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We study the stochastic linear bandit problem with multiple arms over $T$ rounds, where the covariate dimension $d$ may exceed $T$, but each arm-specific parameter vector is $s$-sparse. We begin by analyzing the sequential estimation…

统计理论 · 数学 2025-05-26 Jingyu Liu , Yanglei Song

We present an algorithm to compute best least-squares approximations of discrete real-valued functions by first-degree splines (broken lines) with free knots. We demonstrate that the algorithm delivers after a finite number of steps a…

数值分析 · 数学 2017-04-20 Ludwig J. Cromme , Jens Kunath , Andreas Krebs

This study presents a comprehensive statistical analysis of criminal complaint data from the New York City Police Department (NYPD) spanning 47 years (1963-2025) [1]. Using a dataset of 438,556 complaint records, we employed exploratory…

物理与社会 · 物理学 2026-02-03 Fnu Gaurav

In the era of big data, an ever-growing volume of information is recorded, either continuously over time or sporadically, at distinct time intervals. Functional Data Analysis (FDA) stands at the cutting edge of this data revolution,…

统计方法学 · 统计学 2024-10-21 Anna De Magistris , Valentina De Simone , Elvira Romano , Gerardo Toraldo

This survey paper presents a comprehensive analysis of crime prediction methodologies, exploring the various techniques and technologies utilized in this area. The paper covers the statistical methods, machine learning algorithms, and deep…

机器学习 · 计算机科学 2024-03-05 Kamal Taha

Multi-armed bandit models have proven to be useful in modeling many real world problems in the areas of control and sequential decision making with partial information. However, in many scenarios, such as those prevalent in healthcare and…

最优化与控制 · 数学 2024-08-27 Qinyang He , Yonatan Mintz

It is quite evident that majority of the population lives in urban area today than in any time of the human history. This trend seems to increase in coming years. A study [5] says that nearly 80.7% of total population in USA stays in urban…

应用统计 · 统计学 2018-10-31 Saroj Kumar Dash , Ilya Safro , Ravisutha Sakrepatna Srinivasamurthy

We present an estimation procedure for nonlinear mixed-effects models in which the population trajectory is represented by penalized splines and adapted to individuals via subject-specific transformation parameters. By exploiting the mixed…

统计方法学 · 统计学 2026-03-13 Matteo D'Alessandro , Magne Thoresen , Øystein Sørensen

Spline basis exploration via Bayesian model selection is a widely employed strategy for determining the optimal set of basis terms in nonparametric regression. However, despite its widespread use, this approach often encounters performance…

统计方法学 · 统计学 2025-04-09 Sunwoo Lim , Sihyeon Pyeon , Seonghyun Jeong

Quantile regression is a powerful tool capable of offering a richer view of the data as compared to least-squares regression. Quantile regression is typically performed individually on a few quantiles or a grid of quantiles without…

统计方法学 · 统计学 2026-03-26 Ta-Hsin Li , Nimrod Megiddo

This paper gives a comprehensive treatment of the convergence rates of penalized spline estimators for simultaneously estimating several leading principal component functions, when the functional data is sparsely observed. The penalized…

统计理论 · 数学 2024-02-09 Shiyuan He , Jianhua Z. Huang , Kejun He

This study uses deep-learning models to predict city partition crime counts on specific days. It helps police enhance surveillance, gather intelligence, and proactively prevent crimes. We formulate crime count prediction as a spatiotemporal…

机器学习 · 计算机科学 2025-02-14 Li Mao , Wei Du , Shuo Wen , Qi Li , Tong Zhang , Wei Zhong

In multivariate spline regression, the number and locations of knots influence the performance and interpretability significantly. However, due to non-differentiability and varying dimensions, there is no desirable frequentist method to…

统计方法学 · 统计学 2024-05-24 Junhui He , Ying Yang , Jian Kang

Traditional crime prediction models based on census data are limited, as they fail to capture the complexity and dynamics of human activity. With the rise of ubiquitous computing, there is the opportunity to improve such models with data…

计算机与社会 · 计算机科学 2018-06-06 Cristina Kadar , Irena Pletikosa

Identification of unexpectedly high values in a time series is useful for epidemiologists, economists, and other social scientists interested in the effect of an exposure spike on an outcome variable. However, the best method to identify…

应用统计 · 统计学 2018-01-25 Dana E. Goin , Jennifer Ahern

Recent focus on robustness to adversarial attacks for deep neural networks produced a large variety of algorithms for training robust models. Most of the effective algorithms involve solving the min-max optimization problem for training…

机器学习 · 计算机科学 2021-03-03 Yasaman Esfandiari , Aditya Balu , Keivan Ebrahimi , Umesh Vaidya , Nicola Elia , Soumik Sarkar

Penalized quantile regression (QR) is widely used for studying the relationship between a response variable and a set of predictors under data heterogeneity in high-dimensional settings. Compared to penalized least squares, scalable…

统计方法学 · 统计学 2022-05-06 Rebeka Man , Xiaoou Pan , Kean Ming Tan , Wen-Xin Zhou

We consider fitting a bivariate spline regression model to data using a weighted least-squares cost function, with weights that sum to one to form a discrete probability distribution. By applying the principle of maximum entropy, the weight…

统计方法学 · 统计学 2025-08-05 Pierluigi Amodio , Luigi Brugnano , Felice Iavernaro

The analysis of online least squares estimation is at the heart of many stochastic sequential decision making problems. We employ tools from the self-normalized processes to provide a simple and self-contained proof of a tail bound of a…

人工智能 · 计算机科学 2011-02-15 Yasin Abbasi-Yadkori , David Pal , Csaba Szepesvari

The B-spline copula function is defined by a linear combination of elements of the normalized B-spline basis. We develop a modified EM algorithm, to maximize the penalized pseudo-likelihood function, wherein we use the smoothly clipped…

统计方法学 · 统计学 2024-12-17 Xiaoling Dou , Satoshi Kuriki , Gwo Dong Lin , Donald Richards