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It is well-known that the problem of finding the optimal beamformers in massive multiple-input multiple-output (MIMO) networks is challenging because of its non-convexity, and conventional optimization based algorithms suffer from high…

信息论 · 计算机科学 2020-11-10 Minghe Zhu , Tsung-Hui Chang , Mingyi Hong

Dynamic Time Warping (DTW) has become the pragmatic choice for measuring distance between time series. However, it suffers from unavoidable quadratic time complexity when the optimal alignment matrix needs to be computed exactly. This…

机器学习 · 计算机科学 2023-06-02 Fabian Latorre , Chenghao Liu , Doyen Sahoo , Steven C. H. Hoi

For small number of equations, systems of linear (and sometimes nonlinear) equations can be solved by simple classical techniques. However, for large number of systems of linear (or nonlinear) equations, solutions using classical method…

神经与进化计算 · 计算机科学 2013-04-16 A. R. M. Jalal Uddin Jamali , M. M. A. Hashem , Md. Bazlar Rahman

In this study we present a non-overlapping Schwarz waveform relaxation (SWR) method applied to a one dimensional model problem representative of the coupling between the ocean and the atmosphere. This problem includes nonlinear interface…

偏微分方程分析 · 数学 2021-11-19 Simon Clement , Florian Lemarié , Eric Blayo

This paper considers a distributed wave-based sensing system that probes a scene consisting of multiple interacting idealized targets. Each sensor is a collocated transmit-receive pair that is capable of transmitting arbitrary wideband…

光学 · 物理学 2015-10-27 Jerry Kim , Margaret Cheney , Eric Mokole

Time series forecasting has various applications, such as meteorological rainfall prediction, traffic flow analysis, financial forecasting, and operational load monitoring for various systems. Due to the sparsity of time series data,…

机器学习 · 计算机科学 2025-10-01 Xiaojian Wang , Chaoli Zhang , Zhonglong Zheng , Yunliang Jiang

This article provides an effective computational algorithm based on Legendre wavelet (LW) and standard tau approach to approximate the solution of multi-dimensional distributed order time-space fractional weakly singular integro-partial…

数值分析 · 数学 2022-06-01 Yashveer Kuma , Somveer Singh , Reshma Singh , Vineet Kumar Singh

In this research paper, an efficient routing protocol for all optical network (AOL) is proposed. The technique uses wavelength division multiplexing (WDM). The proposed one is different from the conventional AOL protocol in transmission of…

网络与互联网体系结构 · 计算机科学 2014-07-25 Kazi Sakib , Mosaddek Hossain Kamal , Upama Kabir

This paper addresses learning end-to-end models for time series data that include a temporal alignment step via dynamic time warping (DTW). Existing approaches to differentiable DTW either differentiate through a fixed warping path or apply…

机器学习 · 计算机科学 2023-03-21 Ming Xu , Sourav Garg , Michael Milford , Stephen Gould

Variational inequalities as an effective tool for solving applied problems, including machine learning tasks, have been attracting more and more attention from researchers in recent years. The use of variational inequalities covers a wide…

最优化与控制 · 数学 2024-12-20 Daniil Medyakov , Gleb Molodtsov , Aleksandr Beznosikov

We propose a novel algorithm for computing the Walsh-Hadamard Transform (WHT) which consists entirely of Haar wavelet transforms. We prove that the algorithm, which we call the Cascading Haar Wavelet (CHW) algorithm, shares precisely the…

数据结构与算法 · 计算机科学 2017-06-28 Andrew Thompson

This paper introduces several new algorithms for consensus over the special orthogonal group. By relying on a convex relaxation of the space of rotation matrices, consensus over rotation elements is reduced to solving a convex problem with…

最优化与控制 · 数学 2014-10-08 Nikolai Matni , Matanya B. Horowitz

Energy beamforming (EB) is a key technique for achieving efficient radio-frequency (RF) transmission enabled wireless energy transfer (WET). By optimally designing the waveforms from multiple energy transmitters (ETs) over the wireless…

信息论 · 计算机科学 2015-11-25 Seunghyun Lee , Rui Zhang

Wavelet based algorithms in numerical analysis are similar to other transform methods in that vectors and operators are expanded into a basis and the computations take place in this new system of coordinates. However, due to the recursive…

comp-gas · 物理学 2008-02-03 G. Beylkin

Latent Diffusion Models (LDM), a subclass of diffusion models, mitigate the computational complexity of pixel-space diffusion by operating within a compressed latent space constructed by Variational Autoencoders (VAEs), demonstrating…

计算机视觉与模式识别 · 计算机科学 2025-10-02 Arpan Mahara , Md Rezaul Karim Khan , Naphtali Rishe , Wenjia Wang , Seyed Masoud Sadjadi

Dantzig-Wolfe decomposition (DWD) is a classical algorithm for solving large-scale linear programs whose constraint matrix involves a set of independent blocks coupled with a set of linking rows. The algorithm decomposes such a model into a…

最优化与控制 · 数学 2021-01-12 Mohamed El Tonbari , Shabbir Ahmed

The performance of Schwarz Waveform Relaxation is critically dependent on the choice of transmission conditions. While classical absorbing conditions work well for wave propagation, they prove insufficient for damped wave equations,…

数值分析 · 数学 2026-01-22 Gerardo Cicalese , Gabriele Ciaramella , Ilario Mazzieri , Martin J. Gander

In response to the increasing number of devices expected in next-generation networks, a shift to over-the-air (OTA) computing has been proposed. By leveraging the superposition of multiple access channels, OTA computing enables efficient…

This paper proposes the application of the waveform relaxation method to the homogenization of multiscale magnetoquasistatic problems. In the monolithic heterogeneous multiscale method, the nonlinear macroscale problem is solved using the…

数值分析 · 数学 2016-10-18 Innocent Niyonzima , Christophe Geuzaine , Sebastian Schöps

SWEEP (Seismic Wave Equation Exploration Platform) is a unified and extensible wave equation solver library designed for wavefield modeling and inversion. It supports a wide range of wave propagation engines, including acoustic, elastic,…

综合物理 · 物理学 2026-04-17 Shaowen Wang , Tariq Alkhalifah