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Related papers: Steering MoE LLMs via Expert (De)Activation

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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…

Machine Learning · Computer Science 2025-10-14 Zhenglin Lai , Mengyao Liao , Bingzhe Wu , Dong Xu , Zebin Zhao , Zhihang Yuan , Chao Fan , Jianqiang Li

Large language models (LLMs) have garnered unprecedented advancements across diverse fields, ranging from natural language processing to computer vision and beyond. The prowess of LLMs is underpinned by their substantial model size,…

Machine Learning · Computer Science 2025-04-10 Weilin Cai , Juyong Jiang , Fan Wang , Jing Tang , Sunghun Kim , Jiayi Huang

Mixture-of-Experts (MoE) Large Language Models (LLMs) face a trilemma of load imbalance, parameter redundancy, and communication overhead. We introduce a unified framework based on dynamic expert clustering and structured compression to…

Computation and Language · Computer Science 2026-02-06 Peijun Zhu , Ning Yang , Baoliang Tian , Jiayu Wei , Weihao Zhang , Haijun Zhang , Pin Lv

We present Bayesian Mixture of Experts (Bayesian-MoE), a post-hoc uncertainty estimation framework for fine-tuned large language models (LLMs) based on Mixture-of-Experts architectures. Our method applies a structured Laplace approximation…

Machine Learning · Computer Science 2025-11-13 Maryam Dialameh , Hossein Rajabzadeh , Weiwei Zhang , Walid Ahmed , Hyock Ju Kwon

An increasing number of LLMs employ Mixture-of-Experts (MoE) architectures where the feed-forward layer is replaced by a pool of experts and each token only activates a small subset of them. During autoregressive generation, these models…

Machine Learning · Computer Science 2025-11-05 Costin-Andrei Oncescu , Qingyang Wu , Wai Tong Chung , Robert Wu , Bryan Gopal , Junxiong Wang , Tri Dao , Ben Athiwaratkun

Mixture-of-Experts (MoE) architectures have emerged as a powerful paradigm for scaling neural networks while maintaining computational efficiency. However, standard MoE implementations rely on two rigid design assumptions: (1) fixed Top-K…

Machine Learning · Computer Science 2026-03-03 Gökdeniz Gülmez

MoE-PEFT methods combine Mixture of Experts with parameter-efficient fine-tuning for multi-task adaptation, but require separate adapters per expert causing trainable parameters to scale linearly with expert count and limiting applicability…

Machine Learning · Computer Science 2026-04-06 Md Kowsher , Haris Mansoor , Nusrat Jahan Prottasha , Ozlem Garibay , Victor Zhu , Zhengping Ji , Chen Chen

Mixture-of-experts (MoE) architectures used in large language models (LLMs) achieve state-of-the-art performance across diverse tasks yet face practical challenges such as deployment complexity and low activation efficiency. Expert pruning…

Machine Learning · Computer Science 2025-12-23 Xican Yang , Yuanhe Tian , Yan Song

Steering, or direct manipulation of internal activations to guide LLM responses toward specific semantic concepts, is emerging as a promising avenue for both understanding how semantic concepts are stored within LLMs and advancing LLM…

Machine Learning · Computer Science 2026-02-03 Parmida Davarmanesh , Ashia Wilson , Adityanarayanan Radhakrishnan

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

Large Language Models (LLMs) have achieved significant success in various natural language processing tasks, but how wireless communications can support LLMs has not been extensively studied. In this paper, we propose a wireless distributed…

Information Theory · Computer Science 2024-05-07 Nan Xue , Yaping Sun , Zhiyong Chen , Meixia Tao , Xiaodong Xu , Liang Qian , Shuguang Cui , Ping Zhang

Modern LLMs continue to exhibit significant variance in behavior across languages, such as being able to recall factual information in some languages but not others. While typically studied as a problem to be mitigated, in this work, we…

Computation and Language · Computer Science 2026-03-19 Lucas Bandarkar , Alan Ansell , Trevor Cohn

Large Language Models (LLMs) are increasingly deployed in socially sensitive domains, yet their unpredictable behaviors, ranging from misaligned intent to inconsistent personality, pose significant risks. We introduce SteerEval, a…

Computation and Language · Computer Science 2026-04-14 Ziwen Xu , Kewei Xu , Haoming Xu , Haiwen Hong , Longtao Huang , Hui Xue , Ningyu Zhang , Yongliang Shen , Guozhou Zheng , Huajun Chen , Shumin Deng

Mixture-of-Experts (MoE) architectures within Large Reasoning Models (LRMs) have achieved impressive reasoning capabilities by selectively activating experts to facilitate structured cognitive processes. Despite notable advances, existing…

Due to the inherent difficulty in modeling phonetic similarities across different languages, code-switching speech recognition presents a formidable challenge. This study proposes a Collaborative-MoE, a Mixture of Experts (MoE) model that…

Computation and Language · Computer Science 2024-09-06 Hukai Huang , Jiayan Lin , Kaidi Wang , Yishuang Li , Wenhao Guan , Lin Li , Qingyang Hong

Training large language models (LLMs) for different inference constraints is computationally expensive, limiting control over efficiency-accuracy trade-offs. Moreover, once trained, these models typically process tokens uniformly,…

Computation and Language · Computer Science 2025-02-19 Kumari Nishu , Sachin Mehta , Samira Abnar , Mehrdad Farajtabar , Maxwell Horton , Mahyar Najibi , Moin Nabi , Minsik Cho , Devang Naik

Large Language Models (LLMs) have gained immense success in revolutionizing various applications, including content generation, search and recommendation, and AI-assisted operation. To reduce high training costs, Mixture-of-Experts (MoE)…

Machine Learning · Computer Science 2025-10-07 Hanfei Yu , Xingqi Cui , Hong Zhang , Hao Wang , Hao Wang

Empowering Large Multimodal Models (LMMs) with image generation often leads to catastrophic forgetting in understanding tasks due to severe gradient conflicts. While existing paradigms like Mixture-of-Transformers (MoT) mitigate this…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Xiangyue Liu , Zijian Zhang , Miles Yang , Zhao Zhong , Liefeng Bo , Ping Tan

Mixture-of-Experts based large language models (MoE LLMs) have shown significant promise in multitask adaptability by dynamically routing inputs to specialized experts. Despite their success, the collaborative mechanisms among experts are…

Machine Learning · Computer Science 2025-04-18 Yuanbo Tang , Yan Tang , Naifan Zhang , Meixuan Chen , Yang Li

Activation steering methods in large language models (LLMs) have emerged as an effective way to perform targeted updates to enhance generated language without requiring large amounts of adaptation data. We ask whether the features…

Computation and Language · Computer Science 2025-11-05 Masha Fedzechkina , Eleonora Gualdoni , Sinead Williamson , Katherine Metcalf , Skyler Seto , Barry-John Theobald
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