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Optimal Transport (OT) has proven effective for domain adaptation (DA) by aligning distributions across domains with differing statistical properties. Building on the approach of Courty et al. (2016), who mapped source data to the target…

机器学习 · 统计学 2025-05-15 Brian Britos , Mathias Bourel

Stochastic variational inference (SVI) is emerging as the most promising candidate for scaling inference in Bayesian probabilistic models to large datasets. However, the performance of these methods has been assessed primarily in the…

机器学习 · 统计学 2015-06-29 Amar Shah , David A. Knowles , Zoubin Ghahramani

In this paper we consider an extension of the beta regression model proposed by Ferrari and Cribari-Neto (2004). We extend their model in two different ways, first, we let the regression structure be nonlinear, second, we allow a regression…

统计方法学 · 统计学 2009-10-24 Alexandre B. Simas , Wagner Barreto-Souza , Andréa V. Rocha

We propose a unified framework for likelihood-based regression modeling when the response variable has finite support. Our work is motivated by the fact that, in practice, observed data are discrete and bounded. The proposed methods assume…

统计方法学 · 统计学 2022-09-13 Karl Oskar Ekvall , Matteo Bottai

For high dimensional sparse linear regression problems, we propose a sequential convex relaxation algorithm (iSCRA-TL1) by solving inexactly a sequence of truncated $\ell_1$-norm regularized minimization problems, in which the working index…

统计理论 · 数学 2024-11-05 Shujun Bi , Yonghua Yang , Shaohua Pan

This paper investigates two environmental applications related to climate change, where observations consist of bounded counts. The binomial and beta-binomial (BB) models are commonly used for bounded count data, with the BB model offering…

In this paper we propose a wide class of truncated stochastic approximation procedures with moving random bounds. While we believe that the proposed class of procedures will find its way to a wider range of applications, the main motivation…

统计方法学 · 统计学 2012-05-04 Teo Sharia

We study stage-wise conservative linear stochastic bandits: an instance of bandit optimization, which accounts for (unknown) safety constraints that appear in applications such as online advertising and medical trials. At each stage, the…

机器学习 · 计算机科学 2020-10-02 Ahmadreza Moradipari , Christos Thrampoulidis , Mahnoosh Alizadeh

In this study, we delve into the Thresholding Linear Bandit (TLB) problem, a nuanced domain within stochastic Multi-Armed Bandit (MAB) problems, focusing on maximizing decision accuracy against a linearly defined threshold under resource…

机器学习 · 计算机科学 2024-03-12 Yun-Ang Wu , Yun-Da Tsai , Shou-De Lin

Implementation of spatial generalized linear models with a functional covariate can be accomplished through the use of a truncated basis expansion of the covariate process. In practice, one must select a truncation level for use. We compare…

统计方法学 · 统计学 2024-12-24 Sooran Kim , Mark S. Kaiser , Xiongtao Dai

Multi-label classification (MLC) refers to the problem of tagging a given instance with a set of relevant labels. Most existing MLC methods are based on the assumption that the correlation of two labels in each label pair is symmetric,…

机器学习 · 计算机科学 2024-10-04 Xingyu Zhao , Yuexuan An , Lei Qi , Xin Geng

Regression models to relate a scalar $Y$ to a functional predictor $X(t)$ are becoming increasingly common. Work in this area has concentrated on estimating a coefficient function, $\beta(t)$, with $Y$ related to $X(t)$ through…

统计理论 · 数学 2009-08-21 Gareth M. James , Jing Wang , Ji Zhu

Optimization is widely used in statistics, and often efficiently delivers point estimates on useful spaces involving structural constraints or combinatorial structure. To quantify uncertainty, Gibbs posterior exponentiates the negative loss…

统计方法学 · 统计学 2025-07-23 Cheng Zeng , Eleni Dilma , Jason Xu , Leo L Duan

Recent advances in domain adaptation establish that requiring a low risk on the source domain and equal feature marginals degrade the adaptation's performance. At the same time, empirical evidence shows that incorporating an unsupervised…

机器学习 · 计算机科学 2022-03-11 Sofien Dhouib , Setareh Maghsudi

In this paper, we study the Black-Litterman (BL) asset allocation model (Black and Litterman, 1990) under the hidden truncation skew-normal distribution (Arnold and Beaver, 2000). In particular, when returns are assumed to follow this skew…

投资组合管理 · 定量金融 2023-10-20 Jungjun Park , Andrew L. Nguyen

Balanced Singular Perturbation Approximation (SPA) is a model order reduction method for linear time-invariant systems that guarantees asymptotic stability and for which there exists an a priori error bound. In that respect, it is similar…

数值分析 · 数学 2023-03-10 Björn Liljegren-Sailer , Ion Victor Gosea

Interactions between actors are frequently represented using a network. The latent position model is widely used for analysing network data, whereby each actor is positioned in a latent space. Inferring the dimension of this space is…

统计方法学 · 统计学 2024-04-25 Xian Yao Gwee , Isobel Claire Gormley , Michael Fop

This paper develops a threshold regression model where an unknown relationship between two variables nonparametrically determines the threshold. We allow the observations to be cross-sectionally dependent so that the model can be applied to…

计量经济学 · 经济学 2021-01-29 Yoonseok Lee , Yulong Wang

Regression control charts are usually used to monitor variables of interest that are related to control variables. However, for fraction and/or proportion data, the use of standard regression control charts may not be adequate, since the…

统计方法学 · 统计学 2018-04-05 Fábio Mariano Bayer , Catia Michele Tondolo , Fernanda Maria Müller

This paper presents a new class of regression models for continuous data restricted to the interval $(0,1)$, such as rates and proportions. The proposed class of models assumes a beta distribution for the variable of interest with…

统计方法学 · 统计学 2017-02-02 Diego Ramos Canterle , Fábio Mariano Bayer