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Seismic imaging from sparsely acquired data faces challenges such as low image quality, discontinuities, and migration swing artifacts. Existing convolutional neural network (CNN)-based methods struggle with complex feature distributions…

地球物理 · 物理学 2024-08-01 Xingchen Shi , Shijun Cheng , Weijian Mao , Wei Ouyang

Generative models have attracted significant interest due to their ability to handle uncertainty by learning the inherent data distributions. However, two prominent generative models, namely Generative Adversarial Networks (GANs) and…

机器学习 · 计算机科学 2023-04-25 Yu Wang , Zhiwei Liu , Liangwei Yang , Philip S. Yu

Generative adversarial network (GAN) models can synthesize highquality audio signals while ensuring fast sample generation. However, they are difficult to train and are prone to several issues including mode collapse and divergence. In this…

声音 · 计算机科学 2024-02-06 Teysir Baoueb , Haocheng Liu , Mathieu Fontaine , Jonathan Le Roux , Gael Richard

Engineering design tasks often require synthesizing new designs that meet desired performance requirements. The conventional design process, which requires iterative optimization and performance evaluation, is slow and dependent on initial…

机器学习 · 计算机科学 2021-06-08 Amin Heyrani Nobari , Wei Chen , Faez Ahmed

Recent studies have shown that text-to-speech synthesis quality can be improved by using glottal vocoding. This refers to vocoders that parameterize speech into two parts, the glottal excitation and vocal tract, that occur in the human…

音频与语音处理 · 电气工程与系统科学 2019-03-15 Bajibabu Bollepalli , Lauri Juvela , Paavo Alku

Continuous Conditional Diffusion Model (CCDM) is a diffusion-based framework designed to generate high-quality images conditioned on continuous regression labels. Although CCDM has demonstrated clear advantages over prior approaches across…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Xin Ding , Yun Chen , Sen Zhang , Kao Zhang , Nenglun Chen , Peibei Cao , Yongwei Wang , Fei Wu

It is widely accepted that medical imaging systems should be objectively assessed via task-based image quality (IQ) measures that ideally account for all sources of randomness in the measured image data, including the variation in the…

计算机视觉与模式识别 · 计算机科学 2025-02-25 Xichen Xu , Wentao Chen , Weimin Zhou

Class-conditional image generation using generative adversarial networks (GANs) has been investigated through various techniques; however, it continues to face challenges such as mode collapse, training instability, and low-quality output…

计算机视觉与模式识别 · 计算机科学 2023-06-07 Taesun Yeom , Minhyeok Lee

The generative priors of pre-trained latent diffusion models (DMs) have demonstrated great potential to enhance the visual quality of image super-resolution (SR) results. However, the noise sampling process in DMs introduces randomness in…

图像与视频处理 · 电气工程与系统科学 2024-09-26 Lingchen Sun , Rongyuan Wu , Jie Liang , Zhengqiang Zhang , Hongwei Yong , Lei Zhang

Conditional generative adversarial networks (cGAN) have led to large improvements in the task of conditional image generation, which lies at the heart of computer vision. The major focus so far has been on performance improvement, while…

机器学习 · 计算机科学 2019-03-14 Grigorios G. Chrysos , Jean Kossaifi , Stefanos Zafeiriou

Modeling sequential data has become more and more important in practice. Some applications are autonomous driving, virtual sensors and weather forecasting. To model such systems so called recurrent models are used. In this article we…

机器学习 · 统计学 2017-11-21 Roman Föll , Bernard Haasdonk , Markus Hanselmann , Holger Ulmer

In this paper, we study deep generative models for effective unsupervised learning. We propose VGAN, which works by minimizing a variational lower bound of the negative log likelihood (NLL) of an energy based model (EBM), where the model…

机器学习 · 计算机科学 2016-11-08 Shuangfei Zhai , Yu Cheng , Rogerio Feris , Zhongfei Zhang

Biomedical research increasingly relies on integrating diverse data modalities, including gene expression profiles, medical images, and clinical metadata. While medical images and clinical metadata are routinely collected in clinical…

人工智能 · 计算机科学 2026-01-23 Francesca Pia Panaccione , Carlo Sgaravatti , Pietro Pinoli

Recent advances in conditional generative modeling have introduced Continuous conditional Generative Adversarial Network (CcGAN) and Continuous Conditional Diffusion Model (CCDM) for estimating high-dimensional data distributions…

机器学习 · 计算机科学 2026-02-04 Xin Ding , Yun Chen , Yongwei Wang , Kao Zhang , Sen Zhang , Peibei Cao , Xiangxue Wang

Voice conversion is a method that allows for the transformation of speaking style while maintaining the integrity of linguistic information. There are many researchers using deep generative models for voice conversion tasks. Generative…

声音 · 计算机科学 2023-08-29 Xulong Zhang , Jianzong Wang , Ning Cheng , Jing Xiao

Diffusion-based generative models have demonstrated a capacity for perceptually impressive synthesis, but can they also be great likelihood-based models? We answer this in the affirmative, and introduce a family of diffusion-based…

机器学习 · 计算机科学 2023-04-17 Diederik P. Kingma , Tim Salimans , Ben Poole , Jonathan Ho

Random noise arising from physical processes is an inherent characteristic of measurements and a limiting factor for most signal processing and data analysis tasks. Given the recent interest in generative adversarial networks (GANs) for…

信号处理 · 电气工程与系统科学 2023-08-22 Adam Wunderlich , Jack Sklar

Deep generative models provide powerful tools for distributions over complicated manifolds, such as those of natural images. But many of these methods, including generative adversarial networks (GANs), can be difficult to train, in part…

机器学习 · 统计学 2017-11-08 Akash Srivastava , Lazar Valkov , Chris Russell , Michael U. Gutmann , Charles Sutton

Despite the proliferation of generative models, achieving fast sampling during inference without compromising sample diversity and quality remains challenging. Existing models such as Denoising Diffusion Probabilistic Models (DDPM) deliver…

机器学习 · 计算机科学 2023-10-12 Yanwu Xu , Mingming Gong , Shaoan Xie , Wei Wei , Matthias Grundmann , Kayhan Batmanghelich , Tingbo Hou

Deep generative models have achieved significant progress in speech synthesis to date, while high-fidelity singing voice synthesis is still an open problem for its long continuous pronunciation, rich high-frequency parts, and strong…

音频与语音处理 · 电气工程与系统科学 2022-08-08 Rongjie Huang , Chenye Cui , Feiyang Chen , Yi Ren , Jinglin Liu , Zhou Zhao , Baoxing Huai , Zhefeng Wang