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As deep learning-based computer vision algorithms continue to advance the state of the art, their robustness to real-world data continues to be an issue, making it difficult to bring an algorithm from the lab to the real world.…

计算机视觉与模式识别 · 计算机科学 2024-09-10 Michael Smith , Frank Ferrie

Urban tree biodiversity is critical for climate resilience, ecological stability, and livability in cities, yet most municipalities lack detailed knowledge of their canopies. Field-based inventories provide reliable estimates of Shannon and…

计算机视觉与模式识别 · 计算机科学 2025-08-26 Diaa Addeen Abuhani , Marco Seccaroni , Martina Mazzarello , Imran Zualkernan , Fabio Duarte , Carlo Ratti

We provide a general methodology for unbiased estimation for intractable stochastic models. We consider situations where the target distribution can be written as an appropriate limit of distributions, and where conventional approaches…

统计方法学 · 统计学 2014-12-01 Sergios Agapiou , Gareth O. Roberts , Sebastian J. Vollmer

Incorporating information about the target distribution in proposal mechanisms generally produces efficient Markov chain Monte Carlo algorithms (or at least, algorithms that are more efficient than uninformed counterparts). For instance, it…

统计计算 · 统计学 2021-08-27 Philippe Gagnon

Design-consistent model-assisted estimation has become the standard practice in survey sampling. However, a general theory is lacking so far, which allows one to incorporate modern machine-learning techniques that can lead to potentially…

机器学习 · 统计学 2020-03-26 Luis Sanguiao Sande , Li-Chun Zhang

Randomized saturation designs are a family of designs which assign a possibly different treatment proportion to each cluster of a population at random. As a result, they generalize the well-known (stratified) completely randomized designs…

统计方法学 · 统计学 2022-03-21 Chencheng Cai , Jean Pouget-Abadie , Edoardo M. Airoldi

This paper derives identification, estimation, and inference results using spatial differencing in sample selection models with unobserved heterogeneity. We show that under the assumption of smooth changes across space of the unobserved…

计量经济学 · 经济学 2020-09-15 Alexander Klein , Guy Tchuente

Ensemble classification is an emerging approach to land cover mapping whereby the final classification output is a result of a consensus of classifiers. Intuitively, an ensemble system should consist of base classifiers which are diverse…

机器学习 · 计算机科学 2008-11-14 A. Gidudu , B. Abe , T. Marwala

We design and implement a novel algorithm for computing a multilevel Monte Carlo (MLMC) estimator of the cumulative distribution function of a quantity of interest in problems with random input parameters or initial conditions. Our approach…

数值分析 · 数学 2020-08-26 Søren Taverniers , Daniel M. Tartakovsky

A design-based individual prediction approach is developed based on the expected cross-validation results, given the sampling design and the sample-splitting design for cross-validation. Whether the predictor is selected from an ensemble of…

机器学习 · 统计学 2023-01-24 Li-Chun Zhang , Danhyang Lee

This article studies the benefits of using spatially randomized experimental designs which partition the experimental area into distinct, non-overlapping units with treatments assigned randomly. Such designs offer improved policy evaluation…

统计理论 · 数学 2025-11-18 Ying Yang , Chengchun Shi , Fang Yao , Shouyang Wang , Hongtu Zhu

The problem of validating or criticising models for georeferenced data is challenging, since the conclusions can vary significantly depending on the locations of the validation set. This work proposes the use of cross-validation techniques…

统计计算 · 统计学 2018-02-19 Viviana G R Lobo , Thaís C O da Fonseca , Fernando A S Moura

Standard supervised machine learning assumes that the distribution of the source samples used to train an algorithm is the same as the one of the target samples on which it is supposed to make predictions. However, as any data scientist…

机器学习 · 计算机科学 2020-02-12 Pirmin Lemberger , Ivan Panico

This paper begins with a description of methods for estimating image probability density functions that reflects the observation that such data is usually constrained to lie in restricted regions of the high-dimensional image space-not…

计算机视觉与模式识别 · 计算机科学 2023-11-14 Peter Tu , Zhaoyuan Yang , Richard Hartley , Zhiwei Xu , Jing Zhang , Yiwei Fu , Dylan Campbell , Jaskirat Singh , Tianyu Wang

In this paper, we consider stochastic coverage of bounded domains by a diffusing swarm of robots that take local measurements of an underlying scalar field. We introduce three control methodologies with diffusion, advection, and reaction as…

系统与控制 · 计算机科学 2016-10-04 Karthik Elamvazhuthi , Chase Adams , Spring Berman

We describe and analyze some Monte Carlo methods for manifolds in Euclidean space defined by equality and inequality constraints. First, we give an MCMC sampler for probability distributions defined by un-normalized densities on such…

数值分析 · 数学 2017-09-21 Emilio Zappa , Miranda Holmes-Cerfon , Jonathan Goodman

In the study of natural and artificial complex systems, responses that are not completely determined by the considered decision variables are commonly modelled probabilistically, resulting in response distributions varying across decision…

统计方法学 · 统计学 2021-10-07 Athénaïs Gautier , David Ginsbourger , Guillaume Pirot

Integrating non-probability samples into finite-population inference typically requires modeling unknown selection probabilities under a missing-at-random (MAR) assumption that is difficult to verify. We propose a design-based alternative…

统计方法学 · 统计学 2026-05-08 Andrius Čiginas , Ieva Burakauskaitė , Jae Kwang Kim

A stratified sampling plan to audit health insurance claims is offered. The stratification is by dollar amount of the claim. The plan is representative in the sense that with high probability for each stratum, the difference in the average…

应用统计 · 统计学 2009-09-29 Arthur Cohen , Joseph Naus

The increasing recognition of the association between adverse human health conditions and many environmental substances as well as processes has led to the need to monitor them. An important problem that arises in environmental statistics…

应用统计 · 统计学 2020-02-05 Yu Wang , Nhu D. Le , James V. Zidek