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In this paper we propose a computational framework for the investigation of the correlated motion between positive and negative ions exposed to the attraction of a bubble surface that mimics the (oscillating) cell membrane. The correlated…

The Ricker model was introduced in the context of managing fishing stocks. It is a discrete non-linear iterative model given by $N(t+1)=rN(t)\exp(-N(t))$ where $N(t)$ is the population at time $t$. The model treated in this paper includes a…

应用统计 · 统计学 2017-03-08 Laurie Davies

Recently, the Bayesian nonparametric approach in survival studies attracts much more attentions. Because of multi modality in survival data, the mixture models are very common in this field. One of the famous priors on Bayesian…

应用统计 · 统计学 2016-12-26 S. B. Hajjar , S. Khazaei

Recently, the emergence of pre-trained models (PTMs) has brought natural language processing (NLP) to a new era. In this survey, we provide a comprehensive review of PTMs for NLP. We first briefly introduce language representation learning…

计算与语言 · 计算机科学 2021-06-24 Xipeng Qiu , Tianxiang Sun , Yige Xu , Yunfan Shao , Ning Dai , Xuanjing Huang

The nominal transition systems (NTSs) of Parrow et al. describe the operational semantics of nominal process calculi. We study NTSs in terms of the nominal residual transition systems (NRTSs) that we introduce. We provide rule formats for…

计算机科学中的逻辑 · 计算机科学 2024-02-05 Luca Aceto , Ignacio Fábregas , Álvaro García-Pérez , Anna Ingólfsdóttir , Yolanda Ortega-Mallén

We investigate the errors in modeling the redshift-space distortion (RSD) effect at large linear scales, using data from the Millennium simulation. While standard theoretical templates, such as the Kaiser formula and the TNS method, could…

宇宙学与河外天体物理 · 物理学 2025-07-29 Hongxiang Chen , Jie Wang , Baojiu Li

A new three parameter natural extension of the Conway-Maxwell-Poisson (COM-Poisson) distribution is proposed. This distribution includes the recently proposed COM-Poisson type negative binomial (COM-NB) distribution [Chakraborty, S. and…

统计理论 · 数学 2015-09-02 Subrata Chakraborty , Tomoaki Imoto

The Posterior distribution of the Likelihood Ratio (PLR) is proposed by Dempster in 1974 for significance testing in the simple vs composite hypotheses case. In this hypotheses test case, classical frequentist and Bayesian hypotheses tests…

数据分析、统计与概率 · 物理学 2014-06-05 I. Smith , A. Ferrari

Training machine learning and statistical models often involves optimizing a data-driven risk criterion. The risk is usually computed with respect to the empirical data distribution, but this may result in poor and unstable out-of-sample…

机器学习 · 统计学 2024-11-11 Nicola Bariletto , Nhat Ho

Matrix completion focuses on recovering missing or incomplete information in matrices. This problem arises in various applications, including image processing and network analysis. Previous research proposed Poisson matrix completion for…

机器学习 · 计算机科学 2024-08-30 Yu Lu , Kevin Bui , Roummel F. Marcia

There is currently a gap in theory for point patterns that lie on the surface of objects, with researchers focusing on patterns that lie in a Euclidean space, typically planar and spatial data. Methodology for planar and spatial data thus…

统计理论 · 数学 2020-02-11 Scott Ward , Edward A. K. Cohen , Niall Adams

Neural Networks (NNs) have been widely {used in supervised learning} due to their ability to model complex nonlinear patterns, often presented in high-dimensional data such as images and text. However, traditional NNs often lack the ability…

人工智能 · 计算机科学 2022-10-18 Jiayu Huang , Yutian Pang , Yongming Liu , Hao Yan

We formulate natural gradient variational inference (VI), expectation propagation (EP), and posterior linearisation (PL) as extensions of Newton's method for optimising the parameters of a Bayesian posterior distribution. This viewpoint…

机器学习 · 统计学 2022-12-07 William J. Wilkinson , Simo Särkkä , Arno Solin

Three extensions and reinterpretations of nonclassical probabilities are reviewed. (i) We propose to generalize the probability axiom of quantum mechanics to self-adjoint positive operators of trace one. Furthermore, we discuss the…

量子物理 · 物理学 2007-05-23 Karl Svozil

Neural networks are the cornerstone of modern machine learning, yet can be difficult to interpret, give overconfident predictions and are vulnerable to adversarial attacks. Bayesian neural networks (BNNs) provide some alleviation of these…

机器学习 · 统计学 2026-02-24 August Arnstad , Leiv Rønneberg , Geir Storvik

Stress testing, and in particular, reverse stress testing, is a prominent exercise in risk management practice. Reverse stress testing, in contrast to (forward) stress testing, aims to find an alternative but plausible model such that under…

风险管理 · 定量金融 2023-10-03 Emma Kroell , Silvana M. Pesenti , Sebastian Jaimungal

Constrained learning is prevalent in many statistical tasks. Recent work proposes distance-to-set penalties to derive estimators under general constraints that can be specified as sets, but focuses on obtaining point estimates that do not…

统计方法学 · 统计学 2022-10-25 Rick Presman , Jason Xu

Bayesian inference requires determining the posterior distribution, a task that becomes particularly challenging when the dimension of the parameter space is large and unknown. This limitation arises in many physics problems, such as…

We develop dependent hierarchical normalized random measures and apply them to dynamic topic modeling. The dependency arises via superposition, subsampling and point transition on the underlying Poisson processes of these measures. The…

机器学习 · 计算机科学 2012-06-22 Changyou Chen , Nan Ding , Wray Buntine

Constructing valid inferential methods for constrained parameters in normal and Poisson distributions represents two fundamental and important problems in applied statistics, for which there is currently no unified framework for statistical…

统计方法学 · 统计学 2026-04-13 Hezhi Lu , Qijun Wu