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Mixture-of-Experts (MoE) models scale capacity by combining specialized experts, but most existing approaches assume centralized access to training data. In practice, data are distributed across clients and cannot be shared due to privacy…

Machine Learning · Computer Science 2026-05-15 Weisen Jiang , Shuhao Chen , Sinno Jialin Pan

Combining existing pre-trained expert LLMs is a promising avenue for scalably tackling large-scale and diverse tasks. However, selecting task-level experts is often too coarse-grained, as heterogeneous tasks may require different expertise…

Computation and Language · Computer Science 2025-07-22 Justin Chih-Yao Chen , Sukwon Yun , Elias Stengel-Eskin , Tianlong Chen , Mohit Bansal

Modern large language models leverage Mixture-of-Experts (MoE) architectures for efficient scaling, but face a critical challenge: functionally similar experts are often selected simultaneously, creating redundant computation and limiting…

Computation and Language · Computer Science 2025-10-16 Chen Zheng , Yuhang Cai , Deyi Liu , Jin Ma , Yiyuan Ma , Yuan Yang , Jing Liu , Yutao Zeng , Xun Zhou , Siyuan Qiao

The Mixture of Experts (MoE) for language models has been proven effective in augmenting the capacity of models by dynamically routing each input token to a specific subset of experts for processing. Despite the success, most existing…

Machine Learning · Computer Science 2024-07-26 Hao Zhao , Zihan Qiu , Huijia Wu , Zili Wang , Zhaofeng He , Jie Fu

Federated domain generalization (FedDG) aims to learn a globally generalizable model from decentralized clients with heterogeneous data while preserving privacy. Recent studies have introduced prompt learning to adapt vision-language models…

Machine Learning · Computer Science 2025-05-01 Shuai Gong , Chaoran Cui , Xiaolin Dong , Xiushan Nie , Lei Zhu , Xiaojun Chang

We propose Tensor-Trained Low-Rank Adaptation Mixture of Experts (TT-LoRA MoE), a novel computational framework integrating Parameter-Efficient Fine-Tuning (PEFT) with sparse MoE routing to address scalability challenges in large model…

Machine Learning · Computer Science 2026-01-27 Pradip Kunwar , Minh N. Vu , Maanak Gupta , Mahmoud Abdelsalam , Manish Bhattarai

The Mixture-of-Experts (MoE) approach has demonstrated outstanding scalability in multi-task learning including low-level upstream tasks such as concurrent removal of multiple adverse weather effects. However, the conventional MoE…

Computer Vision and Pattern Recognition · Computer Science 2023-12-29 Rongyu Zhang , Yulin Luo , Jiaming Liu , Huanrui Yang , Zhen Dong , Denis Gudovskiy , Tomoyuki Okuno , Yohei Nakata , Kurt Keutzer , Yuan Du , Shanghang Zhang

Mixture of Experts (MoE) have shown remarkable success in leveraging specialized expert networks for complex machine learning tasks. However, their susceptibility to adversarial attacks presents a critical challenge for deployment in robust…

Machine Learning · Computer Science 2025-05-28 Xu Zhang , Kaidi Xu , Ziqing Hu , Ren Wang

Mixture-of-Experts (MoE) architectures achieve parameter efficiency through conditional computation, yet contemporary designs suffer from two fundamental limitations: structural parameter isolation that causes catastrophic forgetting, and…

Machine Learning · Computer Science 2026-01-21 Yuxing Gan , Ziyu Lei

In the past year, large (>100B parameter) mixture-of-expert (MoE) models have become increasingly common in the open domain. While their advantages are often framed in terms of efficiency, prior work has also explored functional…

Machine Learning · Computer Science 2025-05-22 Matthew Lyle Olson , Neale Ratzlaff , Musashi Hinck , Man Luo , Sungduk Yu , Chendi Xue , Vasudev Lal

Mixture-of-Experts (MoE) architectures enable conditional computation by activating only a subset of model parameters for each input. Although sparse routing has been highly effective in language models and has also shown promise in vision,…

Machine Learning · Computer Science 2026-04-07 Vadim Vashkelis , Natalia Trukhina

We present a text-reconstruction attack on mixture-of-experts (MoE) language models that recovers tokens from expert selections alone. In MoE models, each token is routed to a subset of expert subnetworks; we show these routing decisions…

Computation and Language · Computer Science 2026-03-16 Amir Nuriyev , Gabriel Kulp

Large Language Models (LLMs) have shown great promise in multilingual machine translation (MT), even with limited bilingual supervision. However, fine-tuning LLMs with parallel corpora presents major challenges, namely parameter…

Computation and Language · Computer Science 2026-05-26 Bo Li , Tianyu Dong , Shaolin Zhu , Deyi Xiong

Resource-efficient machine learning increasingly uses sparse Mixture-of-Experts (MoE) architectures, where the gate acts as both a learning component and a routing interface controlling computation, communication, and accuracy. Motivated by…

Machine Learning · Computer Science 2026-05-08 Mohammad Reza Deylam Salehi , Ali Khalesi

Despite their practical success, it remains unclear why Mixture of Experts (MoE) models can outperform dense networks beyond sheer parameter scaling. We study an iso-parameter regime where inputs exhibit latent modular structure but are…

Machine Learning · Computer Science 2026-01-22 Dong Sun , Rahul Nittala , Rebekka Burkholz

Routing networks in sparsely activated mixture-of-experts (MoE) dynamically allocate input tokens to top-k experts through differentiable sparse transformations, enabling scalable model capacity while preserving computational efficiency.…

Machine Learning · Computer Science 2025-08-19 Bowen Dong , Yilong Fan , Yutao Sun , Zhenyu Li , Tengyu Pan , Xun Zhou , Jianyong Wang

The interpretability of Mixture-of-Experts (MoE) models, especially those with heterogeneous designs, remains underexplored. Existing attribution methods for dense models fail to capture dynamic routing-expert interactions in sparse MoE…

Computation and Language · Computer Science 2025-06-12 Junzhuo Li , Bo Wang , Xiuze Zhou , Peijie Jiang , Jia Liu , Xuming Hu

Mixture-of-Experts (MoE) has become a prevalent backbone for large vision-language models (VLMs), yet how modality-specific signals should guide expert routing remains under-explored. Existing routing strategies are either hand-crafted or…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Zi-Hao Bo , Yaqian Li , Anzhou Hou , Rinyoichi Takezoe , Ertao Zhao , Tianxiang Pan , Jiale Yan , Mo Guang , Kaiwen Long

Recent advancements in LLMs unlearning have shown remarkable success in removing unwanted data-model influences while preserving the model's utility for legitimate knowledge. Despite these strides, sparse Mixture-of-Experts (MoE) LLMs--a…

Machine Learning · Computer Science 2025-07-01 Haomin Zhuang , Yihua Zhang , Kehan Guo , Jinghan Jia , Gaowen Liu , Sijia Liu , Xiangliang Zhang

Mixtures of Experts (MoEs) have gained prominence in (self-)supervised learning due to their enhanced inference efficiency, adaptability to distributed training, and modularity. Previous research has illustrated that MoEs can significantly…

Machine Learning · Computer Science 2024-06-27 Timon Willi , Johan Obando-Ceron , Jakob Foerster , Karolina Dziugaite , Pablo Samuel Castro