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Distribution matching can be used to learn invariant representations with applications in fairness and robustness. Most prior works resort to adversarial matching methods but the resulting minimax problems are unstable and challenging to…

机器学习 · 计算机科学 2024-06-05 Ziyu Gong , Ben Usman , Han Zhao , David I. Inouye

Variational Autoencoders (VAEs) have experienced recent success as data-generating models by using simple architectures that do not require significant fine-tuning of hyperparameters. However, VAEs are known to suffer from…

机器学习 · 统计学 2020-07-22 Wei Cheng , Gregory Darnell , Sohini Ramachandran , Lorin Crawford

The ability to accurately model random fields plays a critical role in science and engineering for problems involving uncertain, spatially-varying quantities such as heterogeneous material properties and turbulent flows. Deep generative…

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

Test-time adaptation (TTA) effectively counters distribution shifts but exposes models to adversarial manipulation via the unlabeled test stream. Existing class-wise targeted attacks remain impractical for stealthy exploitation in this…

机器学习 · 计算机科学 2026-05-25 Phuc Duc Nguyen , Quang Duc Nguyen

The vulnerability of deep neural networks to adversarial attacks has been widely demonstrated (e.g., adversarial example attacks). Traditional attacks perform unstructured pixel-wise perturbation to fool the classifier. An alternative…

机器学习 · 计算机科学 2022-05-23 Shuo Wang , Surya Nepal , Carsten Rudolph , Marthie Grobler , Shangyu Chen , Tianle Chen

This paper looks into the problem of detecting network anomalies by analyzing NetFlow records. While many previous works have used statistical models and machine learning techniques in a supervised way, such solutions have the limitations…

机器学习 · 计算机科学 2019-03-18 Quoc Phong Nguyen , Kar Wai Lim , Dinil Mon Divakaran , Kian Hsiang Low , Mun Choon Chan

Deep generative models are reported to be useful in broad applications including image generation. Repeated inference between data space and latent space in these models can denoise cluttered images and improve the quality of inferred…

机器学习 · 统计学 2017-12-13 Yoshihiro Nagano , Ryo Karakida , Masato Okada

We propose a new type of attack for finding adversarial examples for image classifiers. Our method exploits spanners, i.e. deep neural networks whose input space is low-dimensional and whose output range approximates the set of images of…

计算机视觉与模式识别 · 计算机科学 2019-07-11 Ajil Jalal , Andrew Ilyas , Constantinos Daskalakis , Alexandros G. Dimakis

Although mechanism-based interpretability has generated an abundance of insight for discriminative network analysis, generative models are less understood -- particularly outside of image-related applications. We investigate how much of the…

机器学习 · 计算机科学 2026-04-07 Dip Roy , Rajiv Misra , Sanjay Kumar Singh , Anisha Roy

Outlier detection in high-dimensional tabular data is an important task in data mining, essential for many downstream tasks and applications. Existing unsupervised outlier detection algorithms face one or more problems, including inlier…

机器学习 · 计算机科学 2024-04-24 Jose Cribeiro-Ramallo , Vadim Arzamasov , Federico Matteucci , Denis Wambold , Klemens Böhm

Variational autoencoders (VAEs) are a powerful class of deep generative latent variable model for unsupervised representation learning on high-dimensional data. To ensure computational tractability, VAEs are often implemented with a…

机器学习 · 计算机科学 2020-06-09 Alex Campbell , Pietro Liò

Generative Adversarial Networks (GANs) play an increasingly important role in machine learning. However, there is one fundamental issue hindering their practical applications: the absence of capability for encoding real-world samples. The…

机器学习 · 计算机科学 2022-03-02 Jiapeng Zhu , Deli Zhao , Bo Zhang , Bolei Zhou

Generative thermal design for complex geometries is fundamental in many areas of engineering, yet it faces two main challenges: the high computational cost of high-fidelity simulations and the limitations of conventional generative models.…

机器学习 · 计算机科学 2025-09-12 Alicia Tierz , Jad Mounayer , Beatriz Moya , Francisco Chinesta

We present a new method to visualize data ensembles by constructing structured probabilistic representations in latent spaces, i.e., lower-dimensional representations of spatial data features. Our approach transforms the spatial features of…

机器学习 · 计算机科学 2025-09-17 Cenyang Wu , Qinhan Yu , Liang Zhou

Multimodal variational autoencoders (VAEs) aim to capture shared latent representations by integrating information from different data modalities. A significant challenge is accurately inferring representations from any subset of modalities…

机器学习 · 计算机科学 2024-10-16 Yuta Oshima , Masahiro Suzuki , Yutaka Matsuo

We address the challenging open problem of learning an effective latent space for symbolic music data in generative music modeling. We focus on leveraging adversarial regularization as a flexible and natural mean to imbue variational…

声音 · 计算机科学 2020-02-21 Andrea Valenti , Antonio Carta , Davide Bacciu

It has been well demonstrated that adversarial examples, i.e., natural images with visually imperceptible perturbations added, generally exist for deep networks to fail on image classification. In this paper, we extend adversarial examples…

计算机视觉与模式识别 · 计算机科学 2017-07-24 Cihang Xie , Jianyu Wang , Zhishuai Zhang , Yuyin Zhou , Lingxi Xie , Alan Yuille

Multi-modal foundation models align images, text, and other modalities in a shared embedding space but remain vulnerable to adversarial illusions [35], where imperceptible perturbations disrupt cross-modal alignment and mislead downstream…

机器学习 · 计算机科学 2026-04-22 Fatemeh Akbarian , Anahita Baninajjar , Yingyi Zhang , Ananth Balashankar , Amir Aminifar

Gradient-based adversarial attacks on neural networks can be crafted in a variety of ways by varying either how the attack algorithm relies on the gradient, the network architecture used for crafting the attack, or both. Most recent work…

机器学习 · 计算机科学 2020-01-28 Rehana Mahfuz , Rajeev Sahay , Aly El Gamal