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Hyperspectral imagers on satellites obtain the fine spectral signatures essential for distinguishing one material from another at the expense of limited spatial resolution. Enhancing the latter is thus a desirable preprocessing step in…

图像与视频处理 · 电气工程与系统科学 2025-11-11 Davide Piccinini , Diego Valsesia , Enrico Magli

This paper introduces Decoupled Supervised Learning with Information Regularization (DeInfoReg), a novel approach that transforms a long gradient flow into multiple shorter ones, thereby mitigating the vanishing gradient problem.…

机器学习 · 计算机科学 2025-07-16 Zih-Hao Huang , You-Teng Lin , Hung-Hsuan Chen

Compared with random sampling, low-discrepancy sampling is more effective in covering the search space. However, the existing research cannot definitely state whether the impact of a low-discrepancy sample on particle swarm optimization…

神经与进化计算 · 计算机科学 2023-07-04 Feng Wu , Yuelin Zhao , Jianhua Pang , Jun Yan , Wanxie Zhong

Accurately predicting phonon scattering is crucial for understanding thermal transport properties. However, the computational cost of such calculations, especially for four-phonon scattering, can often be more prohibitive when large number…

材料科学 · 物理学 2025-10-02 Ziqi Guo , Xiulin Ruan , Guang Lin

Nowadays, analyzing and reducing the ever larger astronomical datasets is becoming a crucial challenge, especially for long cumulated observation times. The INTEGRAL/SPI X-gamma-ray spectrometer is an instrument for which it is essential to…

天体物理仪器与方法 · 物理学 2013-05-27 L. Bouchet , P. Amestoy , A. Buttari , F. -H. Rouet , M. Chauvin

In automotive systems, a radar is a key component of autonomous driving. Using transmit and reflected radar signal by a target, we can capture the target range and velocity. However, when interference signals exist, noise floor increases…

信号处理 · 电气工程与系统科学 2019-11-13 Jiwoo Mun , Heasung Kim , Jungwoo Lee

This work develops a proximal primal-dual decentralized strategy for multi-agent optimization problems that involve multiple coupled affine constraints, where each constraint may involve only a subset of the agents. The constraints are…

最优化与控制 · 数学 2019-12-12 Sulaiman A. Alghunaim , Kun Yuan , Ali H. Sayed

Parallel imaging has been an essential technique to accelerate MR imaging. Nevertheless, the acceleration rate is still limited due to the ill-condition and challenges associated with the undersampled reconstruction. In this paper, we…

图像与视频处理 · 电气工程与系统科学 2019-08-07 Yanxia Chen , Taohui Xiao , Cheng Li , Qiegen Liu , Shanshan Wang

Efficient Transformers have been developed for long sequence modeling, due to their subquadratic memory and time complexity. Sparse Transformer is a popular approach to improving the efficiency of Transformers by restricting self-attention…

机器学习 · 计算机科学 2023-02-01 Aosong Feng , Irene Li , Yuang Jiang , Rex Ying

We demonstrate a new technique for detecting radio transients based on interferometric closure quantities. The technique uses the bispectrum, the product of visibilities around a closed-loop of baselines of an interferometer. The bispectrum…

天体物理仪器与方法 · 物理学 2015-06-03 Casey J. Law , Geoffrey C. Bower

Inference-time optimization scales computation to derive deliberate reasoning steps for effective performance. While previous search-based strategies address the short-sightedness of auto-regressive generation, the vast search space leads…

机器学习 · 计算机科学 2025-03-18 Fangzhi Xu , Hang Yan , Chang Ma , Haiteng Zhao , Jun Liu , Qika Lin , Zhiyong Wu

The Transformer has been an indispensable staple in deep learning. However, for real-life applications, it is very challenging to deploy efficient Transformers due to immense parameters and operations of models. To relieve this burden,…

硬件体系结构 · 计算机科学 2022-11-01 Chao Fang , Aojun Zhou , Zhongfeng Wang

Large denoising diffusion models, such as Stable Diffusion, have been trained on billions of image-caption pairs to perform text-conditioned image generation. As a byproduct of this training, these models have acquired general knowledge…

计算机视觉与模式识别 · 计算机科学 2025-10-07 Alexandros Graikos , Nebojsa Jojic , Dimitris Samaras

The problem of decentralized sequential change detection is considered, where an abrupt change occurs in an area monitored by a number of sensors; the sensors transmit their data to a fusion center, subject to bandwidth and energy…

统计理论 · 数学 2013-11-12 Georgios Fellouris , George V. Moustakides

Dispersive Fourier transformation is a powerful technique in which the spectrum of an optical pulse is mapped into a time-domain waveform using chromatic dispersion. It replaces a diffraction grating and detector array with a dispersive…

光学 · 物理学 2009-11-13 Keisuke Goda , Kevin K. Tsia , Bahram Jalali

We present an algorithm to simulate the many-body depletion interaction between anisotropic colloids in an implicit way, integrating out the degrees of freedom of the depletants, which we treat as an ideal gas. Because the depletant…

软凝聚态物质 · 物理学 2015-08-31 Jens Glaser , Andrew S. Karas , Sharon C. Glotzer

Diffusion probabilistic models can generate high-quality samples. Yet, their sampling process requires numerous denoising steps, making it slow and computationally intensive. We propose to reduce the sampling cost by pruning a pretrained…

计算机视觉与模式识别 · 计算机科学 2024-09-25 Alireza Ganjdanesh , Yan Kang , Yuchen Liu , Richard Zhang , Zhe Lin , Heng Huang

Upcoming radio interferometers are aiming to image the sky at new levels of resolution and sensitivity, with wide-band image cubes reaching close to the Petabyte scale for SKA. Modern proximal optimization algorithms have shown a potential…

天体物理仪器与方法 · 物理学 2023-08-22 Pierre-Antoine Thouvenin , Abdullah Abdulaziz , Arwa Dabbech , Audrey Repetti , Yves Wiaux

With its small size, low cost and all-weather operation, millimeter-wave radar can accurately measure the distance, azimuth and radial velocity of a target compared to other traffic sensors. However, in practice, millimeter-wave radars are…

信号处理 · 电气工程与系统科学 2023-07-19 Lulu Liu , Runwei Guan , Fei Ma , Jeremy Smith , Yutao Yue

We introduce an approach for the real-time (2Hz) creation of a dense map and alignment of a moving robotic agent within that map by rendering using a Graphics Processing Unit (GPU). This is done by recasting the scan alignment part of the…

计算机视觉与模式识别 · 计算机科学 2017-02-23 Julian Ryde , Xuchu , Ding