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The classic integrated conditional moment test is a promising method for testing regression model misspecification. However, it severely suffers from the curse of dimensionality. To extend it to handle the testing problem for parametric…

统计理论 · 数学 2020-05-26 Falong Tan , Lixing Zhu

Two recently introduced model based bias corrected estimators for proportion of true null hypotheses ($\pi_0$) under multiple hypotheses testing scenario have been restructured for exponentially distributed random observations available for…

统计理论 · 数学 2020-07-28 Aniket Biswas , Gaurangadeb Chattopadhyay , Aditya Chatterjee

We study two schemes for a time-fractional Fokker-Planck equation with space- and time-dependent forcing in one space dimension. The first scheme is continuous in time and is discretized in space using a piecewise-linear Galerkin finite…

数值分析 · 数学 2016-10-24 Kim Ngan Le , William McLean , Kassem Mustapha

Motivated by fractional derivative models in viscoelasticity, a class of semilinear stochastic Volterra integro-differential equations, and their deterministic counterparts, are considered. A generalized exponential Euler method, named here…

数值分析 · 数学 2020-01-17 Mihály Kovács , Stig Larsson , Fardin Saedpanah

We obtain computational hardness results for f-vectors of polytopes by exhibiting reductions of the problems DIVISOR and SEMI-PRIME TESTABILITY to problems on f-vectors of polytopes. Further, we show that the corresponding problems for…

组合数学 · 数学 2021-09-20 Eran Nevo

An easy-to-use and effective formula for stability testing of a system with fractional-delay characteristic equation in the general form of $\Delta(s)=P_0(s)+\sum_{i=1}^N P_i(s)\exp(-\zeta_i s^{\beta_i}) =0$, where $P_i(s)$ ($i=0,..., N$)…

动力系统 · 数学 2013-02-05 Farshad Merrikh-Bayat

Abramo and D'Angelo (in press) doubt the validity of established size-independent indicators measuring citation impact and plead in favor of measuring scientific efficiency (by using the Fractional Scientific Strength indicator). This note…

数字图书馆 · 计算机科学 2017-07-04 Lutz Bornmann , Robin Haunschild

We introduce a general notion of fractional (noninteger) derivative for functions defined on arbitrary time scales. The basic tools for the time-scale fractional calculus (fractional differentiation and fractional integration) are then…

经典分析与常微分方程 · 数学 2014-12-05 Nadia Benkhettou , Artur M. C. Brito da Cruz , Delfim F. M. Torres

In this paper we propose a computationally efficient multiple hypothesis testing procedure for persistent homology. The computational efficiency of our procedure is based on the observation that one can empirically simulate a null…

计算几何 · 计算机科学 2022-08-29 Mikael Vejdemo-Johansson , Sayan Mukherjee

Systematic overview of Newton-Schulz and Durand iterations with convergence analysis and factorizations is presented in the chronological sequence in unified framework. Practical recommendations for the choice of the order and…

最优化与控制 · 数学 2022-08-09 Alexander Stotsky

One-dimensional detrended fluctuation analysis (1D DFA) and multifractal detrended fluctuation analysis (1D MF-DFA) are widely used in the scaling analysis of fractal and multifractal time series because of being accurate and easy to…

综合物理 · 物理学 2007-05-23 Gao-Feng Gu , Wei-Xing Zhou

A novel model of systematic errors for the regression of Poisson data is applied to hypothesis testing of nested model components with the introduction of a generalization of the $\Delta C$ statistic that applies in the presence of…

天体物理仪器与方法 · 物理学 2025-03-24 M. Bonamente , D. Zimmerman , Y. Chen

In this paper we introduce and study three classes of fractional periodic processes. An application to ring polymers is investigated. We obtain a closed analytic expressions for the form factors, the Debye functions and their asymptotic…

数学物理 · 物理学 2020-05-20 Wolfgang Bock , Jose Luis da Silva , Ludwig Streit

This work is an extension of previous work by Alazah et al. [M. Alazah, S. N. Chandler-Wilde, and S. La Porte, Numerische Mathematik, 128(4):635-661, 2014]. We split the computation of the Fresnel Integrals into 3 cases: a truncated Taylor…

数值分析 · 数学 2020-11-24 Alexandru Ionut , James C. Hateley

Computing accurate estimates of the Fourier transform of analog signals from discrete data points is important in many fields of science and engineering. The conventional approach of performing the discrete Fourier transform of the data…

机器学习 · 统计学 2017-12-08 Luca Ambrogioni , Eric Maris

Residual marked empirical process-based tests are commonly used in regression models. However, they suffer from data sparseness in high-dimensional space when there are many covariates. This paper has three purposes. First, we suggest a…

统计方法学 · 统计学 2015-10-27 Xuehu Zhu , Xu Guo , Lixing Zhu

An algorithm for calculating generalized fractal dimension of a time series using the general information function is presented. The algorithm is based on a strings sort technique and requires $O(N \log_2 N)$ computations. A rough estimate…

chao-dyn · 物理学 2009-10-31 Yosef Ashkenazy

Time Series Analysis has been given a great amount of study in which many useful tests were developed. The phenomenal work of Engle and Granger in 1987 and Johansen in 1988 has paved the way for the most commonly used cointegration tests so…

数值分析 · 数学 2025-09-10 Alvey Qianli Lin , Zhiwen Zhang

In this paper new tests for the independence of two high-dimensional vectors are investigated. We consider the case where the dimension of the vectors increases with the sample size and propose multivariate analysis of variance-type…

统计理论 · 数学 2023-04-19 Taras Bodnar , Holger Dette , Nestor Parolya

Functional panels are collections of functional time series, and arise often in the study of high frequency multivariate data. We develop a portmanteau style test to determine if the cross-sections of such a panel are independent and…

统计方法学 · 统计学 2016-07-12 Piotr Kokoszka , Matthew Reimherr , Nikolas Wölfing