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Mapping standing dead trees is critical for assessing forest health, monitoring biodiversity, and mitigating wildfire risks, for which aerial imagery has proven useful. However, dense canopy structures, spectral overlaps between living and…

计算机视觉与模式识别 · 计算机科学 2026-05-06 Anis Ur Rahman , Einari Heinaro , Mete Ahishali , Samuli Junttila

The isolation forest algorithm for outlier detection exploits a simple yet effective observation: if taking some multivariate data and making uniformly random cuts across the feature space recursively, it will take fewer such random cuts…

机器学习 · 统计学 2021-11-24 David Cortes

Scattered trees outside of dense, closed-canopy forests are very important for carbon sequestration, supporting livelihoods, maintaining ecosystem integrity, and climate change adaptation and mitigation. In contrast to trees inside of…

计算机视觉与模式识别 · 计算机科学 2021-02-03 John Brandt , Fred Stolle

This work develops formal statistical inference procedures for machine learning ensemble methods. Ensemble methods based on bootstrapping, such as bagging and random forests, have improved the predictive accuracy of individual trees, but…

机器学习 · 统计学 2015-09-11 Lucas Mentch , Giles Hooker

The study of random graphs and networks had an explosive development in the last couple of decades. Meanwhile, techniques for the statistical analysis of sequences of networks were less developed. In this paper we focus on networks…

无序系统与神经网络 · 物理学 2017-04-18 Daniel Fraiman , Nicolas Fraiman , Ricardo Fraiman

Reliable obstacle detection and classification in rough and unstructured terrain such as agricultural fields or orchards remains a challenging problem. These environments involve large variations in both geometry and appearance, challenging…

机器人学 · 计算机科学 2019-03-14 Mikkel Kragh , James Underwood

In this paper, random forests are proposed for operating devices diagnostics in the presence of a variable number of features. In various contexts, like large or difficult-to-access monitored areas, wired sensor networks providing features…

Nonparametric estimation of a mixing density based on observations from the corresponding mixture is a challenging statistical problem. This paper surveys the literature on a fast, recursive estimator based on the predictive recursion…

统计方法学 · 统计学 2022-09-15 Ryan Martin

Two-sample feature selection is the problem of finding features that describe a difference between two probability distributions, which is a ubiquitous problem in both scientific and engineering studies. However, existing methods have…

Atmospheric correction is a fundamental task in remote sensing because observations are taken either of the atmosphere or looking through the atmosphere. Atmospheric correction errors can significantly alter the spectral signature of the…

图像与视频处理 · 电气工程与系统科学 2022-03-23 Fangcao Xu , Jian Sun , Guido Cervone , Mark Salvador

Monitoring remote forests is a global challenge central to climate mitigation and biodiversity conservation, yet satellite observations are frequently limited by weather, dense canopies, and solar dependency. Here we show that passive…

Model-independent searches in particle physics aim at completing our knowledge of the universe by looking for new possible particles not predicted by the current theories. Such particles, referred to as signal, are expected to behave as a…

应用统计 · 统计学 2019-05-31 Alessandro Casa , Giovanna Menardi

Change point analysis has applications in a wide variety of fields. The general problem concerns the inference of a change in distribution for a set of time-ordered observations. Sequential detection is an online version in which new data…

统计方法学 · 统计学 2013-10-16 David S. Matteson , Nicholas A. James

A new family of tree models is proposed, which we call "differential trees." A differential tree model is constructed from multiple data sets and aims to detect distributional differences between them. The new methodology differs from the…

统计方法学 · 统计学 2012-10-01 Yong Wang , Ilze Ziedins , Mark Holmes , Neil Challands

Humans use UAVs to monitor changes in forest environments since they are lightweight and provide a large variety of surveillance data. However, their information does not present enough details for understanding the scene which is needed to…

计算机视觉与模式识别 · 计算机科学 2024-03-12 Bianca-Cerasela-Zelia Blaga , Sergiu Nedevschi

The problem of distributed or decentralized detection and estimation in applications such as wireless sensor networks has often been considered in the framework of parametric models, in which strong assumptions are made about a statistical…

信息论 · 计算机科学 2015-06-25 Joel B. Predd , Sanjeev R. Kulkarni , H. Vincent Poor

This paper proposes a multi-spectral random forest classifier with suitable feature selection and masking for tree cover estimation in urban areas. The key feature of the proposed classifier is filtering out the built-up region using…

计算机视觉与模式识别 · 计算机科学 2023-06-12 Usman Nazir , Momin Uppal , Muhammad Tahir , Zubair Khalid

Anomaly detection is concerned with identifying examples in a dataset that do not conform to the expected behaviour. While a vast amount of anomaly detection algorithms exist, little attention has been paid to explaining why these…

机器学习 · 计算机科学 2021-12-14 Nirmal Sobha Kartha , Clément Gautrais , Vincent Vercruyssen

Discovering and parameterising latent confounders represent important and challenging problems in causal structure learning and density estimation respectively. In this paper, we focus on both discovering and learning the distribution of…

机器学习 · 计算机科学 2022-08-23 Kiattikun Chobtham , Anthony C. Constantinou

A key challenge in estimating causal effects from observational data is handling confounding and is commonly achieved through weighting methods that balance distribution of covariates between treatment and control groups. Weighting…

统计方法学 · 统计学 2025-12-23 Simion De , Jared D. Huling