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Dynamical generative models that produce samples through an iterative process, such as Flow Matching and denoising diffusion models, have seen widespread use, but there have not been many theoretically-sound methods for improving these…

机器学习 · 计算机科学 2025-01-08 Carles Domingo-Enrich , Michal Drozdzal , Brian Karrer , Ricky T. Q. Chen

We introduce a score-based generative sampling method for solving the nonlinear filtering problem with robust accuracy. A major drawback of existing nonlinear filtering methods, e.g., particle filters, is the low stability. To overcome this…

最优化与控制 · 数学 2023-06-16 Feng Bao , Zezhong Zhang , Guannan Zhang

Score-based generative models (SGMs) are a recent breakthrough in generating fake images. SGMs are known to surpass other generative models, e.g., generative adversarial networks (GANs) and variational autoencoders (VAEs). Being inspired by…

机器学习 · 计算机科学 2022-06-20 Jayoung Kim , Chaejeong Lee , Yehjin Shin , Sewon Park , Minjung Kim , Noseong Park , Jihoon Cho

Scene text recognition (STR) suffers from challenges of either less realistic synthetic training data or the difficulty of collecting sufficient high-quality real-world data, limiting the effectiveness of trained models. Meanwhile, despite…

计算机视觉与模式识别 · 计算机科学 2025-09-11 Xingsong Ye , Yongkun Du , Yunbo Tao , Zhineng Chen

Synthetic data augmentation helps language models learn new knowledge in data-constrained domains. However, naively scaling existing synthetic data methods by training on more synthetic tokens or using stronger generators yields diminishing…

机器学习 · 计算机科学 2026-03-31 Seungju Han , Konwoo Kim , Chanwoo Park , Benjamin Newman , Suhas Kotha , Jaehun Jung , James Zou , Yejin Choi

Score-based diffusion models are a highly effective method for generating samples from a distribution of images. We consider scenarios where the training data comes from a noisy version of the target distribution, and present an efficiently…

机器学习 · 统计学 2025-09-30 Dennis Elbrächter , Giovanni S. Alberti , Matteo Santacesaria

Most existing generative models are limited to learning a single probability distribution from the training data and cannot generalize to novel distributions for unseen data. An architecture that can generate samples from both trained…

机器学习 · 计算机科学 2024-10-16 Xinyu Liao , Aoyang Qin , Jacob Seidman , Junqi Wang , Wei Wang , Paris Perdikaris

Score-based generative models (SGMs) have recently demonstrated impressive results in terms of both sample quality and distribution coverage. However, they are usually applied directly in data space and often require thousands of network…

机器学习 · 统计学 2021-12-03 Arash Vahdat , Karsten Kreis , Jan Kautz

Object compositing based on 2D images is a challenging problem since it typically involves multiple processing stages such as color harmonization, geometry correction and shadow generation to generate realistic results. Furthermore,…

计算机视觉与模式识别 · 计算机科学 2022-12-06 Yizhi Song , Zhifei Zhang , Zhe Lin , Scott Cohen , Brian Price , Jianming Zhang , Soo Ye Kim , Daniel Aliaga

Synthetic data generation has been widely adopted in software testing, data privacy, imbalanced learning, and artificial intelligence explanation. In all such contexts, it is crucial to generate plausible data samples. A common assumption…

人工智能 · 计算机科学 2024-10-16 Martina Cinquini , Fosca Giannotti , Riccardo Guidotti

Synthetic augmentation is increasingly used to mitigate data scarcity in financial machine learning, yet its statistical role remains poorly understood. We formalize synthetic augmentation as a modification of the effective training…

人工智能 · 计算机科学 2026-04-17 Mel Sohm , Charles Dezons , Sami Sellami , Oscar Ninou , Axel Pincon

Learning robust object detectors from only a handful of images is a critical challenge in industrial vision systems, where collecting high quality training data can take months. Synthetic data has emerged as a key solution for data…

计算机视觉与模式识别 · 计算机科学 2025-07-04 Brandon Trabucco , Qasim Wani , Benjamin Pikus , Vasu Sharma

Diffusion models are typically trained using score matching, a learning objective agnostic to the underlying noising process that guides the model. This paper argues that Markov noising processes enjoy an advantage over alternatives, as the…

机器学习 · 统计学 2025-05-27 Zheyang Shen , Huihui Wang , Marina Riabiz , Chris J. Oates

Identity-preserving face synthesis aims to generate synthetic face images of virtual subjects that can substitute real-world data for training face recognition models. While prior arts strive to create images with consistent identities and…

计算机视觉与模式识别 · 计算机科学 2025-04-02 Yuxi Mi , Zhizhou Zhong , Yuge Huang , Qiuyang Yuan , Xuan Zhao , Jianqing Xu , Shouhong Ding , ShaoMing Wang , Rizen Guo , Shuigeng Zhou

Acquiring and annotating suitable datasets for training deep learning models is challenging. This often results in tedious and time-consuming efforts that can hinder research progress. However, generative models have emerged as a promising…

计算机视觉与模式识别 · 计算机科学 2023-06-07 Andrea Lampis , Eugenio Lomurno , Matteo Matteucci

Autoregressive models use chain rule to define a joint probability distribution as a product of conditionals. These conditionals need to be normalized, imposing constraints on the functional families that can be used. To increase…

机器学习 · 计算机科学 2020-10-27 Chenlin Meng , Lantao Yu , Yang Song , Jiaming Song , Stefano Ermon

Image generation abilities of text-to-image diffusion models have significantly advanced, yielding highly photo-realistic images from descriptive text and increasing the viability of leveraging synthetic images to train computer vision…

计算机视觉与模式识别 · 计算机科学 2025-02-10 Jiahui Chen , Amy Zhang , Adriana Romero-Soriano

Capitalizing on the complementary advantages of generative and discriminative models has always been a compelling vision in machine learning, backed by a growing body of research. This work discloses the hidden semantic structure within…

计算机视觉与模式识别 · 计算机科学 2025-01-03 Mingjia Li , Shuang Li , Tongrui Su , Longhui Yuan , Jian Liang , Wei Li

We propose a new method for separating superimposed sources using diffusion-based generative models. Our method relies only on separately trained statistical priors of independent sources to establish a new objective function guided by…

机器学习 · 计算机科学 2024-01-18 Tejas Jayashankar , Gary C. F. Lee , Alejandro Lancho , Amir Weiss , Yury Polyanskiy , Gregory W. Wornell

Diffusion models have gained prominence as state-of-the-art techniques for synthesizing images and videos, particularly due to their ability to scale effectively with large datasets. Recent studies have uncovered that these extensive…

计算机视觉与模式识别 · 计算机科学 2025-08-28 Dat Nguyen Cong , Hieu Tran Bao , Hoang Thanh-Tung