Experts (MoE) models are widely adopted to scale up model capacity without increasing the computation budget. However, vanilla TopK routers are trained in a discontinuous, non-differentiable way, limiting their…

Machine Learning · Computer Science 2025-02-28 Ziteng Wang , Jun Zhu , Jianfei Chen

Decentralized federated learning (DFL) based on low-rank adaptation (LoRA) enables mobile devices with multi-task datasets to collaboratively fine-tune a large language model (LLM) by exchanging locally updated parameters with a subset of…

Machine Learning · Computer Science 2026-02-25 Nuocheng Yang , Sihua Wang , Ouwen Huan , Mingzhe Chen , Tony Q. S. Quek , Changchuan Yin

The Mixture-of-Experts (MoE) architecture is a powerful technique for scaling language models, yet it often suffers from expert homogenization, where experts learn redundant functionalities, thereby limiting MoE's full potential. To address…

Machine Learning · Computer Science 2026-03-03 Jiaang Li , Haibin Chen , Langming Liu , Yujin Yuan , Yadao Wang , Yizhen Zhang , Chengting Yu , Xin Tong , Weidong Zhang , Shilei Liu , Wenbo Su , Bo Zheng

While Mixture-of-Experts (MoE) scales model capacity without proportionally increasing computation, its massive total parameter footprint creates significant storage and memory-access bottlenecks, which hinder efficient end-side deployment…

Machine Learning · Computer Science 2026-05-21 Chenyang Song , Weilin Zhao , Xu Han , Chaojun Xiao , Yingfa Chen , Zhiyuan Liu

Automating medical reports for retinal images requires a sophisticated blend of visual pattern recognition and deep clinical knowledge. Current Large Vision-Language Models (LVLMs) often struggle in specialized medical fields where data is…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Nagur Shareef Shaik , Teja Krishna Cherukuri , Dong Hye Ye

Post-Training Quantization (PTQ) has emerged as an effective technique for alleviating the substantial computational and memory overheads of Vision-Language Models (VLMs) by compressing both weights and activations without retraining the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Chenwei Jia , Baoting Li , Xuchong Zhang , Mingzhuo Wei , Bochen Lin , Hongbin Sun

Bridging clinical diagnostic reasoning with AI remains a central challenge in medical imaging. We introduce MedCLM, an automated pipeline that converts detection datasets into large-scale medical visual question answering (VQA) data with…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Soo Yong Kim , Suin Cho , Vincent-Daniel Yun , Gyeongyeon Hwang

The Sparse Mixture of Experts (SMoE) has been widely employed to enhance the efficiency of training and inference for Transformer-based foundational models, yielding promising results.However, the performance of SMoE heavily depends on the…

Machine Learning · Computer Science 2025-03-11 Yongxin Guo , Zhenglin Cheng , Xiaoying Tang , Zhaopeng Tu , Tao Lin

Mixture-of-Experts (MoE) architectures achieve scalable learning by routing inputs to specialized subnetworks through conditional computation. However, conventional MoE designs assume homogeneous expert capability and domain-agnostic…