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Radio frequency (RF) signal recognition plays a critical role in modern wireless communication and security applications. Deep learning-based approaches have achieved strong performance but typically rely heavily on extensive training data…

Signal Processing · Electrical Eng. & Systems 2025-10-28 Lukas Henneke , Frank Kurth

In real-life applications, machine learning models often face scenarios where there is a change in data distribution between training and test domains. When the aim is to make predictions on distributions different from those seen at…

Machine Learning · Computer Science 2021-11-04 Lucas Mansilla , Rodrigo Echeveste , Diego H. Milone , Enzo Ferrante

Generative adversarial network-based models have shown remarkable performance in the field of speech enhancement. However, the current optimization strategies for these models predominantly focus on refining the architecture of the…

Sound · Computer Science 2025-09-10 Xihao Yuan , Siqi Liu , Yan Chen , Hang Zhou , Chang Liu , Hanting Chen , Jie Hu

We consider the problem of test-time domain generalization, where a model is trained on several source domains and adjusted on target domains never seen during training. Different from the common methods that fine-tune the model or adjust…

Machine Learning · Computer Science 2025-02-19 Sameer Ambekar , Zehao Xiao , Xiantong Zhen , Cees G. M. Snoek

In the context of signal detection in the presence of an unknown time-varying channel parameter, receivers based on the Expectation Propagation (EP) framework appear to be very promising. EP is a message-passing algorithm based on factor…

Signal Processing · Electrical Eng. & Systems 2024-04-09 Elisa Conti , Armando Vannucci , Amina Piemontese , Giulio Colavolpe

As synthetic imagery is used more frequently in training deep models, it is important to understand how different synthesis techniques impact the performance of such models. In this work, we perform a thorough evaluation of the…

Computer Vision and Pattern Recognition · Computer Science 2019-09-05 Kristofer Schlachter , Connor DeFanti , Sebastian Herscher , Ken Perlin , Jonathan Tompson

Neural Radiance Fields (NeRF) have significantly advanced the field of novel view synthesis, yet their generalization across diverse scenes and conditions remains challenging. Addressing this, we propose the integration of a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Ahmed Qazi , Abdul Basit , Asim Iqbal

Supervised learning results typically rely on assumptions of i.i.d. data. Unfortunately, those assumptions are commonly violated in practice. In this work, we tackle such problem by focusing on domain generalization: a formalization where…

Machine Learning · Computer Science 2024-10-30 Isabela Albuquerque , João Monteiro , Mohammad Darvishi , Tiago H. Falk , Ioannis Mitliagkas

Deep learning models for verification systems often fail to generalize to new users and new environments, even though they learn highly discriminative features. To address this problem, we propose a few-shot domain generalization framework…

Sound · Computer Science 2022-06-29 Seunghan Yang , Debasmit Das , Janghoon Cho , Hyoungwoo Park , Sungrack Yun

The goal of this work is to improve images of traffic scenes that are degraded by natural causes such as fog, rain and limited visibility during the night. For these applications, it is next to impossible to get pixel perfect pairs of the…

Computer Vision and Pattern Recognition · Computer Science 2018-12-10 Elias Vansteenkiste , Patrick Kern

Domain generalization aims at performing well on unseen test environments with data from a limited number of training environments. Despite a proliferation of proposal algorithms for this task, assessing their performance both theoretically…

Machine Learning · Computer Science 2021-11-24 Yining Chen , Elan Rosenfeld , Mark Sellke , Tengyu Ma , Andrej Risteski

Adversarial example detection, which can be conveniently applied in many scenarios, is important in the area of adversarial defense. Unfortunately, existing detection methods suffer from poor generalization performance, because their…

Computer Vision and Pattern Recognition · Computer Science 2024-12-05 Heqi Peng , Yunhong Wang , Ruijie Yang , Beichen Li , Rui Wang , Yuanfang Guo

Domain generalization methods aim to learn models robust to domain shift with data from a limited number of source domains and without access to target domain samples during training. Popular domain alignment methods for domain…

Machine Learning · Computer Science 2022-06-17 Wenyu Zhang , Mohamed Ragab , Chuan-Sheng Foo

This paper presents a parametric variational autoencoder-based human target detection and localization framework working directly with the raw analog-to-digital converter data from the frequency modulated continous wave radar. We propose a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-14 Michael Stephan , Thomas Stadelmayer , Avik Santra , Georg Fischer , Robert Weigel , Fabian Lurz

The problem of domain generalization is to take knowledge acquired from a number of related domains where training data is available, and to then successfully apply it to previously unseen domains. We propose a new feature learning…

Computer Vision and Pattern Recognition · Computer Science 2016-07-28 Muhammad Ghifary , W. Bastiaan Kleijn , Mengjie Zhang , David Balduzzi

Geographic distribution shift arises when the distribution of locations on Earth in a training dataset is different from what is seen at inference time. Using standard empirical risk minimization (ERM) in this setting can lead to uneven…

Machine Learning · Computer Science 2026-02-10 Ruth Crasto , Esther Rolf

We tackle the domain generalisation (DG) problem by posing it as a domain adaptation (DA) task where we adversarially synthesise the worst-case target domain and adapt a model to that worst-case domain, thereby improving the model's…

Machine Learning · Computer Science 2023-02-24 Minyoung Kim , Da Li , Timothy Hospedales

Generalization capability to unseen domains is crucial for machine learning models when deploying to real-world conditions. We investigate the challenging problem of domain generalization, i.e., training a model on multi-domain source data…

Computer Vision and Pattern Recognition · Computer Science 2019-10-31 Qi Dou , Daniel C. Castro , Konstantinos Kamnitsas , Ben Glocker

Precisely modeling radio propagation in dynamic wireless environments is fundamental to the realization of wireless digital twins. Traditional ray tracing methods rely on accurate 3D models with detailed environment parameters, while recent…

Networking and Internet Architecture · Computer Science 2026-04-28 Yuru Zhang , Ming Zhao , Qiang Liu , Ahmed Alkhateeb , Abhishek K. Agrawal , Qi Qu

We introduce the domain adaptation and randomization approach for calibrating neural network-based equalizers for real transmissions, using synthetic data. The approach renders up to 99\% training process reduction, which we demonstrate in…