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Related papers: SAFEx: Analyzing Vulnerabilities of MoE-Based LLMs…

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The rapid adoption of Mixture-of-Experts (MoE) architectures marks a major shift in the deployment of Large Language Models (LLMs). MoE LLMs improve scaling efficiency by activating only a small subset of parameters per token, but their…

Cryptography and Security · Computer Science 2026-02-10 Jona te Lintelo , Lichao Wu , Stjepan Picek

Safety alignment is critical for the responsible deployment of large language models (LLMs). As Mixture-of-Experts (MoE) architectures are increasingly adopted to scale model capacity, understanding their safety robustness becomes…

Machine Learning · Computer Science 2026-05-06 Zhiyuan Xu , Joseph Gardiner , Sana Belguith , Lichao Wu

Recent large language models (LLMs) have increasingly adopted the Mixture-of-Experts (MoE) architecture for efficiency. MoE-based LLMs heavily depend on a superficial safety mechanism in which harmful inputs are routed safety-critical…

Cryptography and Security · Computer Science 2025-10-10 Jaehan Kim , Minkyoo Song , Seungwon Shin , Sooel Son

Mixture-of-Experts (MoE) LLMs rely on sparse, router-driven expert activation, yet how safety alignment interacts with routed expert specialization remains underexplored. A common intuition is that safety behavior may be controlled by…

Computation and Language · Computer Science 2026-05-29 Zhibo Zhang , Yuxi Li , Zhen Ouyang , Ling Shi , Kailong Wang

Mixture-of-Experts (MoE) in Large Language Models (LLMs) routes each token through a subset of specialized Feed-Forward Networks (FFN), known as experts. We present SteerMoE, a framework to steer MoE models by detecting and controlling…

Computation and Language · Computer Science 2026-02-13 Mohsen Fayyaz , Ali Modarressi , Hanieh Deilamsalehy , Franck Dernoncourt , Ryan Rossi , Trung Bui , Hinrich Schütze , Nanyun Peng

Federated instruction tuning of large language models (LLMs) is challenged by significant data heterogeneity across clients, demanding robust personalization. The Mixture of Experts (MoE) architecture, where experts can specialize in…

Artificial Intelligence · Computer Science 2025-10-08 Fan Liu , Bikang Pan , Zhongyi Wang , Xi Yao , Xiaoying Tang , Jingya Wang , Ye Shi

Mixture of experts (MoE) has recently emerged as an effective framework to advance the efficiency and scalability of machine learning models by softly dividing complex tasks among multiple specialized sub-models termed experts. Central to…

Machine Learning · Statistics 2025-03-06 Huy Nguyen , Nhat Ho , Alessandro Rinaldo

Mixture-of-Experts (MoE) architectures have advanced the scaling of Large Language Models (LLMs) by activating only a sparse subset of parameters per input, enabling state-of-the-art performance with reduced computational cost. As these…

Cryptography and Security · Computer Science 2025-12-29 Lichao Wu , Sasha Behrouzi , Mohamadreza Rostami , Stjepan Picek , Ahmad-Reza Sadeghi

Mixture-of-Experts (MoE) architectures in Large Language Models (LLMs) have significantly reduced inference costs through sparse activation. However, this sparse activation paradigm also introduces new safety challenges. Since only a subset…

Cryptography and Security · Computer Science 2026-05-01 Jona te Lintelo , Lichao Wu , Marina Krček , Sengim Karayalçin , Stjepan Picek

Large Language Models (LLMs) are increasingly used for decision making in embodied agents, yet existing safety evaluations often rely on coarse success rates and domain-specific setups, making it difficult to diagnose why and where these…

Artificial Intelligence · Computer Science 2025-05-27 Yejin Son , Minseo Kim , Sungwoong Kim , Seungju Han , Jian Kim , Dongju Jang , Youngjae Yu , Chanyoung Park

While federated learning (FL) enables fine-tuning of large language models (LLMs) without compromising data privacy, the substantial size of an LLM renders on-device training impractical for resource-constrained clients, such as mobile…

Machine Learning · Computer Science 2026-01-05 Zihan Fang , Zheng Lin , Senkang Hu , Yanan Ma , Yihang Tao , Yiqin Deng , Xianhao Chen , Yuguang Fang

Mixture-of-Experts (MoE) language models introduce unique challenges for safety alignment due to their sparse routing mechanisms, which can enable degenerate optimization behaviors under standard full-parameter fine-tuning. In our…

Machine Learning · Computer Science 2026-04-07 Jiacheng Liang , Yuhui Wang , Tanqiu Jiang , Ting Wang

Mixture-of-Experts (MoE) has gained increasing popularity as a promising framework for scaling up large language models (LLMs). However, the reliability assessment of MoE lags behind its surging applications. Moreover, when transferred to…

Machine Learning · Computer Science 2024-06-18 Guanjie Chen , Xinyu Zhao , Tianlong Chen , Yu Cheng

Mixture-of-Experts (MoE) architectures have emerged as a leading paradigm for scaling large language models through sparse, routing-based computation. However, this design introduces a new attack surface: the routing mechanism that…

Cryptography and Security · Computer Science 2026-05-07 Zekun Fei , Zihao Wang , Weijie Liu , Ruiqi He , Jianing Geng , Zheli Liu , XiaoFeng Wang

Large language models (LLMs) encounter significant adaptation challenges in diverse multitask finetuning. Mixture-of-experts (MoE) provides a promising solution with a dynamic architecture, enabling effective task decoupling. However,…

Machine Learning · Computer Science 2025-05-28 Rongyu Zhang , Yijiang Liu , Huanrui Yang , Shenli Zheng , Dan Wang , Yuan Du , Li Du , Shanghang Zhang

Large-scale Mixture of Experts (MoE) Large Language Models (LLMs) have recently become the frontier open-weight models, achieving remarkable model capability similar to proprietary ones. But their random expert selection mechanism…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-05-13 Zhongkai Yu , Yue Guan , Zihao Yu , Chenyang Zhou , Zhengding Hu , Shuyi Pei , Yangwook Kang , Yufei Ding , Po-An Tsai

Mixture-of-Experts (MoE) architectures have become standard in large language models, yet many of their core design choices - expert count, granularity, shared experts, load balancing, token dropping - have only been studied one or two at a…

Machine Learning · Computer Science 2026-05-13 Margaret Li , Sneha Kudugunta , Danielle Rothermel , Luke Zettlemoyer

Large Language Models (LLMs) need to be in accordance with human values-being helpful, harmless, and honest (HHH)-is important for safe deployment. Existing works use Supervised Fine-Tuning (SFT) and Mixture-of-Experts (MoE) to align LLMs.…

Computation and Language · Computer Science 2026-02-10 Gautam Siddharth Kashyap , Mark Dras , Usman Naseem

Mixture-of-Experts (MoE) models are designed to enhance the efficiency of large language models (LLMs) without proportionally increasing the computational demands. However, their deployment on edge devices still faces significant challenges…

Machine Learning · Computer Science 2024-08-21 Shuzhang Zhong , Ling Liang , Yuan Wang , Runsheng Wang , Ru Huang , Meng Li

By introducing routers to selectively activate experts in Transformer layers, the mixture-of-experts (MoE) architecture significantly reduces computational costs in large language models (LLMs) while maintaining competitive performance,…

Machine Learning · Computer Science 2026-02-10 Yukun Jiang , Hai Huang , Mingjie Li , Yage Zhang , Michael Backes , Yang Zhang
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