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We examine the effect of the decoherence-induced reduction of correlation length on a one-dimensional scattering problem by solving numerically the evolution equation for the Wigner function with decoherence proposed in [L. Barletti, G.…

量子物理 · 物理学 2021-10-20 l. Barletti , P. Bordone , L. Demeio , E. Giovannini

Continuous-variables (CV) quantum optics is a natural formalism for neural networks (NNs) due to its ability to reproduce the information processing of such trainable interconnected systems. In quantum optics, Gaussian operators induce…

This paper proves a theorem about bounding orbits of a time dependent dynamical system. The maps that are involved are examples in convex dynamics, by which we mean the dynamics of piecewise isometries where the pieces are convex. The…

动力系统 · 数学 2007-05-23 R. L. Adler , B. Kitchens , M. Martens , C. Pugh , M. Shub , C. Tresser

In recent years, several models using Quaternion-Valued Convolutional Neural Networks (QCNNs) for different problems have been proposed. Although the definition of the quaternion convolution layer is the same, there are different…

机器学习 · 计算机科学 2024-09-04 Gerardo Altamirano-Gómez , Carlos Gershenson

Invertible image representation methods (transforms) are routinely employed as low-level image processing operations based on which feature extraction and recognition algorithms are developed. Most transforms in current use (e.g. Fourier,…

计算机视觉与模式识别 · 计算机科学 2016-01-20 Soheil Kolouri , Se Rim Park , Gustavo K. Rohde

We investigate the Wigner distributions of $\bar{u}$ and $\bar{d}$ quarks in a proton using the overlap representation within the light cone formalism. Using the light cone wave functions which are obtained from the baryon-meson fluctuation…

高能物理 - 唯象学 · 物理学 2024-01-30 Xiaoyan Luan , Zhun Lu

Quantum harmonic analysis on phase space is shown to be linked with localization operators. The convolution between operators and the convolution between a function and an operator provide a conceptual framework for the theory of…

泛函分析 · 数学 2017-10-17 Franz Luef , Eirik Skrettingland

We show that the core reasons that complex and hypercomplex valued neural networks offer improvements over their real-valued counterparts is the weight sharing mechanism and treating multidimensional data as a single entity. Their algebra…

神经与进化计算 · 计算机科学 2020-09-10 Chase J Gaudet , Anthony S Maida

We study matrix forms of quaternionic versions of the Fourier Transform and Convolution operations. Quaternions offer a powerful representation unit, however they are related to difficulties in their use that stem foremost from…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Giorgos Sfikas , George Retsinas

A wavelet scattering network computes a translation invariant image representation, which is stable to deformations and preserves high frequency information for classification. It cascades wavelet transform convolutions with non-linear…

计算机视觉与模式识别 · 计算机科学 2012-03-09 Joan Bruna , Stéphane Mallat

Object orientation provides a flexible framework for the implementation of the convolution of arbitrary distributions of real-valued random variables. We discuss an algorithm which is based on the discrete Fourier transformation (DFT) and…

统计计算 · 统计学 2014-08-07 Peter Ruckdeschel , Matthias Kohl

Despite the recent advances in optical character recognition (OCR), mathematical expressions still face a great challenge to recognize due to their two-dimensional graphical layout. In this paper, we propose a convolutional sequence…

计算机视觉与模式识别 · 计算机科学 2020-12-24 Zuoyu Yan , Xiaode Zhang , Liangcai Gao , Ke Yuan , Zhi Tang

Learned image compression (LIC) has recently made significant progress, surpassing traditional methods. However, most LIC approaches operate mainly in the spatial domain and lack mechanisms for reducing frequency-domain correlations. To…

计算机视觉与模式识别 · 计算机科学 2025-04-08 Haisheng Fu , Jie Liang , Feng Liang , Zhenman Fang , Guohe Zhang , Jingning Han

A flexible transform-based tensor product named $\star_{{\rm{QT}}}$-product for $L$th-order ($L\geq 3$) quaternion tensors is proposed. Based on the $\star_{{\rm{QT}}}$-product, we define the corresponding singular value decomposition named…

数值分析 · 数学 2021-12-17 Jifei Miao , Kit Ian Kou

We have considered the ballistic propagation of the 2D electron Wigner distribution, which is excited by an ultrashort optical pulse from a short-range impurity into the first quantized subband of a selectively-doped heterostructure with…

其他凝聚态物理 · 物理学 2009-11-13 F. T. Vasko , A. Hernandez-Cabrera , P. Aceituno

Recently, Grosse and Lechner introduced a novel deformation procedure for non-interacting quantum field theories, giving rise to interesting examples of wedge-localized quantum fields with a non-trivial scattering matrix. In the present…

数学物理 · 物理学 2017-08-23 Detlev Buchholz , Stephen J. Summers

We report diffusion quantum Monte Carlo calculations of three-dimensional Wigner crystals in the density range r_s=100-150. We have tested different types of orbital for use in the approximate wave functions but none improve upon the simple…

强关联电子 · 物理学 2008-01-03 N. D. Drummond , Z. Radnai , J. R. Trail , M. D. Towler , R. J. Needs

Vision-and-Language Pre-training (VLP) has improved performance on various joint vision-and-language downstream tasks. Current approaches to VLP heavily rely on image feature extraction processes, most of which involve region supervision…

机器学习 · 统计学 2021-06-11 Wonjae Kim , Bokyung Son , Ildoo Kim

This paper aims to develop an innovative method for harmonic analysis by introducing the linear canonical Jacobi-Dunkl transform (LCJDT), which integrates both the Jacobi-Dunkl transform (JDT) and the linear canonical transform (LCT).…

综合数学 · 数学 2024-10-10 Rong-Qian Linghua , Bing-Zhao Li

Image classification is a major application domain for conventional deep learning (DL). Quantum machine learning (QML) has the potential to revolutionize image classification. In any typical DL-based image classification, we use…

计算机视觉与模式识别 · 计算机科学 2021-09-21 Mahabubul Alam , Satwik Kundu , Rasit Onur Topaloglu , Swaroop Ghosh