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The evolution of leadership in migratory populations depends not only on costs and benefits of leadership investments but also on the opportunities for individuals to rely on cues from others through social interactions. We derive an…

适应与自组织系统 · 物理学 2013-05-17 Darren Pais , Naomi Ehrich Leonard

This work contributes to the discussion on how innovative data can support a fast crisis response. We use operational data from Facebook to gain useful insights on where people fleeing Ukraine following the Russian invasion are likely to be…

Given taxi-ride counts information between departure and destination locations, how can we forecast their future demands? In general, given a data stream of events with seasonal patterns that innovate over time, how can we effectively and…

机器学习 · 计算机科学 2021-10-26 Koki Kawabata , Siddharth Bhatia , Rui Liu , Mohit Wadhwa , Bryan Hooi

This paper presents an exhaustive study on the arrivals process at eight important European airports. Using inbound traffic data, we define, compare, and contrast a data-driven Poisson and PSRA point process. Although, there is sufficient…

应用统计 · 统计学 2017-08-09 Carlo Lancia , Guglielmo Lulli

We present a large-scale computational analysis of migration-related discourse in UK parliamentary debates spanning over 75 years and compare it with US congressional discourse. Using open-weight LLMs, we annotate each statement with…

计算与语言 · 计算机科学 2025-09-18 Vahid Ghafouri , Robert McNeil , Teodor Yankov , Madeleine Sumption , Luc Rocher , Scott A. Hale , Adam Mahdi

Human mobility has a significant impact on several layers of society, from infrastructural planning and economics to the spread of diseases and crime. Representing the system as a complex network, in which nodes are assigned to regions…

Successfully integrating newcomers into native communities has become a key issue for policy makers, as the growing number of migrants has brought cultural diversity, new skills, and at times, societal tensions to receiving countries. We…

物理与社会 · 物理学 2019-01-29 Yao-Li Chuang , Tom Chou , Maria R. D'Orsogna

Data stream forecasts are essential inputs for decision making at digital platforms. Machine learning algorithms are appealing candidates to produce such forecasts. Yet, digital platforms require a large-scale forecast framework that can…

应用统计 · 统计学 2024-01-18 Jeroen Rombouts , Ines Wilms

Agent-Based Models (ABMs) are often used to model migration and are increasingly used to simulate individual migrant decision-making and unfolding events through a sequence of heuristic if-then rules. However, ABMs lack the methods to embed…

应用统计 · 统计学 2021-11-09 Peter Strong , Alys McAlpine , Jim Q Smith

The United States has introduced a special humanitarian parole process for Ukrainian citizens in response to Russia 2022 invasion of Ukraine. To qualify for parole, Ukrainian applicants must have a sponsor in the United States. In…

物理与社会 · 物理学 2023-10-11 Fatemeh Farajzadeh , Ryan B. Killea , Alexander Teytelboym , Andrew C. Trapp

Since 2014, nearly 2 million Venezuelans have fled to Colombia to escape an economically devastated country during what is one of the largest humanitarian crises in modern history. Non-government organizations and local government units are…

The statistical distances between countries, calculated for various moving average time windows, are mapped into the ultrametric subdominant space as in classical Minimal Spanning Tree methods. The Moving Average Minimal Length Path (MAMLP)…

物理与社会 · 物理学 2012-09-25 M. Gligor , M. Ausloos

Analysing age-specific mortality, fertility, and migration patterns is a crucial task in demography with significant policy relevance. In practice, such analysis is challenging when studying a large number of subpopulations, due to small…

应用统计 · 统计学 2025-05-29 Gregor Zens

The sophistication and diversity of contemporary cyberattacks have rendered the use of proxies, gateways, firewalls, and encrypted tunnels as a standalone defensive strategy inadequate. Consequently, the proactive identification of data…

机器学习 · 计算机科学 2024-09-24 Liyang Wang , Yu Cheng , Hao Gong , Jiacheng Hu , Xirui Tang , Iris Li

Understanding human mobility is critical for decision support in areas from urban planning to infectious diseases control. Prior work has focused on tracking daily logs of outdoor mobility without considering relevant context, which contain…

物理与社会 · 物理学 2017-09-26 Kewei Zhang , Minkyoung Kim , Raja Jurdak , Dean Paini

A number of studies have investigated the large-scale drivers and upstream-precursors of extreme weather events, making it clear that the earliest warning signs of extreme events can be remote in both time and space from the impacted…

大气与海洋物理 · 物理学 2023-06-30 Joshua Dorrington , Christian Grams , Federico Grazzini , Linus Magnusson , Frederic Vitart

The aggravating effects of climate change and the growing population in hurricane-prone areas escalate the challenges in large-scale hurricane evacuations. While hurricane preparedness and response strategies vastly rely on the accuracy and…

机器学习 · 计算机科学 2023-03-14 Yuran Sun , Shih-Kai Huang , Xilei Zhao

Following Turkey's 2020 decision to revoke border controls, many individuals journeyed towards the Greek, Bulgarian, and Turkish borders. However, the lack of verifiable statistics on irregular migration and discrepancies between media…

This paper develops a data-driven toolkit for traffic forecasting using high-resolution (a.k.a. event-based) traffic data. This is the raw data obtained from fixed sensors in urban roads. Time series of such raw data exhibit heavy…

信号处理 · 电气工程与系统科学 2021-01-01 Wenqing Li , Chuhan Yang , Saif Eddin Jabari

In complex large-scale systems such as climate, important effects are caused by a combination of confounding processes that are not fully observable. The identification of sources from observations of system state is vital for attribution…

机器学习 · 统计学 2023-03-22 Joseph Hart , Mamikon Gulian , Indu Manickam , Laura Swiler