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Adaptive gradient algorithms such as ADAGRAD and its variants have gained popularity in the training of deep neural networks. While many works as for adaptive methods have focused on the static regret as a performance metric to achieve a…

机器学习 · 计算机科学 2022-09-07 Parvin Nazari , Esmaile Khorram

Current image captioning works usually focus on generating descriptions in an autoregressive manner. However, there are limited works that focus on generating descriptions non-autoregressively, which brings more decoding diversity. Inspired…

计算机视觉与模式识别 · 计算机科学 2023-05-23 Yufeng He , Zefan Cai , Xu Gan , Baobao Chang

While autoregressive models excel at image compression, their sample quality is often lacking. Although not realistic, generated images often have high likelihood according to the model, resembling the case of adversarial examples. Inspired…

机器学习 · 计算机科学 2021-03-30 Chenlin Meng , Jiaming Song , Yang Song , Shengjia Zhao , Stefano Ermon

Diffusion and flow matching models generate high-fidelity data by simulating paths defined by Ordinary or Stochastic Differential Equations (ODEs/SDEs), starting from a tractable prior distribution. The probability flow ODE formulation…

计算机视觉与模式识别 · 计算机科学 2026-03-19 Liangyu Yuan , Ruoyu Wang , Tong Zhao , Dingwen Fu , Mingkun Lei , Beier Zhu , Chi Zhang

Inspired by recent developments in neural speech coding and diffusion-based language modeling, we tackle speech enhancement by modeling the conditional distribution of clean speech codes given noisy speech codes using absorbing discrete…

声音 · 计算机科学 2026-02-27 Philippe Gonzalez

Learning with guidance has proven effective across a wide range of machine learning systems. Guidance may, for example, come from annotated datasets in supervised learning, pseudo-labels in semi-supervised learning, and expert demonstration…

机器学习 · 计算机科学 2025-10-01 Rui Liu , Peng Gao , Yu Shen , Ming Lin , Pratap Tokekar

In this work, we propose \texttt{TimeGrad}, an autoregressive model for multivariate probabilistic time series forecasting which samples from the data distribution at each time step by estimating its gradient. To this end, we use diffusion…

机器学习 · 计算机科学 2021-07-09 Kashif Rasul , Calvin Seward , Ingmar Schuster , Roland Vollgraf

In autonomous driving tasks, trajectory prediction in complex traffic environments requires adherence to real-world context conditions and behavior multimodalities. Existing methods predominantly rely on prior assumptions or generative…

计算机视觉与模式识别 · 计算机科学 2024-02-07 Yiming Xu , Hao Cheng , Monika Sester

The diffusion model has gained popularity in vision applications due to its remarkable generative performance and versatility. However, high storage and computation demands, resulting from the model size and iterative generation, hinder its…

计算机视觉与模式识别 · 计算机科学 2023-12-12 Junhyuk So , Jungwon Lee , Daehyun Ahn , Hyungjun Kim , Eunhyeok Park

Multi-class anomaly detection aims to build unified models across diverse product categories. However, as the number of categories grows, its performance often degrades due to increasingly complex and heterogeneous normal distributions. To…

计算机视觉与模式识别 · 计算机科学 2026-05-26 Yaoxuan Feng , Yuxin Li , Weijiang Lv , Zixuan Zhao , Yubiao Wang , Wenchao Chen , Bo Chen , Hongwei Liu

The ability to categorize is a cornerstone of visual intelligence, and a key functionality for artificial, autonomous visual machines. This problem will never be solved without algorithms able to adapt and generalize across visual domains.…

计算机视觉与模式识别 · 计算机科学 2019-06-14 Massimiliano Mancini , Samuel Rota Bulò , Barbara Caputo , Elisa Ricci

Generative AI has redefined artificial intelligence, enabling the creation of innovative content and customized solutions that drive business practices into a new era of efficiency and creativity. In this paper, we focus on diffusion…

机器学习 · 计算机科学 2024-03-21 Zihao Li , Hui Yuan , Kaixuan Huang , Chengzhuo Ni , Yinyu Ye , Minshuo Chen , Mengdi Wang

Large language models (LLMs) have achieved remarkable performance across a wide range of tasks, but their increasing parameter sizes significantly slow down inference. Speculative decoding mitigates this issue by leveraging a smaller draft…

计算与语言 · 计算机科学 2026-05-27 Kuan-Wei Lu , Ding-Yong Hong , Pangfeng Liu , Jan-Jan Wu

Diffusion models generate high-dimensional data such as images by learning a process that gradually removes noise from corrupted data. Recent studies have shown that the backward dynamics of diffusion models exhibit two characteristic…

统计力学 · 物理学 2026-04-14 Tomoei Takahashi , Takashi Takahashi , Yoshiyuki Kabashima

Real-world data often has a long-tailed distribution, where the scarcity of tail samples significantly limits the model's generalization ability. Denoising Diffusion Probabilistic Models (DDPM) are generative models based on stochastic…

计算机视觉与模式识别 · 计算机科学 2024-09-24 Jingyu Kong , Yuan Guo , Yu Wang , Yuping Duan

We study the high-dimensional linear regression problem with categorical predictors that have many levels. We propose a new estimation approach, which performs model compression via two mechanisms by simultaneously encouraging (a)…

统计方法学 · 统计学 2026-03-30 Kayhan Behdin , Riade Benbaki , Peter Radchenko , Rahul Mazumder

Multivariate time series forecasting involves predicting future values based on historical observations. However, existing approaches primarily rely on predefined single-scale patches or lack effective mechanisms for multi-scale feature…

机器学习 · 计算机科学 2025-09-24 Huanyao Zhang , Jiaye Lin , Wentao Zhang , Haitao Yuan , Guoliang Li

High-dimensional generative models have many applications including image compression, multimedia generation, anomaly detection and data completion. State-of-the-art estimators for natural images are autoregressive, decomposing the joint…

机器学习 · 计算机科学 2020-06-30 Ajay Jain , Pieter Abbeel , Deepak Pathak

Adaptive gradient methods like Adagrad and its variants are widespread in large-scale optimization. However, their use of diagonal preconditioning matrices limits the ability to capture parameter correlations. Full-matrix adaptive methods,…

机器学习 · 计算机科学 2025-09-01 Tatyana Matveeva , Aleksandr Katrutsa , Evgeny Frolov

Speculative Decoding (SD) accelerates large language model inference by employing a small draft model to generate predictions, which are then verified by a larger target model. The effectiveness of SD hinges on the alignment between these…

计算与语言 · 计算机科学 2025-10-23 Yuezhou Hu , Jiaxin Guo , Xinyu Feng , Tuo Zhao