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We study maximum likelihood estimation in log-linear models under conditional Poisson sampling schemes. We derive necessary and sufficient conditions for existence of the maximum likelihood estimator (MLE) of the model parameters and…

统计理论 · 数学 2012-07-24 Stephen E. Fienberg , Alessandro Rinaldo

We study the maximum likelihood estimation (MLE) in the multivariate deviated model where the data are generated from the density function $(1-\lambda^{\ast})h_{0}(x)+\lambda^{\ast}f(x|\mu^{\ast}, \Sigma^{\ast})$ in which $h_{0}$ is a known…

统计理论 · 数学 2023-10-31 Dat Do , Huy Nguyen , Khai Nguyen , Nhat Ho

We study the distribution of the maximum likelihood estimate (MLE) in high-dimensional logistic models, extending the recent results from Sur (2019) to the case where the Gaussian covariates may have an arbitrary covariance structure. We…

统计理论 · 数学 2023-01-05 Qian Zhao , Pragya Sur , Emmanuel J. Candès

With the multiallelic parent-independent mutation-drift model, the equilibrium proportions of alleles are known to be Dirichlet distributed. A special case is the biallelic model, in which the proportions are beta distributed. A sample…

种群与进化 · 定量生物学 2019-05-07 Claus Vogl , Lynette Caitlin Mikula

We consider a one dimensional sub-ballistic random walk evolving in a parametric i.i.d. random environment. We study the asymptotic properties of the maximum likelihood estimator (MLE) of the parameter based on a single observation of the…

概率论 · 数学 2014-05-13 Mikael Falconnet , Dasha Loukianova , Arnaud Gloter

The primary objective of this scholarly work is to develop two estimation procedures - maximum likelihood estimator (MLE) and method of trimmed moments (MTM) - for the mean and variance of lognormal insurance payment severity data sets…

统计方法学 · 统计学 2024-02-22 Chudamani Poudyal

Maximum likelihood estimation is a common method of estimating the parameters of the probability distribution from a given sample. This paper aims to introduce the maximum likelihood estimation in the framework of sublinear expectation. We…

概率论 · 数学 2023-01-16 Xinpeng Li , Yue Liu , Jiaquan Lu

Since the recent study (Krichene and Rendle 2020) done by Krichene and Rendle on the sampling-based top-k evaluation metric for recommendation, there has been a lot of debates on the validity of using sampling to evaluate recommendation…

信息检索 · 计算机科学 2021-03-04 Ruoming Jin , Dong Li , Benjamin Mudrak , Jing Gao , Zhi Liu

We consider goodness-of-fit tests of symmetric stable distributions based on weighted integrals of the squared distance between the empirical characteristic function of the standardized data and the characteristic function of the standard…

统计理论 · 数学 2009-01-06 Muneya Matsui , Akimichi Takemura

We analyze the exponential stability of distributed parameter systems. The system we consider is described by a coupled parabolic partial differential equation with spatially varying coefficients. We approximate the coefficients by…

最优化与控制 · 数学 2019-05-21 Masashi Wakaiki

Let $f(y|\theta), \; \theta \in \Omega$ be a parametric family, $\eta(\theta)$ a given function, and $G$ an unknown mixing distribution. It is desired to estimate $E_G (\eta(\theta))\equiv \eta_G$ based on independent observations…

统计理论 · 数学 2022-07-29 Eitan Greenshtein , Ya'acov Ritov

The finite Gamma mixture model is often used to describe randomness in income data, insurance data, and data from other applications. The popular likelihood approach, however, does not work for this model because the likelihood function is…

统计理论 · 数学 2020-11-10 Mingxing He , Jiahua Chen

We consider the parameter estimation problem of a probabilistic generative model prescribed using a natural exponential family of distributions. For this problem, the typical maximum likelihood estimator usually overfits under limited…

机器学习 · 统计学 2020-10-13 Viet Anh Nguyen , Xuhui Zhang , Jose Blanchet , Angelos Georghiou

This paper deals with Elliptical Wishart distributions - which generalize the Wishart distribution - in the context of signal processing and machine learning. Two algorithms to compute the maximum likelihood estimator (MLE) are proposed: a…

机器学习 · 统计学 2024-11-06 Imen Ayadi , Florent Bouchard , Frédéric Pascal

We consider the estimation of a scalar parameter, when two estimators are available. The first is always consistent. The second is inconsistent in general, but has a smaller asymptotic variance than the first, and may be consistent if an…

统计理论 · 数学 2020-06-29 Clément de Chaisemartin , Xavier D'Haultfœuille

This paper deals with optimally-robust parameter estimation in generalized Pareto distributions (GPDs). These arise naturally in many situations where one is interested in the behavior of extreme events as motivated by the…

统计金融 · 定量金融 2015-03-17 Peter Ruckdeschel , Nataliya Horbenko

In a mixture of linear regression model, the regression coefficients are treated as random vectors that may follow either a continuous or discrete distribution. We propose two Expectation-Maximization (EM) algorithms to estimate this prior…

统计方法学 · 统计学 2025-10-17 Andrew Welbaum , Wanli Qiao

We provide a general and rigorous proof for the strong consistency of maximum likelihood estimators of the cumulative distribution function of the mixing distribution and structural parameter under finite mixtures of location-scale…

统计理论 · 数学 2025-07-21 Guanfu Liu , Pengfei Li , Yukun Liu , Xiaolong Pu

We study the bias and the mean-squared error of the maximum likelihood estimators (MLE) of parameters associated with a two-parameter mean-reverting process for a finite time $T$. Using the likelihood ratio process, we derive the…

统计理论 · 数学 2025-04-01 Jun S. Han , Nino Kordzakhia

We study the problem of signal source localization using received signal strength measurements. We begin by presenting verifiable geometric conditions for sensor deployment that ensure the model's asymptotic localizability. Then we…

系统与控制 · 电气工程与系统科学 2025-05-20 Shenghua Hu , Guangyang Zeng , Wenchao Xue , Haitao Fang , Junfeng Wu , Biqiang Mu