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Measuring learning progress is essential for curiosity-driven exploration in reinforcement learning, but widely used signals such as prediction error often fail to distinguish meaningful, learnable patterns from random noise. This paper…

机器学习 · 计算机科学 2026-05-08 Samuel Blad , Martin Längkvist , Amy Loutfi

We introduce a new generative model where samples are produced via Langevin dynamics using gradients of the data distribution estimated with score matching. Because gradients can be ill-defined and hard to estimate when the data resides on…

机器学习 · 计算机科学 2020-10-13 Yang Song , Stefano Ermon

Generative modeling aims to transform random noise into structured outputs. In this work, we enhance video diffusion models by allowing motion control via structured latent noise sampling. This is achieved by just a change in data: we…

计算机视觉与模式识别 · 计算机科学 2025-08-07 Ryan Burgert , Yuancheng Xu , Wenqi Xian , Oliver Pilarski , Pascal Clausen , Mingming He , Li Ma , Yitong Deng , Lingxiao Li , Mohsen Mousavi , Michael Ryoo , Paul Debevec , Ning Yu

When signals are measured through physical sensors, they are perturbed by noise. To reduce noise, low-pass filters are commonly employed in order to attenuate high frequency components in the incoming signal, regardless if they come from…

信号处理 · 电气工程与系统科学 2021-11-08 Alejandro J. Ordóñez-Conejo , Armin Lederer , Sandra Hirche

Diffusion models are a powerful class of generative models capable of producing high-quality images from pure noise using a simple text prompt. While most methods which introduce additional spatial constraints into the generated images…

计算机视觉与模式识别 · 计算机科学 2024-09-18 Zakaria Patel , Kirill Serkh

Vanilla gradient methods are often highly sensitive to the choice of stepsize, which typically requires manual tuning. Adaptive methods alleviate this issue and have therefore become widely used. Among them, AdaGrad has been particularly…

机器学习 · 统计学 2026-02-16 Matia Bojovic , Saverio Salzo , Massimiliano Pontil

Change detection has been a challenging visual task due to the dynamic nature of real-world scenes. Good performance of existing methods depends largely on prior background images or a long-term observation. These methods, however, suffer…

计算机视觉与模式识别 · 计算机科学 2018-11-21 Chao Chen , Sheng Zhang , Cuibing Du

Calibrating simulation models that take large quantities of multi-dimensional data as input is a hard simulation optimization problem. Existing adaptive sampling strategies offer a methodological solution. However, they may not sufficiently…

统计方法学 · 统计学 2024-07-17 Pranav Jain , Sara Shashaani , Eunshin Byon

Diffusion models are state-of-the-art methods in generative modeling when samples from a target probability distribution are available, and can be efficiently sampled, using score matching to estimate score vectors guiding a Langevin…

机器学习 · 统计学 2024-06-21 Omar Chehab , Anna Korba

Diffusion models deliver state-of-the-art generative performance across diverse modalities but remain computationally expensive due to their inherently iterative sampling process. Existing training-free acceleration methods typically…

机器学习 · 计算机科学 2026-02-10 Cheng Jin , Zhenyu Xiao , Yuantao Gu

Denoising diffusion probabilistic models (DDPMs) are a recent family of generative models that achieve state-of-the-art results. In order to obtain class-conditional generation, it was suggested to guide the diffusion process by gradients…

计算机视觉与模式识别 · 计算机科学 2023-03-17 Bahjat Kawar , Roy Ganz , Michael Elad

Deep Neural Networks (DNNs) have been shown to be susceptible to memorization or overfitting in the presence of noisily-labelled data. For the problem of robust learning under such noisy data, several algorithms have been proposed. A…

机器学习 · 计算机科学 2022-12-06 Deep Patel , P. S. Sastry

High-dimensional changepoint inference that adapts to various change patterns has received much attention recently. We propose a simple, fast yet effective approach for adaptive changepoint testing. The key observation is that two…

统计方法学 · 统计学 2022-05-03 Guanghui Wang , Long Feng

Score-based diffusion models are a class of generative models whose dynamics is described by stochastic differential equations that map noise into data. While recent works have started to lay down a theoretical foundation for these models,…

Instance segmentation with neural networks is an essential task in environment perception. In many works, it has been observed that neural networks can predict false positive instances with high confidence values and true positives with low…

计算机视觉与模式识别 · 计算机科学 2026-01-13 Kira Maag , Matthias Rottmann , Serin Varghese , Fabian Hueger , Peter Schlicht , Hanno Gottschalk

Diffusion and flow-based generative models have shown strong potential for image restoration. However, image denoising under unknown and varying noise conditions remains challenging, because the learned vector fields may become inconsistent…

计算机视觉与模式识别 · 计算机科学 2026-04-06 Jigang Duan , Genwei Ma , Xu Jiang , Wenfeng Xu , Ping Yang , Xing Zhao

Autoregressive models (ARMs) currently hold state-of-the-art performance in likelihood-based modeling of image and audio data. Generally, neural network based ARMs are designed to allow fast inference, but sampling from these models is…

机器学习 · 计算机科学 2020-07-09 Auke Wiggers , Emiel Hoogeboom

We introduce Adjoint Sampling, a highly scalable and efficient algorithm for learning diffusion processes that sample from unnormalized densities, or energy functions. It is the first on-policy approach that allows significantly more…

Diffusion models have demonstrated strong performance in time series forecasting, yet often suffer from semantic misalignment between generated trajectories and conditioning covariates, especially under complex or multimodal conditions. To…

机器学习 · 计算机科学 2025-08-05 Rui Ding , Hanyang Meng , Zeyang Zhang , Jielong Yang

Conformal regression provides prediction intervals with global coverage guarantees, but often fails to capture local error distributions, leading to non-homogeneous coverage. We address this with a new adaptive method based on rescaling…

机器学习 · 计算机科学 2023-06-01 Nicolas Deutschmann , Mattia Rigotti , Maria Rodriguez Martinez