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In NeRF, a critical problem is to effectively estimate the occupancy to guide empty-space skipping and point sampling. Grid-based methods work well for small-scale scenes. However, on large-scale scenes, they are limited by predefined…

计算机视觉与模式识别 · 计算机科学 2024-11-19 Zhenxing Mi , Dan Xu

As human activities intensify, environmental systems such as aquatic ecosystems and water treatment systems face increasingly complex pressures, impacting ecological balance, public health, and sustainable development, making intelligent…

机器学习 · 计算机科学 2025-03-13 Lei Liu , Yuchao Lu , Ling An , Huajie Liang , Chichun Zhou , Zhenyu Zhang

Traditional approaches to ecosystem modelling have relied on spatially homogeneous approximations to interaction, growth and death. More recently, spatial interaction and dispersal have also been considered. While these leads to certain…

种群与进化 · 定量生物学 2010-10-07 Thomas Adams \ast , Graeme Ackland , Glenn Marion , Colin Edwards

Existing self-supervised learning (SSL) methods primarily learn object-invariant representations but often neglect the spatial structure and relationships among object parts. To address this limitation, we introduce Spatial Prediction (SP),…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Yang Shen , Yusen Cai , Weronika Hryniewska-Guzik , Qing Lin , Mengmi Zhang

Objective: Non-rigid image registration with high accuracy and efficiency is still a challenging task for medical image analysis. In this work, we present the spatially region-weighted correlation ratio (SRWCR) as a novel similarity measure…

统计方法学 · 统计学 2018-04-17 Lun Gong , Cheng Zhang , Luwen Duan , Xueying Du , Hanqiu Liu , Xinjian Chen , Jian Zheng

Understanding the abundance of a species is the first step towards understanding both its long-term sustainability and the impact that we may be having upon it. Ecologists use camera traps to remotely survey for the presence of specific…

计算机视觉与模式识别 · 计算机科学 2021-11-29 Ryan Curry , Cameron Trotter , Andrew Stephen McGough

The issue of spatial confounding between the spatial random effect and the fixed effects in regression analyses has been identified as a concern in the statistical literature. Multiple authors have offered perspectives and potential…

统计方法学 · 统计学 2023-01-18 Kori Khan , Catherine A. Calder

Population dynamics in fields such as molecular biology, epidemiology, and ecology exhibit highly stochastic and non-linear behaviour. In gene regulatory systems in particular, oscillations and multi-stability are especially common. Despite…

定量方法 · 定量生物学 2026-05-13 Frederick Truman-Williams , Giorgos Minas

Automated animal censuses with aerial imagery are a vital ingredient towards wildlife conservation. Recent models are generally based on supervised learning and thus require vast amounts of training data. Due to their scarcity and minuscule…

计算机视觉与模式识别 · 计算机科学 2022-11-11 Xiaochen Zheng

Randomized coordinate descent (RCD) methods are state-of-the-art algorithms for training linear predictors via minimizing regularized empirical risk. When the number of examples ($n$) is much larger than the number of features ($d$), a…

最优化与控制 · 数学 2016-05-31 Dominik Csiba , Peter Richtárik

Most mechanistic predator-prey modelling has involved either parameterization from process rate data or inverse modelling. Here, we take a median road: we aim at identifying the potential benefits of combining datasets, when both population…

种群与进化 · 定量生物学 2021-02-11 Frederic Barraquand , Olivier Gimenez

Fine particulate matter and aerosol optical thickness are of interest to atmospheric scientists for understanding air quality and its various health/environmental impacts. The available data are extremely large, making uncertainty…

统计方法学 · 统计学 2025-03-05 Madelyn Clinch , Jonathan R. Bradley

We contribute a general and flexible framework to estimate the size of a closed population in the presence of $K$ capture-recapture lists and heterogeneous capture probabilities. Our novel identifying strategy leverages the fact that it is…

统计方法学 · 统计学 2024-07-08 Mateo Dulce Rubio , Edward Kennedy

Automatic extraction of buildings in urban and residential scenes has become a subject of growing interest in the domain of photogrammetry and remote sensing, particularly since mid-1990s. Active contour model, colloquially known as snake…

计算机视觉与模式识别 · 计算机科学 2020-06-01 Thanh Huy Nguyen , Sylvie Daniel , Didier Gueriot , Christophe Sintes , Jean-Marc Le Caillec

1. Predicting space use patterns of animals from their interactions with the environment is fundamental for understanding the effect of habitat changes on ecosystem functioning. Recent attempts to address this problem have sought to unify…

We propose a generalizable framework for the population estimation of dense, informal settlements in low-income urban areas--so called 'slums'--using high-resolution satellite imagery. Precise population estimates are a crucial factor for…

计算机与社会 · 计算机科学 2020-09-18 Konstantin Klemmer , Godwin Yeboah , João Porto de Albuquerque , Stephen A Jarvis

Point cloud analysis without pose priors is very challenging in real applications, as the orientations of point clouds are often unknown. In this paper, we propose a brand new point-set learning framework PRIN, namely, Point-wise Rotation…

计算机视觉与模式识别 · 计算机科学 2021-11-23 Yang You , Yujing Lou , Ruoxi Shi , Qi Liu , Yu-Wing Tai , Lizhuang Ma , Weiming Wang , Cewu Lu

Spatial regression or geographically weighted regression models have been widely adopted to capture the effects of auxiliary information on a response variable of interest over a region. In contrast, relationships between response and…

统计方法学 · 统计学 2021-04-29 Shonosuke Sugasawa , Daisuke Murakami

Given an unknown dynamical system, what is the minimum number of samples needed for effective learning of its governing laws and accurate prediction of its future evolution behavior, and how to select these critical samples? In this work,…

机器学习 · 计算机科学 2024-01-15 Ce Zhang , Kailiang Wu , Zhihai He

Crowd counting models in highly congested areas confront two main challenges: weak localization ability and difficulty in differentiating between foreground and background, leading to inaccurate estimations. The reason is that objects in…

计算机视觉与模式识别 · 计算机科学 2024-06-19 Yuehai Chen , Qingzhong Wang , Jing Yang , Badong Chen , Haoyi Xiong , Shaoyi Du
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