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Variational autoencoders (VAEs) are powerful tools for learning latent representations of data used in a wide range of applications. In practice, VAEs usually require multiple training rounds to choose the amount of information the latent…

机器学习 · 计算机科学 2023-08-21 Juhan Bae , Michael R. Zhang , Michael Ruan , Eric Wang , So Hasegawa , Jimmy Ba , Roger Grosse

A video prediction model that generalizes to diverse scenes would enable intelligent agents such as robots to perform a variety of tasks via planning with the model. However, while existing video prediction models have produced promising…

计算机视觉与模式识别 · 计算机科学 2021-06-22 Bohan Wu , Suraj Nair , Roberto Martin-Martin , Li Fei-Fei , Chelsea Finn

Deep hierarchical variational autoencoders (VAEs) are powerful latent variable generative models. In this paper, we introduce Hierarchical VAE with Diffusion-based Variational Mixture of the Posterior Prior (VampPrior). We apply…

机器学习 · 计算机科学 2024-12-03 Anna Kuzina , Jakub M. Tomczak

We study a variant of the variational autoencoder model (VAE) with a Gaussian mixture as a prior distribution, with the goal of performing unsupervised clustering through deep generative models. We observe that the known problem of…

A deep generative model that describes human motions can benefit a wide range of fundamental computer vision and graphics tasks, such as providing robustness to video-based human pose estimation, predicting complete body movements for…

计算机视觉与模式识别 · 计算机科学 2021-06-09 Jiaman Li , Ruben Villegas , Duygu Ceylan , Jimei Yang , Zhengfei Kuang , Hao Li , Yajie Zhao

The Variational Autoencoder (VAE) has proven to be an effective model for producing semantically meaningful latent representations for natural data. However, it has thus far seen limited application to sequential data, and, as we…

机器学习 · 计算机科学 2019-11-12 Adam Roberts , Jesse Engel , Colin Raffel , Curtis Hawthorne , Douglas Eck

Variational Autoencoders (VAEs) typically rely on a probabilistic decoder with a predefined likelihood, most commonly an isotropic Gaussian, to model the data conditional on latent variables. While convenient for optimization, this choice…

机器学习 · 统计学 2025-04-29 Chen Xu , Qiang Wang , Lijun Sun

Deep learning has gained significant attention in medical image segmentation. However, the limited availability of annotated training data presents a challenge to achieving accurate results. In efforts to overcome this challenge, data…

图像与视频处理 · 电气工程与系统科学 2024-08-16 Aghiles Kebaili , Jérôme Lapuyade-Lahorgue , Pierre Vera , Su Ruan

Variational autoencoders (VAE) are a powerful and widely-used class of models to learn complex data distributions in an unsupervised fashion. One important limitation of VAEs is the prior assumption that latent sample representations are…

机器学习 · 计算机科学 2018-11-27 Francesco Paolo Casale , Adrian V Dalca , Luca Saglietti , Jennifer Listgarten , Nicolo Fusi

Variational Autoencoders (VAEs), as a form of deep generative model, have been widely used in recent years, and shown great great peformance in a number of different domains, including image generation and anomaly detection, etc.. This…

机器学习 · 计算机科学 2024-08-28 Liang Cheng , Peiyuan Guan , Amir Taherkordi , Lei Liu , Dapeng Lan

Recent work has shown that Variational Autoencoders (VAEs) can be used to upper-bound the information rate-distortion (R-D) function of images, i.e., the fundamental limit of lossy image compression. In this paper, we report an improved…

图像与视频处理 · 电气工程与系统科学 2023-09-07 Zhihao Duan , Jack Ma , Jiangpeng He , Fengqing Zhu

Variational AutoEncoders (VAEs) provide a means to generate representational latent embeddings. Previous research has highlighted the benefits of achieving representations that are disentangled, particularly for downstream tasks. However,…

计算机视觉与模式识别 · 计算机科学 2019-11-18 Matthew J. Vowels , Necati Cihan Camgoz , Richard Bowden

Exemplar-based methods rely on informative data points or prototypes to guide the optimization of learning algorithms. Such data facilitate interpretable model design and prediction. Of particular interest is the utility of exemplars in…

机器学习 · 计算机科学 2022-11-22 Priya Mani , Carlotta Domeniconi

The Variational Autoencoder (VAE) is a seminal approach in deep generative modeling with latent variables. Interpreting its reconstruction process as a nonlinear transformation of samples from the latent posterior distribution, we apply the…

机器学习 · 计算机科学 2023-06-09 Faris Janjoš , Lars Rosenbaum , Maxim Dolgov , J. Marius Zöllner

We present a new method for improving the performances of variational autoencoder (VAE). In addition to enforcing the deep feature consistent principle thus ensuring the VAE output and its corresponding input images to have similar deep…

计算机视觉与模式识别 · 计算机科学 2019-06-06 Xianxu Hou , Ke Sun , Linlin Shen , Guoping Qiu

Deep learning-based super-resolution methods have shown great promise, especially for single image super-resolution (SISR) tasks. Despite the performance gain, these methods are limited due to their reliance on copious data for model…

图像与视频处理 · 电气工程与系统科学 2022-04-06 Yeahia Sarker , Abdullah-Al-Zubaer Imran , Md Hafiz Ahamed , Ripon K. Chakrabortty , Michael J. Ryan , Sajal K. Das

With the introduction of the variational autoencoder (VAE), probabilistic latent variable models have received renewed attention as powerful generative models. However, their performance in terms of test likelihood and quality of generated…

机器学习 · 统计学 2020-01-13 Lars Maaløe , Marco Fraccaro , Valentin Liévin , Ole Winther

Variational autoencoders (VAE) often use Gaussian or category distribution to model the inference process. This puts a limit on variational learning because this simplified assumption does not match the true posterior distribution, which is…

机器学习 · 计算机科学 2017-02-28 Ke Sun , Xiangliang Zhang

Variational auto-encoders (VAEs) have proven to be a well suited tool for performing dimensionality reduction by extracting latent variables lying in a potentially much smaller dimensional space than the data. Their ability to capture…

机器学习 · 统计学 2020-10-23 Clément Chadebec , Clément Mantoux , Stéphanie Allassonnière

A new method for learning variational autoencoders (VAEs) is developed, based on Stein variational gradient descent. A key advantage of this approach is that one need not make parametric assumptions about the form of the encoder…

机器学习 · 计算机科学 2017-11-20 Yunchen Pu , Zhe Gan , Ricardo Henao , Chunyuan Li , Shaobo Han , Lawrence Carin