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In this paper, four adaptive radar architectures for target detection in heterogeneous Gaussian environments are devised. The first architecture relies on a cyclic optimization exploiting the Maximum Likelihood Approach in the original data…

Signal Processing · Electrical Eng. & Systems 2023-07-19 Jun Liu , Davide Massaro , Danilo Orlando , Alfonso Farina

Neural fields have been broadly investigated as scene representations for the reproduction and novel generation of diverse outdoor scenes, including those autonomous vehicles and robots must handle. While successful approaches for RGB and…

Wireless signals are integral to modern society, enabling both communication and increasingly, environmental sensing. While various propagation models exist, ranging from empirical methods to full-wave simulations, the phenomenon of…

Signal Processing · Electrical Eng. & Systems 2025-09-10 Anurag Pallaprolu , Winston Hurst , Yasamin Mostofi

This work leverages neural radiance fields and remote sensing for forestry applications. Here, we show neural radiance fields offer a wide range of possibilities to improve upon existing remote sensing methods in forest monitoring. We…

Computer Vision and Pattern Recognition · Computer Science 2024-01-29 Juan Castorena

Deep Neural Network (DNN) based classifiers have recently been used for the modulation classification of RF signals. These classifiers have shown impressive performance gains relative to conventional methods, however, they are vulnerable to…

Machine Learning · Computer Science 2024-10-10 Wenhan Zhang , Meiyu Zhong , Ravi Tandon , Marwan Krunz

Synthetic Aperture Radar has been extensively used in numerous fields and can gather a wealth of information about the area of interest. This large scene data intensive technology puts a high value on automatic target recognition which can…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Guibin Zhao , Pengfei Li , Zhibo Zhang , Fusen Guo , Xueting Huang , Wei Xu , Jinyin Wang , Jianlong Chen

Cognitive Radio (CR) systems, which dynamically adapt to changing spectrum environments, could benefit significantly from advancements in machine learning technologies. These systems can be enhanced in terms of spectral efficiency,…

Machine Learning · Computer Science 2026-01-16 Andrea Melis , Andrea Piroddi , Roberto Girau

The real world exhibits rich structure and detail across many scales of observation. It is difficult, however, to capture and represent a broad spectrum of scales using ordinary images. We devise a novel paradigm for learning a…

In self-supervised learning, a model is trained to solve a pretext task, using a data set whose annotations are created by a machine. The objective is to transfer the trained weights to perform a downstream task in the target domain. We…

Machine Learning · Computer Science 2021-10-22 Prathamesh Sonawane , Sparsh Drolia , Saqib Shamsi , Bhargav Jain

Speech representation and modelling in high-dimensional spaces of acoustic waveforms, or a linear transformation thereof, is investigated with the aim of improving the robustness of automatic speech recognition to additive noise. The…

Computation and Language · Computer Science 2015-03-31 Matthew Ager , Zoran Cvetkovic , Peter Sollich

Image classification is vulnerable to adversarial attacks. This work investigates the robustness of Saak transform against adversarial attacks towards high performance image classification. We develop a complete image classification system…

Computer Vision and Pattern Recognition · Computer Science 2019-02-11 Thiyagarajan Ramanathan , Abinaya Manimaran , Suya You , C-C Jay Kuo

In terms of complex radio environments especially in dense urban areas, a very interesting topic is considered - the utilization of reconfigurable intelligent surfaces. Basically, based on simple controls of the angle of reflection of the…

Networking and Internet Architecture · Computer Science 2024-02-29 Łukasz Kułacz

Reinforcement learning (RL) enables agents to learn optimal behaviors through interaction with their environment and has been increasingly deployed in safety-critical applications, including autonomous driving. Despite its promise, RL is…

While generalizing well over natural inputs, neural networks are vulnerable to adversarial inputs. Existing defenses against adversarial inputs have largely been detached from the real world. These defenses also come at a cost to accuracy.…

Machine Learning · Computer Science 2019-12-05 Varun Chandrasekaran , Brian Tang , Nicolas Papernot , Kassem Fawaz , Somesh Jha , Xi Wu

The tracking-by-detection framework requires a set of positive and negative training samples to learn robust tracking models for precise localization of target objects. However, existing tracking models mostly treat different samples…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Xiao Wang , Chenglong Li , Rui Yang , Tianzhu Zhang , Jin Tang , Bin Luo

Reinforcement learning (RL) is a foundation of learning in biological systems and provides a framework to address numerous challenges with real-world artificial intelligence applications. Efficient implementations of RL techniques could…

Machine Learning · Computer Science 2021-09-29 Wilkie Olin-Ammentorp , Yury Sokolov , Maxim Bazhenov

Intentionally crafted adversarial samples have effectively exploited weaknesses in deep neural networks. A standard method in adversarial robustness assumes a framework to defend against samples crafted by minimally perturbing a sample such…

Machine Learning · Computer Science 2022-11-07 Anaelia Ovalle , Evan Czyzycki , Cho-Jui Hsieh

We present a method to learn automaton models that are more robust to input modifications. It iteratively aligns sequences to a learned model, modifies the sequences to their aligned versions, and re-learns the model. Automaton learning…

Machine Learning · Computer Science 2022-06-17 Dennis Mouwen , Sicco Verwer , Azqa Nadeem

Active reconfigurable intelligent surfaces (RISs) are a novel and promising technology that allows controlling the radio propagation environment while compensating for the product path loss along the RIS-assisted path. In this letter, we…

Signal Processing · Electrical Eng. & Systems 2022-05-16 Mohamed Rihan , Emanuele Grossi , Luca Venturino , Stefano Buzzi

Deep neural networks have proven to be quite effective in a wide variety of machine learning tasks, ranging from improved speech recognition systems to advancing the development of autonomous vehicles. However, despite their superior…

Machine Learning · Computer Science 2016-12-14 Qinglong Wang , Wenbo Guo , Alexander G. Ororbia , Xinyu Xing , Lin Lin , C. Lee Giles , Xue Liu , Peng Liu , Gang Xiong