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Speculative decoding (SPD) accelerates large language model (LLM) inference by letting a smaller draft model propose multiple future tokens that are verified in parallel by a larger target model. The dominant SPD paradigm treats the target…

Computation and Language · Computer Science 2026-05-26 Jinze Li , Yixing Xu , Guanchen Li , Jinfeng Xu , Shuo Yang , Yang Zhang , Xuanwu Yin , Dong Li , Edith C. H. Ngai , Emad Barsoum

Large language model (LLM)-based automatic speech recognition (ASR) has recently attracted a lot of attention due to its high recognition accuracy and enhanced multi-dialect support. However, the high decoding latency of LLMs challenges the…

Audio and Speech Processing · Electrical Eng. & Systems 2025-07-29 Linye Wei , Shuzhang Zhong , Songqiang Xu , Runsheng Wang , Ru Huang , Meng Li

Volumetric medical image segmentation presents unique challenges due to the inherent anatomical structure and limited availability of annotations. While recent methods have shown promise by contrasting spatial relationships between slices,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Haoyi Wang

Process Reward Models (PRMs) play a central role in evaluating and guiding multi-step reasoning in large language models (LLMs), especially for mathematical problem solving. However, we identify a pervasive length bias in existing PRMs:…

Computation and Language · Computer Science 2026-05-20 Congmin Zheng , Jiachen Zhu , Jianghao Lin , Xinyi Dai , Weiwen Liu , Haoxuan Li , Yong Yu , Weinan Zhang , Mengyue Yang

Speculative decoding (SD) accelerates LLM inference by verifying draft tokens in parallel. However, this method presents a critical trade-off: it improves throughput in low-load, memory-bound systems but degrades performance in high-load,…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-03-04 Rui Li , Zhaoning Zhang , Libo Zhang , Huaimin Wang , Xiang Fu , Zhiquan Lai

Speculative decoding accelerates LLM inference by using a draft model to look ahead, but gains are capped by the cost of autoregressive draft generation: increasing draft size elevates acceptance rates but introduces additional latency…

Computation and Language · Computer Science 2025-12-15 Nikhil Bhendawade , Kumari Nishu , Arnav Kundu , Chris Bartels , Minsik Cho , Irina Belousova

The synergistic mechanism based on Speculative Decoding (SD) has garnered considerable attention as a simple yet effective approach for accelerating the inference of large language models (LLMs). Nonetheless, the high rejection rates…

Computation and Language · Computer Science 2025-06-04 Chuanghao Ding , Jiaping Wang , Ziqing Yang , Xiaoliang Wang , Dahua Lin , Cam-Tu Nguyen , Fei Tan

Large language models (LLMs) have achieved impressive results on multi-step mathematical reasoning, yet at the cost of high computational overhead. This challenge is particularly acute for test-time scaling methods such as parallel…

Machine Learning · Computer Science 2026-03-24 Yuanlin Chu , Bo Wang , Xiang Liu , Hong Chen , Aiwei Liu , Xuming Hu

Speculative decoding is commonly used for reducing the inference latency of large language models. Its effectiveness depends highly on the speculation lookahead (SL)-the number of tokens generated by the draft model at each iteration. In…

Computation and Language · Computer Science 2024-11-08 Jonathan Mamou , Oren Pereg , Daniel Korat , Moshe Berchansky , Nadav Timor , Moshe Wasserblat , Roy Schwartz

Speculative sampling is a promising approach to accelerate the decoding stage for Large Language Models (LLMs). Recent advancements that leverage target LLM's contextual information, such as hidden states and KV cache, have shown…

Machine Learning · Computer Science 2025-02-27 Lefan Zhang , Xiaodan Wang , Yanhua Huang , Ruiwen Xu

Speculative decoding accelerates Large Language Models (LLMs) inference by using a lightweight draft model to propose candidate tokens that are verified in parallel by the target model. However, existing draft model training objectives are…

Computation and Language · Computer Science 2026-05-12 Zihao An , Taichi Liu , Ziqiong Liu , Dong Li , Ruofeng Liu , Emad Barsoum

Speculative decoding is a powerful technique that attempts to circumvent the autoregressive constraint of modern Large Language Models (LLMs). The aim of speculative decoding techniques is to improve the average inference time of a large,…

Computation and Language · Computer Science 2024-10-25 Sudhanshu Agrawal , Wonseok Jeon , Mingu Lee

While speculative decoding has recently appeared as a promising direction for accelerating the inference of large language models (LLMs), the speedup and scalability are strongly bounded by the token acceptance rate. Prevalent methods…

Machine Learning · Computer Science 2024-10-16 Yunfan Xiong , Ruoyu Zhang , Yanzeng Li , Tianhao Wu , Lei Zou

Speculative Decoding (SD) is a technique to accelerate the inference of Large Language Models (LLMs) by using a lower complexity draft model to propose candidate tokens verified by a larger target model. To further improve efficiency,…

Computation and Language · Computer Science 2024-12-17 Xiaofan Lu , Yixiao Zeng , Feiyang Ma , Zixu Yu , Marco Levorato

Training Large Reasoning Model (LRM) is usually unstable and unpredictable, especially on hard problems or weak foundation models. We found that the current post-training scaling strategy can still improve on these cases. We propose…

Machine Learning · Computer Science 2026-01-22 Yutong Chen , Jiandong Gao , Ji Wu

In language reasoning, longer chains of thought consistently yield better performance, which naturally suggests that visual latent reasoning may likewise benefit from longer latent sequences. However, we discover a counterintuitive…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Chenfeng Wang , Wei He , Xuhan Zhu , Chunpeng Zhou , Qizhen Li , Song Yan , Yufei Zheng , Chengjun Yu , Fan Lu , Wei Zhai , Yang Cao , Pengfei Yu , Zheng-Jun Zha

Vision-Language Models (VLMs) enable powerful multimodal reasoning but suffer from slow autoregressive inference, limiting their deployment in real-time applications. We introduce Spec-LLaVA, a system that applies speculative decoding to…

Computation and Language · Computer Science 2025-09-16 Mingxiao Huo , Jiayi Zhang , Hewei Wang , Jinfeng Xu , Zheyu Chen , Huilin Tai , Yijun Chen

Large language models achieve impressive performance across diverse tasks but exhibit high inference latency due to their large parameter sizes. While quantization reduces model size, it often leads to performance degradation compared to…

Hardware Architecture · Computer Science 2025-10-22 Yushu Zhao , Yubin Qin , Yang Wang , Xiaolong Yang , Huiming Han , Shaojun Wei , Yang Hu , Shouyi Yin

Autoregressive decoding inherently limits the inference throughput of Large Language Model (LLM) due to its sequential dependency. Speculative decoding mitigates this by verifying multiple predicted tokens in parallel, but its efficiency…

Computation and Language · Computer Science 2025-10-27 Siran Liu , Yang Ye , Qianchao Zhu , Zane Cao , Yongchao He

Accelerating inference in Large Language Models (LLMs) is critical for real-time interactions, as they have been widely incorporated into real-world services. Speculative decoding, a fully algorithmic solution, has gained attention for…

Computation and Language · Computer Science 2025-02-11 Sukmin Cho , Sangjin Choi , Taeho Hwang , Jeongyeon Seo , Soyeong Jeong , Huije Lee , Hoyun Song , Jong C. Park , Youngjin Kwon