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Adapting Large Language Models (LLMs) to a continuous stream of tasks is a critical yet challenging endeavor. While Parameter-Efficient Fine-Tuning (PEFT) methods have become a standard for this, they face a fundamental dilemma in continual…

Machine Learning · Computer Science 2025-11-11 Haeyong Kang

Sparsely gated Mixture of Experts (MoE) models have been shown to be a compute-efficient method to scale model capacity for multilingual machine translation. However, for low-resource tasks, MoE models severely over-fit. We show effective…

Computation and Language · Computer Science 2022-12-19 Maha Elbayad , Anna Sun , Shruti Bhosale

Transformer-based text embedding models have improved their performance on benchmarks like MIRACL and BEIR by increasing their parameter counts. However, this scaling approach introduces significant deployment challenges, including…

Computation and Language · Computer Science 2025-03-11 Zach Nussbaum , Brandon Duderstadt

The advancement of deep learning has led to the emergence of Mixture-of-Experts (MoEs) models, known for their dynamic allocation of computational resources based on input. Despite their promise, MoEs face challenges, particularly in terms…

Computation and Language · Computer Science 2024-04-09 Alexandre Muzio , Alex Sun , Churan He

We introduce Mixtral 8x7B, a Sparse Mixture of Experts (SMoE) language model. Mixtral has the same architecture as Mistral 7B, with the difference that each layer is composed of 8 feedforward blocks (i.e. experts). For every token, at each…

The generation quality of large language models (LLMs) is often improved by utilizing inference-time sequence-level scaling methods (e.g., Chain-of-Thought). We introduce hyper-parallel scaling, a complementary framework that improves…

Artificial Intelligence · Computer Science 2025-10-15 Soheil Zibakhsh , Mohammad Samragh , Kumari Nishu , Lauren Hannah , Arnav Kundu , Minsik Cho

Empirical scaling laws have driven the evolution of large language models (LLMs), yet their coefficients shift whenever the model architecture or data pipeline changes. Mixture-of-Experts (MoE) models, now standard in state-of-the-art…

Machine Learning · Computer Science 2026-03-03 Taishi Nakamura , Satoki Ishikawa , Masaki Kawamura , Takumi Okamoto , Daisuke Nohara , Jun Suzuki , Rio Yokota

The Mixture of Experts (MoE) selects a few feed-forward networks (FFNs) per token, achieving an effective trade-off between computational cost and performance. In conventional MoE, each expert is treated as entirely independent, and experts…

Machine Learning · Computer Science 2026-01-27 Shota Takashiro , Takeshi Kojima , Shohei Taniguchi , Yusuke Iwasawa , Yutaka Matsuo

The Mixture-of-Experts (MoE) architecture enables a significant increase in the total number of model parameters with minimal computational overhead. However, it is not clear what performance tradeoffs, if any, exist between MoEs and…

Sparse Mixture of Experts (SMoEs) models scale the capacity of models while maintaining constant computational overhead. Early designs typically relied on a fixed value of $k$, where $k$ represents either the number of experts selected per…

Computation and Language · Computer Science 2025-10-28 Giang Do , Hung Le , Truyen Tran

Large language models (LLMs) have demonstrated considerable proficiency in general natural language processing (NLP) tasks. Instruction tuning, a successful paradigm, enhances the ability of LLMs to follow natural language instructions and…

Artificial Intelligence · Computer Science 2024-09-25 Haoyuan Wu , Haisheng Zheng , Zhuolun He , Bei Yu

Mixture of Experts (MoE) has become a key architectural paradigm for efficiently scaling Large Language Models (LLMs) by selectively activating a subset of parameters for each input token. However, standard MoE architectures face…

Machine Learning · Computer Science 2025-05-27 Zehua Liu , Han Wu , Ruifeng She , Xiaojin Fu , Xiongwei Han , Tao Zhong , Mingxuan Yuan

To meet the growing demand for smarter, faster, and more efficient embodied AI solutions, we introduce a novel Mixture-of-Expert (MoE) method that significantly boosts reasoning and learning efficiency for embodied autonomous systems.…

Artificial Intelligence · Computer Science 2025-08-14 Lu Xu , Jiaqian Yu , Xiongfeng Peng , Yiwei Chen , Weiming Li , Jaewook Yoo , Sunghyun Chunag , Dongwook Lee , Daehyun Ji , Chao Zhang

Speech emotion recognition (SER) plays a critical role in building emotion-aware speech systems, but its performance degrades significantly under noisy conditions. Although speech enhancement (SE) can improve robustness, it often introduces…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-29 Jing-Tong Tzeng , Carlos Busso , Chi-Chun Lee

Mixture-of-Experts (MoE) architectures expand model capacity by sparsely activating experts but face two core challenges: misalignment between router logits and each expert's internal structure leads to unstable routing and expert…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Anzhe Cheng , Shukai Duan , Shixuan Li , Chenzhong Yin , Mingxi Cheng , Heng Ping , Tamoghna Chattopadhyay , Sophia I Thomopoulos , Shahin Nazarian , Paul Thompson , Paul Bogdan

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

Mixture-of-Experts (MoE) networks have been proposed as an efficient way to scale up model capacity and implement conditional computing. However, the study of MoE components mostly focused on the feedforward layer in Transformer…

Computation and Language · Computer Science 2022-10-12 Xiaofeng Zhang , Yikang Shen , Zeyu Huang , Jie Zhou , Wenge Rong , Zhang Xiong

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

Mixture of Experts (MoE) architectures have recently started burgeoning due to their ability to scale model's capacity while maintaining the computational cost affordable. Furthermore, they can be applied to both Transformers and State…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-05 Umberto Cappellazzo , Daniele Falavigna , Alessio Brutti

Sparse mixture-of-experts (MoE) layers have been shown to substantially increase model capacity without a proportional increase in computational cost and are widely used in transformer architectures, where they typically replace…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Svetlana Pavlitska , Haixi Fan , Konstantin Ditschuneit , J. Marius Zöllner