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We develop a new approach to robust adaptive beamforming in the presence of signal steering vector errors. Since the signal steering vector is known imprecisely, its presumed (prior) value is used to find a more accurate estimate of the…

Information Theory · Computer Science 2012-05-15 Arash Khabbazibasmenj , Sergiy A. Vorobyov , Aboulnasr Hassanien

We have developed a new, very efficient numerical scheme to solve the CR diffusion convection equation that can be applied to the study of the nonlinear time evolution of CR modified shocks for arbitrary spatial diffusion properties. The…

Astrophysics · Physics 2009-11-11 T. W. Jones , H. Kang

In this project, we propose a Variational Inference algorithm to approximate posterior distributions. Building on prior methods, we develop the Gradient-Steered Stein Variational Gradient Descent (G-SVGD) approach. This method introduces a…

Computation · Statistics 2025-02-03 Jose L. Varona-Santana , Marcos A. Capistrán

Bilevel optimization enjoys a wide range of applications in emerging machine learning and signal processing problems such as hyper-parameter optimization, image reconstruction, meta-learning, adversarial training, and reinforcement…

Machine Learning · Computer Science 2025-01-08 Han Shen , Quan Xiao , Tianyi Chen

Bilevel optimization problems can be used to represent the collaborative interaction between a power system and grid-connected entities, called the followers, such as data centers. Most existing approaches assume that such followers'…

Systems and Control · Electrical Eng. & Systems 2022-02-09 Yang Liu , Yu Weng , Rufan Yang , Quoc-Tuan Tran , Hung D. Nguyen

Microgrid operation is highly vulnerable to short-term load uncertainty, while conventional predict-then-optimize pipelines cannot fully align probabilistic forecasting quality with downstream robust scheduling performance. This paper…

Systems and Control · Electrical Eng. & Systems 2026-04-21 Tingwei Cao , Yan Xu

This paper investigates goal-directed tracking control of underactuated blimps with center-of-mass (CoM) reconfiguration. Unlike conventional overactuated blimp designs that rely on redundant actuation for simplified control, this paper…

Robotics · Computer Science 2026-05-05 Xiaorui Wang , Hongwu Wang , Yue Fan , Hao Cheng , Feitian Zhang

This letter proposes a network-wide coordinated optimization model to mitigate voltage unbalance (VU) by unleashing the remaining capacity of community inverter-based resources (IBRs). Existing single-sequence strategies ignore coupled…

Systems and Control · Electrical Eng. & Systems 2026-05-21 Tiantian Ji , Pengfeng Lin , Miao Zhu , Stephan M. Goetz , Ahmed Abu-Siada , Syed Islam

Although input-gradients techniques have evolved to mitigate and tackle the challenges associated with gradients, modern gradient-weighted CAM approaches still rely on vanilla gradients, which are inherently susceptible to the saturation…

Machine Learning · Computer Science 2024-06-27 Vincenzo Buono , Peyman Sheikholharam Mashhadi , Mahmoud Rahat , Prayag Tiwari , Stefan Byttner

Visual Grounding (VG) aims at localizing target objects from an image based on given expressions and has made significant progress with the development of detection and vision transformer. However, existing VG methods tend to generate…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Menghao Li , Chunlei Wang , Wenquan Feng , Shuchang Lyu , Guangliang Cheng , Xiangtai Li , Binghao Liu , Qi Zhao

Background: Impedance Cardiogram (ICG) has impressive number of applications in healthcare. However, its wider adoption is excessively limited due to the well recognized challenges in ICG delineation. We present a simple, adaptive, and…

Signal Processing · Electrical Eng. & Systems 2023-05-26 Nadica Miljković , Tomislav B. Šekara

Extensive research has been performed on continuous, non-invasive, cuffless blood pressure (BP) measurement using artificial intelligence algorithms. This approach involves extracting certain features from physiological signals like ECG,…

Medical Physics · Physics 2023-04-03 Ali Farki , Reza Baradaran Kazemzadeh , Elham Akhondzadeh Noughabi

Many optimization problems require hyperparameters, i.e., parameters that must be pre-specified in advance, such as regularization parameters and parametric regularizers in variational regularization methods for inverse problems, and…

Optimization and Control · Mathematics 2025-10-09 Matthias J. Ehrhardt , Silvia Gazzola , Sebastian J. Scott

Scaling a Search Conversion Rate (CVR) prediction model, especially in high-traffic environments, presents a challenge: superior model quality needs to be balanced with strict constraints on training cost and serving latency. This paper…

Multivariate time series forecasting (MTSF) often faces challenges from missing variables, which hinder conventional spatial-temporal graph neural networks in modeling inter-variable correlations. While GinAR addresses variable missing…

Machine Learning · Computer Science 2025-09-10 Shusen Ma , Tianhao Zhang , Qijiu Xia , Yun-Bo Zhao

With the increasing penetration of inverter-based resources (IBRs) in power grids, system-level coordinated optimization of IBR controllers has become increasingly important for maintaining overall system stability. Unlike most existing…

Systems and Control · Electrical Eng. & Systems 2026-04-06 Haowen Xu , Xin Chen

In display advertising, predicting the conversion rate (CVR), meaning the probability that a user takes a predefined action on an advertiser's website, is a fundamental task for estimating the value of displaying an advertisement to a user.…

Machine Learning · Statistics 2020-05-20 Yuta Saito , Gota Morishita , Shota Yasui

The reference frame memory accesses in inter prediction result in high DRAM bandwidth requirement and power consumption. This problem is more intensive by the adoption of intra block copy (IBC), a new coding tool in the screen content…

Image and Video Processing · Electrical Eng. & Systems 2021-04-06 Jiyuan Hu , Jun Wang , Guangyu Zhong , Jian Cao , Ren Mao , Fan Liang

In this paper, we present a novel hybrid nonlinear explicit-compact scheme for shock-capturing based on a boundary variation diminishing (BVD) reconstruction. In our approach, we combine a non-dissipative sixth-order central compact…

Numerical Analysis · Mathematics 2020-12-21 Amareshwara Sainadh Chamarthi , Steven Frankel

The purpose of this study is to provide a step-by-step demonstration of item recovery for the Multidimensional Graded Response Model (MGRM) in R. Within this scope, a sample simulation design was constructed where the test lengths were set…

Computers and Society · Computer Science 2024-12-25 Yesim Beril Soguksu , Ayse Bilicioglu Gunes , Hatice Gurdil