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Pseudo-relevance feedback mechanisms, from Rocchio to the relevance models, have shown the usefulness of expanding and reweighting the users' initial queries using information occurring in an initial set of retrieved documents, known as the…

Information Retrieval · Computer Science 2021-07-02 Xiao Wang , Craig Macdonald , Nicola Tonellotto , Iadh Ounis

In autoregressive language models, each token is sampled by conditioning on all the past tokens; the overall string has thus been sampled from the correct underlying joint distribution represented by the model. In contrast, masked diffusion…

Computation and Language · Computer Science 2026-02-03 Parikshit Bansal , Sujay Sanghavi

While recent multimodal large language models (MLLMs) have made impressive strides, they predominantly employ a conventional autoregressive architecture as their backbone, leaving significant room to explore effective and efficient…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Lijiang Li , Zuwei Long , Yunhang Shen , Heting Gao , Haoyu Cao , Xing Sun , Caifeng Shan , Ran He , Chaoyou Fu

Diffusion Language Models (DLMs) have emerged as a promising new paradigm for text generative modeling, potentially addressing limitations of autoregressive (AR) models. However, current DLMs have been studied at a smaller scale compared to…

Computation and Language · Computer Science 2025-06-03 Shansan Gong , Shivam Agarwal , Yizhe Zhang , Jiacheng Ye , Lin Zheng , Mukai Li , Chenxin An , Peilin Zhao , Wei Bi , Jiawei Han , Hao Peng , Lingpeng Kong

Inference-time compute has re-emerged as a practical way to improve LLM reasoning. Most test-time scaling (TTS) algorithms rely on autoregressive decoding, which is ill-suited to discrete diffusion language models (dLLMs) due to their…

Machine Learning · Computer Science 2026-05-06 Jinbin Bai , Yixuan Li , Yuchen Zhu , Yi Xin , Qingyu Shi , Aosong Feng , Xiaohong Liu , Molei Tao , Jianru Xue , Xiangtai Li , Ming-Hsuan Yang

Despite remarkable progress in autoregressive language models, alternative generative paradigms beyond left-to-right generation are still being actively explored. Discrete diffusion models, with the capacity for parallel generation, have…

Computation and Language · Computer Science 2025-03-10 Minkai Xu , Tomas Geffner , Karsten Kreis , Weili Nie , Yilun Xu , Jure Leskovec , Stefano Ermon , Arash Vahdat

Vision-and-Language Navigation (VLN) requires an agent to follow natural-language instructions and navigate through previously unseen environments. Recent approaches increasingly employ large language models (LLMs) as high-level navigators…

Computer Vision and Pattern Recognition · Computer Science 2026-02-18 Shutian Gu , Chengkai Huang , Ruoyu Wang , Lina Yao

We introduce Diffusion Parametric Head Models (DPHMs), a generative model that enables robust volumetric head reconstruction and tracking from monocular depth sequences. While recent volumetric head models, such as NPHMs, can now excel in…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Jiapeng Tang , Angela Dai , Yinyu Nie , Lev Markhasin , Justus Thies , Matthias Niessner

Information retrieval methods often rely on a single embedding model trained on large, general-domain datasets like MSMARCO. While this approach can produce a retriever with reasonable overall performance, they often underperform models…

Information Retrieval · Computer Science 2025-02-27 Hyunji Lee , Luca Soldaini , Arman Cohan , Minjoon Seo , Kyle Lo

Part of the success of diffusion models stems from their ability to perform iterative refinement, i.e., repeatedly correcting outputs during generation. However, modern masked discrete diffusion lacks this capability: when a token is…

Machine Learning · Computer Science 2026-02-10 Guanghan Wang , Yair Schiff , Subham Sekhar Sahoo , Volodymyr Kuleshov

Discrete diffusion language models improve generation efficiency through parallel token prediction, but standard $X_0$ prediction methods introduce factorization errors by approximating the clean token posterior with independent token-wise…

Computation and Language · Computer Science 2026-05-15 Xun Fang , Yunchen Li , Hang Yuan , Zhou Yu

Recent dense retrievers increasingly leverage the robust text understanding capabilities of Large Language Models (LLMs), encoding queries and documents into a shared embedding space for effective retrieval. However, most existing methods…

Information Retrieval · Computer Science 2025-10-07 Yifan Ji , Zhipeng Xu , Zhenghao Liu , Yukun Yan , Shi Yu , Yishan Li , Zhiyuan Liu , Yu Gu , Ge Yu , Maosong Sun

Disfluency detection has mainly been solved in a pipeline approach, as post-processing of speech recognition. In this study, we propose Transformer-based encoder-decoder models that jointly solve speech recognition and disfluency detection,…

Computation and Language · Computer Science 2023-05-12 Hayato Futami , Emiru Tsunoo , Kentaro Shibata , Yosuke Kashiwagi , Takao Okuda , Siddhant Arora , Shinji Watanabe

Diffusion language models (DLMs) have shown strong potential for general natural language tasks with in-context examples. However, due to the bidirectional attention mechanism, DLMs incur substantial computational cost as context length…

Computation and Language · Computer Science 2026-01-07 Yang Li , Han Meng , Chenan Wang , Haipeng Chen

Due to the high complexity and technical requirements of industrial production processes, surface defects will inevitably appear, which seriously affects the quality of products. Although existing lightweight detection networks are highly…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Xuyi Yu

Discrete diffusion models have recently become competitive with autoregressive models for language modeling, even outperforming them on reasoning tasks requiring planning and global coherence, but they require more computation at inference…

Machine Learning · Computer Science 2026-02-04 Andre He , Sean Welleck , Daniel Fried

Diffusion language models (DLMs) enable parallel, non-autoregressive text generation, yet existing DLM mixture-of-experts (MoE) models inherit token-choice (TC) routing from autoregressive systems, leading to load imbalance and rigid…

Numerous retrieval models, including sparse, dense and llm-based methods, have demonstrated remarkable performance in predicting the relevance between queries and corpora. However, the preliminary effectiveness analysis experiments indicate…

Information Retrieval · Computer Science 2024-12-17 Tian-Yi Che , Xian-Ling Mao , Chun Xu , Cheng-Xin Xin , Heng-Da Xu , Jin-Yu Liu , Heyan Huang

Masked diffusion models (MDMs) have emerged as a promising approach for language modeling, yet they face a performance gap compared to autoregressive models (ARMs) and require more training iterations. In this work, we present the…

Machine Learning · Computer Science 2026-01-26 Mahdi Karami , Ali Ghodsi

Existing Visual Speech Recognition (VSR) systems commonly rely on left-to-right autoregressive decoding, which can force premature decisions on visually ambiguous tokens before sufficient context is available. We propose DLLM-VSR, to the…

Artificial Intelligence · Computer Science 2026-05-28 Jeong Hun Yeo , Chae Won Kim , Hyeongseop Rha , Yong Man Ro