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It has been previously observed that training Variational Recurrent Autoencoders (VRAE) for text generation suffers from serious uninformative latent variables problem. The model would collapse into a plain language model that totally…

计算与语言 · 计算机科学 2019-11-20 Dayiheng Liu , Xu Yang , Feng He , Yuanyuan Chen , Jiancheng Lv

This paper introduces Diffuse-TreeVAE, a deep generative model that integrates hierarchical clustering into the framework of Denoising Diffusion Probabilistic Models (DDPMs). The proposed approach generates new images by sampling from a…

机器学习 · 计算机科学 2024-07-15 Jorge da Silva Goncalves , Laura Manduchi , Moritz Vandenhirtz , Julia E. Vogt

This study explores the use of the Dirichlet Variational Autoencoder (DirVAE) for learning disentangled latent representations of chest X-ray (CXR) images. Our working hypothesis is that distributional sparsity, as facilitated by the…

计算机视觉与模式识别 · 计算机科学 2023-02-07 Rachael Harkness , Alejandro F Frangi , Kieran Zucker , Nishant Ravikumar

Many factors influence speech yielding different renditions of a given sentence. Generative models, such as variational autoencoders (VAEs), capture this variability and allow multiple renditions of the same sentence via sampling. The…

音频与语音处理 · 电气工程与系统科学 2021-06-21 Penny Karanasou , Sri Karlapati , Alexis Moinet , Arnaud Joly , Ammar Abbas , Simon Slangen , Jaime Lorenzo Trueba , Thomas Drugman

The CVAE is one of the most widely-used models in trajectory prediction for AD. It captures the interplay between a driving context and its ground-truth future into a probabilistic latent space and uses it to produce predictions. In this…

机器人学 · 计算机科学 2024-02-28 Faris Janjoš , Marcel Hallgarten , Anthony Knittel , Maxim Dolgov , Andreas Zell , J. Marius Zöllner

Predicting customers' long-term revenue from sparse and irregular transaction data is central to marketing resource allocation in non-contractual settings, yet existing approaches face a trade-off. Traditional probabilistic customer base…

机器学习 · 统计学 2026-04-27 Jeffrey Näf , Riana Valera Mbelson , Markus Meierer

We propose a novel framework COLLAGE for generating collaborative agent-object-agent interactions by leveraging large language models (LLMs) and hierarchical motion-specific vector-quantized variational autoencoders (VQ-VAEs). Our model…

机器学习 · 计算机科学 2024-10-01 Divyanshu Daiya , Damon Conover , Aniket Bera

Speech enhancement significantly improves the clarity and intelligibility of speech in noisy environments, improving communication and listening experiences. In this paper, we introduce a novel pretraining feature-guided diffusion model…

声音 · 计算机科学 2024-06-13 Yiyuan Yang , Niki Trigoni , Andrew Markham

The dynamical variational autoencoders (DVAEs) are a family of latent-variable deep generative models that extends the VAE to model a sequence of observed data and a corresponding sequence of latent vectors. In almost all the DVAEs of the…

音频与语音处理 · 电气工程与系统科学 2023-05-11 Xiaoyu Lin , Xiaoyu Bie , Simon Leglaive , Laurent Girin , Xavier Alameda-Pineda

Variational Autoencoder (VAE)-based generative models offer flexible representation learning by incorporating meta-priors, general premises considered beneficial for downstream tasks. However, the incorporated meta-priors often involve…

机器学习 · 计算机科学 2023-02-27 Nao Nakagawa , Ren Togo , Takahiro Ogawa , Miki Haseyama

The autonomous driving community is increasingly focused on addressing the challenges posed by out-of-distribution (OOD) driving scenarios. A dominant research trend seeks to enhance end-to-end (E2E) driving systems by integrating…

计算机视觉与模式识别 · 计算机科学 2025-12-05 Yingzi Ma , Yulong Cao , Wenhao Ding , Shuibai Zhang , Yan Wang , Boris Ivanovic , Ming Jiang , Marco Pavone , Chaowei Xiao

In this paper, we propose a latent-variable generative model called mixture of dynamical variational autoencoders (MixDVAE) to model the dynamics of a system composed of multiple moving sources. A DVAE model is pre-trained on a…

机器学习 · 计算机科学 2023-12-08 Xiaoyu Lin , Laurent Girin , Xavier Alameda-Pineda

Widely used deep latent variable models (DLVMs), in particular Variational Autoencoders (VAEs), employ overly simplistic priors on the latent space. To achieve strong clustering performance, existing methods that replace the standard normal…

机器学习 · 计算机科学 2025-03-12 Andrew A. Stirn , David A. Knowles

Diffusion Probabilistic Models (DPMs) have shown a powerful capacity of generating high-quality image samples. Recently, diffusion autoencoders (Diff-AE) have been proposed to explore DPMs for representation learning via autoencoding. Their…

计算机视觉与模式识别 · 计算机科学 2023-03-02 Zijian Zhang , Zhou Zhao , Zhijie Lin

This paper explores image caption generation using conditional variational auto-encoders (CVAEs). Standard CVAEs with a fixed Gaussian prior yield descriptions with too little variability. Instead, we propose two models that explicitly…

计算机视觉与模式识别 · 计算机科学 2017-11-21 Liwei Wang , Alexander G. Schwing , Svetlana Lazebnik

The variational autoencoder (VAE) is a powerful generative model that can estimate the probability of a data point by using latent variables. In the VAE, the posterior of the latent variable given the data point is regularized by the prior…

机器学习 · 统计学 2019-12-30 Hiroshi Takahashi , Tomoharu Iwata , Yuki Yamanaka , Masanori Yamada , Satoshi Yagi

Recently, diffusion models have excelled in image generation tasks and have also been applied to neural language processing (NLP) for controllable text generation. However, the application of diffusion models in a cross-lingual setting is…

计算与语言 · 计算机科学 2023-08-01 Linyao Chen , Aosong Feng , Boming Yang , Zihui Li

We investigate the problem of producing diverse solutions to an image super-resolution problem. From a probabilistic perspective, this can be done by sampling from the posterior distribution of an inverse problem, which requires the…

计算机视觉与模式识别 · 计算机科学 2024-01-10 Jean Prost , Antoine Houdard , Andrés Almansa , Nicolas Papadakis

Latent variable models for text, when trained successfully, accurately model the data distribution and capture global semantic and syntactic features of sentences. The prominent approach to train such models is variational autoencoders…

机器学习 · 计算机科学 2021-06-09 Bo Pang , Erik Nijkamp , Tian Han , Ying Nian Wu

The Variational Autoencoder (VAE) is a powerful deep generative model that is now extensively used to represent high-dimensional complex data via a low-dimensional latent space learned in an unsupervised manner. In the original VAE model,…

声音 · 计算机科学 2021-06-15 Xiaoyu Bie , Laurent Girin , Simon Leglaive , Thomas Hueber , Xavier Alameda-Pineda