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Variational AutoEncoder (VAE) has been extended as a representative nonlinear method for collaborative filtering. However, the bottleneck of VAE lies in the softmax computation over all items, such that it takes linear costs in the number…

机器学习 · 计算机科学 2022-05-31 Jin Chen , Defu Lian , Binbin Jin , Xu Huang , Kai Zheng , Enhong Chen

Unsupervised anomaly detection and localization is a crucial task as it is impossible to collect and label all possible anomalies. Many studies have emphasized the importance of integrating local and global information to achieve accurate…

计算机视觉与模式识别 · 计算机科学 2025-04-03 E. Mathian , H. Liu , L. Fernandez-Cuesta , D. Samaras , M. Foll , L. Chen

We consider the problem of learning Variational Autoencoders (VAEs), i.e., a type of deep generative model, from data with missing values. Such data is omnipresent in real-world applications of machine learning because complete data is…

机器学习 · 计算机科学 2023-10-26 Timur Sudak , Sebastian Tschiatschek

Microstructure quantification is an important step towards establishing structure-property relationships in materials. Machine learning-based image processing methods have been shown to outperform conventional image processing techniques…

材料科学 · 物理学 2025-06-26 Michael D. White , Michael D. Atkinson , Adam J. Plowman , Pratheek Shanthraj

When applying the foreground removal methods to uncover the faint cosmological signal from the epoch of reionization (EoR), the foreground spectra are assumed to be smooth. However, this assumption can be seriously violated in practice…

天体物理仪器与方法 · 物理学 2019-03-15 Weitian Li , Haiguang Xu , Zhixian Ma , Ruimin Zhu , Dan Hu , Zhenghao Zhu , Junhua Gu , Chenxi Shan , Jie Zhu , Xiang-Ping Wu

Remote sensing of oceanographic data often yields incomplete coverage of the measurement domain. This can limit interpretability of the data and identification of coherent features informative of ocean dynamics. Several methods exist to…

大气与海洋物理 · 物理学 2019-03-27 Siavash Ameli , Shawn C. Shadden

We present a novel method for constructing Variational Autoencoder (VAE). Instead of using pixel-by-pixel loss, we enforce deep feature consistency between the input and the output of a VAE, which ensures the VAE's output to preserve the…

计算机视觉与模式识别 · 计算机科学 2024-03-21 Xianxu Hou , Linlin Shen , Ke Sun , Guoping Qiu

Despite recent successes in synthesizing faces and bedrooms, existing generative models struggle to capture more complex image types, potentially due to the oversimplification of their latent space constructions. To tackle this issue,…

机器学习 · 计算机科学 2018-03-13 Wenling Shang , Kihyuk Sohn , Yuandong Tian

Multi-way data analysis has become an essential tool for capturing underlying structures in higher-order data sets where standard two-way analysis techniques often fail to discover the hidden correlations between variables in multi-way…

机器学习 · 计算机科学 2020-03-12 Ali Anaissi , Seid Miad Zandavi

This thesis presents a new algorithm to mitigate cloud masking in the analysis of sea surface temperature (SST) data generated by remote sensing technologies, e.g., Clouds interfere with the analysis of all remote sensing data using…

计算机视觉与模式识别 · 计算机科学 2023-06-02 Angelina Agabin , J. Xavier Prochaska

In this paper, we explore the use of a variational autoencoder (VAE), a deep generative model, to compress and generate images of dark matter density fields from $\Lambda$CDM like cosmological simulations. The VAE learns a compact,…

宇宙学与河外天体物理 · 物理学 2025-07-25 Jazhiel Chacón-Lavanderos , Isidro Gómez-Vargas , Ricardo Menchaca-Mendez , J. Alberto Vázquez

Variational autoencoders (VAEs) have been used extensively to discover low-dimensional latent factors governing neural activity and animal behavior. However, without careful model selection, the uncovered latent factors may reflect noise in…

机器学习 · 计算机科学 2023-12-13 Julia Huiming Wang , Dexter Tsin , Tatiana Engel

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

Identifying flood affected areas in remote sensing data is a critical problem in earth observation to analyze flood impact and drive responses. While a number of methods have been proposed in the literature, there are two main limitations…

计算机视觉与模式识别 · 计算机科学 2024-03-07 Xavier Bou , Thibaud Ehret , Rafael Grompone von Gioi , Jeremy Anger

In surface defect detection, due to the extreme imbalance in the number of positive and negative samples, positive-samples-based anomaly detection methods have received more and more attention. Specifically, reconstruction-based methods are…

计算机视觉与模式识别 · 计算机科学 2023-02-14 Wei Luo , Tongzhi Niu , Lixin Tang , Wenyong Yu , Bin Li

Agricultural image recognition tasks are becoming increasingly dependent on deep learning (DL); however, despite the excellent performance of DL, it is difficult to comprehend the type of logic or features of the input image it uses during…

计算机视觉与模式识别 · 计算机科学 2022-12-13 Harshana Habaragamuwa , Yu Oishi , Kenichi Tanaka

The shock response spectrum (SRS) is widely used to characterize the response of single-degree-of-freedom (SDOF) systems to transient accelerations. Because the mapping from acceleration time history to SRS is nonlinear and many-to-one,…

机器学习 · 计算机科学 2026-03-06 Adam Watts , Andrew Jeon , Destry Newton , Ryan Bowering

Representation disentanglement may help AI fundamentally understand the real world and thus benefit both discrimination and generation tasks. It currently has at least three unresolved core issues: (i) heavy reliance on label annotation and…

计算机视觉与模式识别 · 计算机科学 2025-09-10 Xin Jin , Bohan Li , BAAO Xie , Wenyao Zhang , Jinming Liu , Ziqiang Li , Tao Yang , Wenjun Zeng

This study presents a comparative evaluation of a Variational Autoencoder (VAE) enhanced with Minimum Description Length (MDL) regularization against a Standard Autoencoder for reconstructing high-dimensional gynecological data. The MDL-VAE…

机器学习 · 计算机科学 2025-02-26 Paula Santos

The next generation ground-based telescopes rely heavily on adaptive optics for overcoming the limitation of atmospheric turbulence. In the future adaptive optics modalities, like multi-conjugate adaptive optics (MCAO), atmospheric…

数值分析 · 数学 2015-06-15 Tapio Helin , Mykhaylo Yudytskiy