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In model-free deep reinforcement learning (RL) algorithms, using noisy value estimates to supervise policy evaluation and optimization is detrimental to the sample efficiency. As this noise is heteroscedastic, its effects can be mitigated…

机器学习 · 计算机科学 2022-05-04 Vincent Mai , Kaustubh Mani , Liam Paull

We propose a novel and unsupervised representation learning model, i.e., Robust Block-Diagonal Adaptive Locality-constrained Latent Representation (rBDLR). rBDLR is able to recover multi-subspace structures and extract the adaptive…

计算机视觉与模式识别 · 计算机科学 2019-08-06 Zhao Zhang , Jiahuan Ren , Sheng Li , Richang Hong , Zhengjun Zha , Meng Wang

We study the problem of Distributionally Robust Constrained RL (DRC-RL), where the goal is to maximize the expected reward subject to environmental distribution shifts and constraints. This setting captures situations where training and…

机器学习 · 计算机科学 2024-06-25 Zhengfei Zhang , Kishan Panaganti , Laixi Shi , Yanan Sui , Adam Wierman , Yisong Yue

Data-driven Distributionally Robust Optimization (DD-DRO) via optimal transport has been shown to encompass a wide range of popular machine learning algorithms. The distributional uncertainty size is often shown to correspond to the…

机器学习 · 统计学 2021-05-12 Jose Blanchet , Yang Kang , Fan Zhang , Fei He , Zhangyi Hu

We consider a novel rigid body localization (RBL) method, based only on a set of measurements of the distances, as well as the angles between sensors of the vehicle to the anchor landmark points. A key point of the proposed method is to use…

信号处理 · 电气工程与系统科学 2025-09-03 Niclas Führling , Giuseppe Abreu , David González G. , Osvaldo Gonsa

We investigate the problem of reconfigurable intelligent surface (RIS)-aided near-field localization of a user equipment (UE) served by a base station (BS) under phase-dependent amplitude variations at each RIS element. Through a…

信号处理 · 电气工程与系统科学 2022-09-30 Cuneyd Ozturk , Musa Furkan Keskin , Henk Wymeersch , Sinan Gezici

In this letter, we study the robust beamforming problem for the multi-antenna wireless broadcasting system with simultaneous information and power transmission, under the assumption of imperfect channel state information (CSI) at the…

信息论 · 计算机科学 2012-10-23 Zhengzheng Xiang , Meixia Tao

An unknown-position sensor can be localized if there are three or more anchors making time-of-arrival (TOA) measurements of a signal from it. However, the location errors can be very large due to the fact that some of the measurements are…

信息论 · 计算机科学 2016-11-17 Hongyang Chen , Kenneth W. K. Lui , Zizhuo Wang , H. C. So , H. Vincent Poor

In scenarios where high penetration of renewable energy sources (RES) is connected to the grid over long distances, the output of RES exhibits significant fluctuations, making it difficult to accurately characterize. The intermittency and…

最优化与控制 · 数学 2025-02-27 Yuhong Wang , Xinyao Wang , Chen Shen , Jianquan Liao , Qianni Cao , Yufei Teng , Huabo Shi , Gang Chen

A robust observer for performing power system dynamic state estimation (DSE) of a synchronous generator is proposed. The observer is developed using the concept of $\mathcal{L}_{\infty}$ stability for uncertain, nonlinear dynamic generator…

系统与控制 · 电气工程与系统科学 2020-02-19 Sebastian Nugroho , Ahmad F. Taha , Junjian Qi

Learning in uncertain, noisy, or adversarial environments is a challenging task for deep neural networks (DNNs). We propose a new theoretically grounded and efficient approach for robust learning that builds upon Bayesian estimation and…

机器学习 · 计算机科学 2021-11-12 Giuseppina Carannante , Dimah Dera , Ghulam Rasool , Nidhal C. Bouaynaya , Lyudmila Mihaylova

Power system emergency control is generally regarded as the last safety net for grid security and resiliency. Existing emergency control schemes are usually designed off-line based on either the conceived "worst" case scenario or a few…

机器学习 · 计算机科学 2019-04-23 Qiuhua Huang , Renke Huang , Weituo Hao , Jie Tan , Rui Fan , Zhenyu Huang

Secrecy encoding for remote state estimation in the presence of adversarial eavesdroppers is a well studied problem. Typical existing secrecy encoding schemes rely on the transmitter's knowledge of the remote estimator's current…

系统与控制 · 电气工程与系统科学 2024-04-16 Justin M. Kennedy , Jason J. Ford , Daniel E. Quevedo , Falko Dressler

Determinantal Point Processes (DPPs) have attracted significant interest from the machine-learning community due to their ability to elegantly and tractably model the delicate balance between quality and diversity of sets. DPPs are commonly…

机器学习 · 计算机科学 2019-02-27 Zelda Mariet , Mike Gartrell , Suvrit Sra

The localization problem in a wireless sensor network is to determine the coordination of sensor nodes using the known positions of some nodes (called anchors) and corresponding noisy distance measurements. There is a variety of different…

最优化与控制 · 数学 2014-09-19 Pouya Mollaebrahim Ghari , Reza Shahbazian , Seyed Ali Ghorashi

This paper investigates a lightweight deep reinforcement learning (DRL)-assisted weighting framework for CSI-free multi-satellite positioning in LEO constellations, where each visible satellite provides one serving beam (one pilot response)…

信号处理 · 电气工程与系统科学 2026-03-18 Po-Heng Chou , Chiapin Wang , Kuan-Hao Chen , Wei-Chen Hsiao

In this paper, we propose a structured Robust Adaptive Dic-tionary Pair Learning (RA-DPL) framework for the discrim-inative sparse representation learning. To achieve powerful representation ability of the available samples, the setting of…

计算机视觉与模式识别 · 计算机科学 2019-11-21 Yulin Sun , Zhao Zhang , Weiming Jiang , Zheng Zhang , Li Zhang , Shuicheng Yan , Meng Wang

Deep learning (DL) applied to a device's radio-frequency fingerprint~(RFF) has attracted significant attention in physical-layer authentication due to its extraordinary classification performance. Conventional DL-RFF techniques are trained…

信号处理 · 电气工程与系统科学 2022-10-18 Renjie Xie , Wei Xu , Jiabao Yu , Aiqun Hu , Derrick Wing Kwan Ng , A. Lee Swindlehurst

In recent years, the learned local descriptors have outperformed handcrafted ones by a large margin, due to the powerful deep convolutional neural network architectures such as L2-Net [1] and triplet based metric learning [2]. However,…

计算机视觉与模式识别 · 计算机科学 2019-01-29 Yanwu Xu , Mingming Gong , Tongliang Liu , Kayhan Batmanghelich , Chaohui Wang

The steered response power (SRP) method is one of the most popular approaches for acoustic source localization with microphone arrays. It is often based on simplifying acoustic assumptions, such as an omnidirectional sound source in the far…

音频与语音处理 · 电气工程与系统科学 2026-02-10 Kaspar Müller , Markus Buck , Simon Doclo , Jan Østergaard , Tobias Wolff