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Multiple shapes must be obtained in the mechanical design process to satisfy the required design specifications. The inverse design problem has been analyzed in previous studies to obtain such shapes. However, finding multiple shapes in a…

计算工程、金融与科学 · 计算机科学 2021-06-21 Kazuo Yonekura , Kazunari Wada , Katsuyuki Suzuki

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

As a widely recognized approach to deep generative modeling, Variational Auto-Encoders (VAEs) still face challenges with the quality of generated images, often presenting noticeable blurriness. This issue stems from the unrealistic…

机器学习 · 计算机科学 2023-05-22 Georgios Batzolis , Jan Stanczuk , Carola-Bibiane Schönlieb

Paradoxically, a Variational Autoencoder (VAE) could be pushed in two opposite directions, utilizing powerful decoder model for generating realistic images but collapsing the learned representation, or increasing regularization coefficient…

机器学习 · 计算机科学 2022-03-30 Trung Ngo , Najwa Laabid , Ville Hautamäki , Merja Heinäniemi

The rising use of machine learning in various fields requires robust methods to create synthetic tabular data. Data should preserve key characteristics while addressing data scarcity challenges. Current approaches based on Generative…

机器学习 · 计算机科学 2024-11-15 Patricia A. Apellániz , Juan Parras , Santiago Zazo

Deep generative models applied to audio have improved by a large margin the state-of-the-art in many speech and music related tasks. However, as raw waveform modelling remains an inherently difficult task, audio generative models are either…

机器学习 · 计算机科学 2021-12-16 Antoine Caillon , Philippe Esling

Variational autoencoders (VAEs) combine latent variables with amortized variational inference, whose optimization usually converges into a trivial local optimum termed posterior collapse, especially in text modeling. By tracking the…

计算与语言 · 计算机科学 2020-04-21 Chen Wu , Prince Zizhuang Wang , William Yang Wang

We propose a topic-guided variational autoencoder (TGVAE) model for text generation. Distinct from existing variational autoencoder (VAE) based approaches, which assume a simple Gaussian prior for the latent code, our model specifies the…

计算与语言 · 计算机科学 2019-03-19 Wenlin Wang , Zhe Gan , Hongteng Xu , Ruiyi Zhang , Guoyin Wang , Dinghan Shen , Changyou Chen , Lawrence Carin

Colorization is an ambiguous problem, with multiple viable colorizations for a single grey-level image. However, previous methods only produce the single most probable colorization. Our goal is to model the diversity intrinsic to the…

计算机视觉与模式识别 · 计算机科学 2017-04-28 Aditya Deshpande , Jiajun Lu , Mao-Chuang Yeh , Min Jin Chong , David Forsyth

Controllable data generation aims to synthesize data by specifying values for target concepts. Achieving this reliably requires modeling the underlying generative factors and their relationships. In real-world scenarios, these factors…

机器学习 · 计算机科学 2025-11-21 Qilong Zhao , Shiyu Wang , Zeeshan Memon , Yang Qiao , Guangji Bai , Bo Pan , Zhaohui Qin , Liang Zhao

Variational autoencdoers (VAE) are a popular approach to generative modelling. However, exploiting the capabilities of VAEs in practice can be difficult. Recent work on regularised and entropic autoencoders have begun to explore the…

机器学习 · 计算机科学 2022-03-02 Gregory A. Daly , Jonathan E. Fieldsend , Gavin Tabor

Posterior collapse plagues VAEs for text, especially for conditional text generation with strong autoregressive decoders. In this work, we address this problem in variational neural machine translation by explicitly promoting mutual…

计算与语言 · 计算机科学 2019-09-23 Arya D. McCarthy , Xian Li , Jiatao Gu , Ning Dong

Variational autoencoders (VAE) are powerful generative models that learn the latent representations of input data as random variables. Recent studies show that VAE can flexibly learn the complex temporal dynamics of time series and achieve…

机器学习 · 计算机科学 2023-11-14 Borui Cai , Shuiqiao Yang , Longxiang Gao , Yong Xiang

Variational Auto-Encoders (VAEs) have been widely applied for learning compact, low-dimensional latent representations of high-dimensional data. When the correlation structure among data points is available, previous work proposed…

机器学习 · 计算机科学 2019-12-20 Da Tang , Dawen Liang , Nicholas Ruozzi , Tony Jebara

Conditional discrete generative models struggle to faithfully compose multiple input conditions. To address this, we derive a theoretically-grounded formulation for composing discrete probabilistic generative processes, with masked…

机器学习 · 计算机科学 2026-04-08 Jamie Stirling , Noura Al-Moubayed , Chris G. Willcocks , Hubert P. H. Shum

Conditional discrete generative models struggle to faithfully compose multiple input conditions. To address this, we derive a theoretically-grounded formulation for composing discrete probabilistic generative processes, with masked…

计算机视觉与模式识别 · 计算机科学 2026-04-08 Jamie Stirling , Noura Al-Moubayed , Chris G. Willcocks , Hubert P. H. Shum

While cloud-resolving models can explicitly simulate the details of small-scale storm formation and morphology, these details are often ignored by climate models for lack of computational resources. Here, we explore the potential of…

大气与海洋物理 · 物理学 2020-10-27 Griffin Mooers , Jens Tuyls , Stephan Mandt , Michael Pritchard , Tom Beucler

Learning generative models that span multiple data modalities, such as vision and language, is often motivated by the desire to learn more useful, generalisable representations that faithfully capture common underlying factors between the…

机器学习 · 统计学 2019-11-11 Yuge Shi , N. Siddharth , Brooks Paige , Philip H. S. Torr

Few-shot learning (FSL) aims to learn new categories with a few visual samples per class. Few-shot class representations are often biased due to data scarcity. To mitigate this issue, we propose to generate visual samples based on semantic…

计算机视觉与模式识别 · 计算机科学 2022-05-09 Jingyi Xu , Hieu Le

Variational autoencoders (VAEs) are powerful deep generative models widely used to represent high-dimensional complex data through a low-dimensional latent space learned in an unsupervised manner. In the original VAE model, the input data…

机器学习 · 计算机科学 2022-07-05 Laurent Girin , Simon Leglaive , Xiaoyu Bie , Julien Diard , Thomas Hueber , Xavier Alameda-Pineda