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The Fast Fourier Transform (FFT) is widely used in applications such as MRI, CT, and interferometry; however, because of its dependence on uniformly sampled data, it requires the use of gridding techniques for practical implementation. The…

数值分析 · 数学 2025-12-22 Federico Achini , Paola Causin , Sara Vanini , Ke Chen , Simone Scacchi

Tensor decomposition has been widely used in machine learning and high-volume data analysis. However, large-scale tensor factorization often consumes huge memory and computing cost. Meanwhile, modernized computing hardware such as tensor…

最优化与控制 · 数学 2022-09-12 Zi Yang , Junnan Shan , Zheng Zhang

In tensor completion tasks, the traditional low-rank tensor decomposition models suffer from the laborious model selection problem due to their high model sensitivity. In particular, for tensor ring (TR) decomposition, the number of model…

机器学习 · 计算机科学 2018-12-03 Longhao Yuan , Chao Li , Danilo Mandic , Jianting Cao , Qibin Zhao

Despite their success, kernel methods suffer from a massive computational cost in practice. In this paper, in lieu of commonly used kernel expansion with respect to $N$ inputs, we develop a novel optimal design maximizing the entropy among…

机器学习 · 计算机科学 2020-02-12 Liang Ding , Rui Tuo , Shahin Shahrampour

Gradient descent method, as one of the major methods in numerical optimization, is the key ingredient in many machine learning algorithms. As one of the most fundamental way to solve the optimization problems, it promises the function value…

量子物理 · 物理学 2021-02-01 Keren Li , Shijie Wei , Feihao Zhang , Pan Gao , Zengrong Zhou , Tao Xin , Xiaoting Wang , Guilu Long

Coupled tensor decomposition reveals the joint data structure by incorporating priori knowledge that come from the latent coupled factors. The tensor ring (TR) decomposition is invariant under the permutation of tensors with different mode…

机器学习 · 计算机科学 2020-11-10 Huyan Huang , Yipeng Liu , Ce Zhu

For a practical quantum key distribution (QKD) system, parameter optimization - the choice of intensities and probabilities of sending them - is a crucial step in gaining optimal performance, especially when one realistically considers…

量子物理 · 物理学 2020-01-01 Wenyuan Wang , Hoi-Kwong Lo

Model compression is a crucial part of deploying neural networks (NNs), especially when the memory and storage of computing devices are limited in many applications. This paper focuses on two model compression techniques: low-rank…

机器学习 · 计算机科学 2024-08-16 Chenyang Li , Jihoon Chung , Mengnan Du , Haimin Wang , Xianlian Zhou , Bo Shen

We investigate a novel approach to approximate tensor-network contraction via the exact, matrix-free decomposition of full tensor-networks. We study this method as a means to eliminate the propagation of error in the approximation of…

化学物理 · 物理学 2025-06-23 Karl Pierce

The state-of-the-art dimensionality reduction approaches largely rely on complicated optimization procedures. On the other hand, closed-form approaches requiring merely eigen-decomposition do not have enough sophistication and nonlinearity.…

机器学习 · 计算机科学 2023-08-14 Chengrui Li , Anqi Wu

We investigate how to train kernel approximation methods that generalize well under a memory budget. Building on recent theoretical work, we define a measure of kernel approximation error which we find to be more predictive of the empirical…

机器学习 · 计算机科学 2019-03-21 Jian Zhang , Avner May , Tri Dao , Christopher Ré

Kernel method in machine learning consists of encoding input data into a vector in a Hilbert space called the feature space and modeling the target function as a linear map on the feature space. Given a cost function, computing such an…

量子物理 · 物理学 2022-10-18 Salman Beigi

Deep Click-Through Rate (CTR) prediction models play an important role in modern industrial recommendation scenarios. However, high memory overhead and computational costs limit their deployment in resource-constrained environments.…

信息检索 · 计算机科学 2024-06-12 Hao Yu , Minghao Fu , Jiandong Ding , Yusheng Zhou , Jianxin Wu

Kernel power $k$-means (KPKM) leverages a family of means to mitigate local minima issues in kernel $k$-means. However, KPKM faces two key limitations: (1) the computational burden of the full kernel matrix restricts its use on extensive…

机器学习 · 计算机科学 2025-11-14 Yixi Chen , Weixuan Liang , Tianrui Liu , Jun-Jie Huang , Ao Li , Xueling Zhu , Xinwang Liu

The convolution potential arises in a wide variety of application areas, and its efficient and accurate evaluation encounters three challenges: singularity, nonlocality and anisotropy. We introduce a fast algorithm based on a far-field…

数值分析 · 数学 2025-04-29 Xin Liu , Yong Zhang

We establish rigorous error bounds for prime counting using a truncated Gaussian (TG) kernel in the explicit formula framework. Our main theorem proves that the approximation error remains globally below 1/2 for all sufficiently large…

数论 · 数学 2025-07-01 Bugra Kilictas , Faruk Alpay

Kernel approximation with exponentials is useful in many problems with convolution quadrature and particle interactions such as integral-differential equations, molecular dynamics and machine learning. This paper proposes a weighted…

计算物理 · 物理学 2025-05-07 Yuanshen Lin , Zhenli Xu , Yusu Zhang , Qi Zhou

We introduce the concept of compressed convolution, a technique to convolve a given data set with a large number of non-orthogonal kernels. In typical applications our technique drastically reduces the effective number of computations. The…

天体物理仪器与方法 · 物理学 2014-01-08 F. Elsner , B. D. Wandelt

We propose DepthTCM, a physics-aware end-to-end framework for depth map compression. In our framework of DepthTCM, the high-bit depth map is first converted to a conventional 3-channel image representation losslessly using a method inspired…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Young-Seo Chang , Yatong An , Jae-Sang Hyun

Over the last two decades, several fast, robust, and high-order accurate methods have been developed for solving the Poisson equation in complicated geometry using potential theory. In this approach, rather than discretizing the partial…

数值分析 · 数学 2024-09-19 Fredrik Fryklund , Leslie Greengard , Shidong Jiang , Samuel Potter