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In this paper, we propose a simple strategy for estimating the convergence point approximately by averaging the elite sub-population. Based on this idea, we derive two methods, which are ordinary averaging strategy, and weighted averaging…

Neural and Evolutionary Computing · Computer Science 2022-09-01 Rui Zhong , Masaharu Munetomo

Demosaicking is standardly the first step in today's Image Signal Processing (ISP) pipeline of digital cameras. It reconstructs image RGB values from the spatially and spectrally sparse Color Filter Array (CFA) samples, which are the…

Computer Vision and Pattern Recognition · Computer Science 2020-04-23 Niu Yan , Jihong Ouyang

Delay-and-sum (DAS) algorithms are widely used for beamforming in linear array photoacoustic imaging systems and are characterized by fast execution. However, these algorithms suffer from various drawbacks like low resolution, low contrast,…

Medical Physics · Physics 2021-07-29 Souradip Paul , Subhamoy Mandal , Mayanglambam Suheshkumar Singh

We address a learning-to-normalize problem by proposing Switchable Normalization (SN), which learns to select different normalizers for different normalization layers of a deep neural network. SN employs three distinct scopes to compute…

Computer Vision and Pattern Recognition · Computer Science 2019-04-25 Ping Luo , Jiamin Ren , Zhanglin Peng , Ruimao Zhang , Jingyu Li

Images captured underwater are often characterized by low contrast, color distortion, and noise. To address these visual degradations, we propose a novel scheme by constructing an adaptive color and contrast enhancement, and denoising…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Xinjie Li , Guojia Hou , Kunqian Li , Zhenkuan Pan

Randomized neural network (RaNN) methods have been proposed for solving various partial differential equations (PDEs), demonstrating high accuracy and efficiency. However, initializing the fixed parameters remains challenging. Additionally,…

Numerical Analysis · Mathematics 2025-11-25 Haoning Dang , Fei Wang , Song Jiang

We formulate the problem of neural network optimization as Bayesian filtering, where the observations are the backpropagated gradients. While neural network optimization has previously been studied using natural gradient methods which are…

Machine Learning · Statistics 2020-04-17 Laurence Aitchison

The continuous development of new adaptive filters (AFs) based on novel cost functions (CFs) is driven by the demands of various application scenarios and noise environments. However, these algorithms typically demonstrate optimal…

Signal Processing · Electrical Eng. & Systems 2025-06-03 Yi Peng , Haiquan Zhao , Jinhui Hu

Many deep Convolutional Neural Networks (CNN) make incorrect predictions on adversarial samples obtained by imperceptible perturbations of clean samples. We hypothesize that this is caused by a failure to suppress unusual signals within…

Computer Vision and Pattern Recognition · Computer Science 2016-03-18 Qiyang Zhao , Lewis D Griffin

Due to the low impedance and high feeding currents, it is naturally challenging to design super-directive antenna arrays that perfectly match the feed line, and this becomes almost impossible as the number of elements increases. In this…

Signal Processing · Electrical Eng. & Systems 2024-02-13 Ihsan Kanbaz , Okan Yurduseven , Michail Matthaiou

In Neural Networks (NN), Adaptive Activation Functions (AAF) have parameters that control the shapes of activation functions. These parameters are trained along with other parameters in the NN. AAFs have improved performance of Neural…

Computer Vision and Pattern Recognition · Computer Science 2016-08-24 Le Hou , Dimitris Samaras , Tahsin M. Kurc , Yi Gao , Joel H. Saltz

We present a novel end-to-end deep learning-based adaptation control algorithm for frequency-domain adaptive system identification. The proposed method exploits a deep neural network to map observed signal features to corresponding…

Audio and Speech Processing · Electrical Eng. & Systems 2022-03-07 Thomas Haubner , Andreas Brendel , Walter Kellermann

In orthogonal frequency division multiplexing (OFDM), accurate channel estimation is crucial. Classical signal processing-based approaches, such as linear minimum mean-squared error (LMMSE) estimation, often require second-order statistics…

Signal Processing · Electrical Eng. & Systems 2026-01-28 TaeJun Ha , Chaehyun Jung , Hyeonuk Kim , Jeongwoo Park , Jeonghun Park

Due to its rapid response time and a high degree of robustness, the selective fixed-filter active noise control (SFANC) method appears to be a viable candidate for widespread use in a variety of practical active noise control (ANC) systems.…

Machine Learning · Computer Science 2022-08-19 Zhengding Luo , Dongyuan Shi , Woon-Seng Gan

Spiking Neural Networks (SNNs) have emerged as a promising energy-efficient alternative to traditional Artificial Neural Networks (ANNs). Despite this, bridging the performance gap with ANNs in practical scenarios remains a significant…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Ziqing Wang , Yuetong Fang , Jiahang Cao , Renjing Xu

This paper introduces a novel adaptation approach for first-order pre- and de-emphasis filters, an essential tool in many speech and audio codecs to increase coding efficiency and perceived quality. The proposed zero-bit self-adaptation…

Audio and Speech Processing · Electrical Eng. & Systems 2024-08-13 Niloofar Omidi Piralideh , Philippe Gournay , Roch Lefebvre

We study distributed optimization problems over a network when the communication between the nodes is constrained, and so information that is exchanged between the nodes must be quantized. Recent advances using the distributed gradient…

Optimization and Control · Mathematics 2019-05-14 Thinh T. Doan , Siva Theja Maguluri , Justin Romberg

Deep convolutional neural networks have been proved successful on a wide range of tasks, yet they are still hindered by their large computation cost in many industrial scenarios. In this paper, we propose to reduce such cost for CNNs…

Machine Learning · Computer Science 2019-10-22 Jinting Chen , Zhaocheng Zhu , Cheng Li , Yuming Zhao

Diffusion and flow-based generative models have shown strong potential for image restoration. However, image denoising under unknown and varying noise conditions remains challenging, because the learned vector fields may become inconsistent…

Computer Vision and Pattern Recognition · Computer Science 2026-04-06 Jigang Duan , Genwei Ma , Xu Jiang , Wenfeng Xu , Ping Yang , Xing Zhao

Noise in image sensors led to the development of a whole range of denoising filters. A noisy image can become hard to recognize and often require several types of post-processing compensation circuits. This paper proposes an adaptive…

Image and Video Processing · Electrical Eng. & Systems 2022-09-27 O. Krestinskaya , K. N. Salama , A. P. James
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