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We develop novel methods to compute auto-correlation functions, or power spectral densities, for chaotic dynamical systems generated by an inverse method whose starting point is an invariant distribution and a two-form. In general, the…

混沌动力学 · 物理学 2008-09-02 Gerald Guralnik , Zachary Guralnik , Cengiz Pehlevan

This work deals with the generation of theoretical correlation matrices with specific sparsity patterns, associated to graph structures. We present a novel approach based on convex optimization, offering greater flexibility compared to…

信号处理 · 电气工程与系统科学 2025-02-26 Ali Fakhar , Kévin Polisano , Irène Gannaz , Sophie Achard

Multi-label classification is an important yet challenging task in natural language processing. It is more complex than single-label classification in that the labels tend to be correlated. Existing methods tend to ignore the correlations…

计算与语言 · 计算机科学 2018-06-18 Pengcheng Yang , Xu Sun , Wei Li , Shuming Ma , Wei Wu , Houfeng Wang

Many high dimensional integrals can be reduced to the problem of finding the relative measures of two sets. Often one set will be exponentially larger than the other, making it difficult to compare the sizes. A standard method of dealing…

概率论 · 数学 2011-12-19 Mark Huber , Sarah Schott

Motivated by the importance ascribed to correlations in random matrices used to model phenomena in various scientific disciplines, we report how algebraic correlations between matrix elements affect the eigenvalue statistics and spectral…

统计力学 · 物理学 2026-04-27 Abbas Ali Saberi , Roderich Moessner

Sequential models like recurrent neural networks and transformers have become standard for probabilistic multivariate time series forecasting across various domains. Despite their strengths, they struggle with capturing high-dimensional…

机器学习 · 计算机科学 2024-10-07 Yu Chen , Marin Biloš , Sarthak Mittal , Wei Deng , Kashif Rasul , Anderson Schneider

Random graph models are a recurring tool-of-the-trade for studying network structural properties and benchmarking community detection and other network algorithms. Moreover, they serve as test-bed generators for studying diffusion and…

物理与社会 · 物理学 2021-02-16 Dario Fasino , Arianna Tonetto , Francesco Tudisco

Dynamical processes on complex networks such as information propagation, innovation diffusion, cascading failures or epidemic spreading are highly affected by their underlying topologies as characterized by, for instance, degree-degree…

数据分析、统计与概率 · 物理学 2013-03-05 Mathias Raschke , Markus Schläpfer , Konstantinos Trantopoulos

A new method for analyzing the morphological features of point patterns is presented. The method is taken from the study of molecular liquids, where it has been introduced for making a statistical description of anisotropic distributions.…

天体物理学 · 物理学 2007-05-23 R. Valdarnini

The aim of this paper is to describe new statistical methods for determination of the correlations among and distributions of physical parameters from a multivariate data with general and arbitrary truncations and selection biases. These…

天体物理学 · 物理学 2007-05-23 Vahe' Petrosian

The path tracing method generates incoherent rays by randomly sampling directions. This randomness makes it unsuitable for modern processor architectures that rely on coherence to achieve optimal performance. Many efforts have been made to…

图形学 · 计算机科学 2023-10-12 Fengqi Liu , Zaonan Tan , Weilai Xiang , Chenhao Lu , Dan Li , Xu Gong , Yulong Shi , Songnan Shi , Qilong Kou , Bo Hu

Large language models augmented with task-relevant documents have demonstrated impressive performance on knowledge-intensive tasks. However, regarding how to obtain effective documents, the existing methods are mainly divided into two…

计算与语言 · 计算机科学 2023-10-10 Zhangyin Feng , Xiaocheng Feng , Dezhi Zhao , Maojin Yang , Bing Qin

The complexity of human interactions with social and natural phenomena is mirrored in the way we describe our experiences through natural language. In order to retain and convey such a high dimensional information, the statistical…

数据分析、统计与概率 · 物理学 2013-04-09 Eduardo G. Altmann , Giampaolo Cristadoro , Mirko Degli Esposti

We formulate conditions for convergence of Laws of Large Numbers and show its links with of the parts of mathematical analysis such as summation theory, convergence of orthogonal series. We present also applications of the Law of Large…

概率论 · 数学 2018-09-07 Paweł J. Szabłowski

We propose a new iterative algorithm for generating a subset of eigenvalues and eigenvectors of large matrices which generalizes the method of optimal relaxations. We also give convergence criteria for the iterative process, investigate its…

综合物理 · 物理学 2009-11-07 F. Andreozzi , A. Porrino , N. Lo Iudice

We present a method that uses a text-to-image model to generate consistent content across multiple image scales, enabling extreme semantic zooms into a scene, e.g., ranging from a wide-angle landscape view of a forest to a macro shot of an…

计算机视觉与模式识别 · 计算机科学 2024-05-24 Xiaojuan Wang , Janne Kontkanen , Brian Curless , Steve Seitz , Ira Kemelmacher , Ben Mildenhall , Pratul Srinivasan , Dor Verbin , Aleksander Holynski

In this paper, we study automatic keyphrase generation. Although conventional approaches to this task show promising results, they neglect correlation among keyphrases, resulting in duplication and coverage issues. To solve these problems,…

计算与语言 · 计算机科学 2018-08-23 Jun Chen , Xiaoming Zhang , Yu Wu , Zhao Yan , Zhoujun Li

In this article, we discuss the numerical solution of diffusion equations on random surfaces within the isogeometric framework. We describe in detail, how diffusion problems on random surfaces can be modelled and how quantities of interest…

数值分析 · 数学 2022-04-28 Wei Huang , Michael Multerer

We study the generation of strongly correlated photons by coupling an atom to photonic quantum fields in a one-dimensional waveguide. Specifically, we consider a three-level or four-level system for the atom. Photon-photon bound states…

量子物理 · 物理学 2012-06-26 Huaixiu Zheng , Daniel J. Gauthier , Harold U. Baranger

We analyze the signum-generation method for creating random dichotomic sequences with prescribed correlation properties. The method is based on a binary mapping of the convolution of continuous random numbers with some function originated…

无序系统与神经网络 · 物理学 2012-05-15 S. S. Apostolov , F. M. Izrailev , N. M. Makarov , Z. A. Mayzelis , S. S. Melnyk , O. V. Usatenko