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Optimal transport (OT) is known to be sensitive against outliers because of its marginal constraints. Outlier robust OT variants have been proposed based on the definition that outliers are samples which are expensive to move. In this…

机器学习 · 统计学 2022-06-27 Kilian Fatras

Numerous weather parameters affect the occurrence and amount of rainfall. Therefore, it is important to study these parameters and their interdependency. In this paper, different weather and time-related variables -- relative humidity,…

大气与海洋物理 · 物理学 2018-05-08 Shilpa Manandhar , Soumyabrata Dev , Yee Hui Lee , Stefan Winkler , Yu Song Meng

Human mobility is becoming an accessible field of study thanks to the progress and availability of tracking technologies as a common feature of smart phones. We describe an example of a scalable experiment exploiting these circumstances at…

Researches on the human mobility have made great progress in many aspects, but the long-term and long-distance migration behavior is lack of in-depth and extensive research because of the difficult in accessing to household data. In this…

物理与社会 · 物理学 2019-03-27 Qi Nie , Jian-Jun Wu , Xiao-Yong Yan , Jin-Hu Liu , Jun Wang

Urban mobility in developing countries, particularly in cities like Cali, Colombia, faces multifaceted challenges influenced by socioeconomic factors and the distinct characteristics of transport users Despite motorcycles emerging as a…

物理与社会 · 物理学 2024-02-14 Kathleen Salazar-Serna , Jesus D. Diaz , Isabel C. Garcia

The growing significance of ridesourcing services in recent years suggests a need to examine the key determinants of ridesourcing demand. However, little is known regarding the nonlinear effects and spatial heterogeneity of ridesourcing…

机器学习 · 计算机科学 2024-01-03 Xiaojian Zhang , Xiang Yan , Zhengze Zhou , Yiming Xu , Xilei Zhao

This study utilises the R programming language for statistical data analysis to understand Tourism dynamics in Poland. It focuses on methods for data visualisation, multivariate statistics, and hypothesis testing. To investigate the…

数值分析 · 数学 2025-02-17 Saad Ahmed Jamal

This work proposes a causal and recursive algorithm for solving the "robust" principal components' analysis (PCA) problem. We primarily focus on robustness to correlated outliers. In recent work, we proposed a new way to look at this…

信息论 · 计算机科学 2011-03-03 Chenlu Qiu , Namrata Vaswani

Principal Component Analysis (PCA) is widely used for dimensionality reduction and data analysis. However, PCA results are adversely affected by outliers often observed in real-world data. Existing robust PCA methods are often…

计算工程、金融与科学 · 计算机科学 2025-06-23 Timbwaoga Aime Judicael Ouermi , Jixian Li , Chris R. Johnson

The recent outbreak of a novel coronavirus and its rapid spread underlines the importance of understanding human mobility. Enclosed spaces, such as public transport vehicles (e.g. buses and trains), offer a suitable environment for…

社会与信息网络 · 计算机科学 2020-04-06 Ahmad El Shoghri , Jessica Liebig , Raja Jurdak , Lauren Gardner , Salil S. Kanhere

Mobility and transport, by their nature, involve crowds and require the coordination of multiple stakeholders - such as policy-makers, planners, transport operators, and the travelers themselves. However, traditional approaches have been…

Human mobility is subject to collective dynamics that are the outcome of numerous individual choices. Smart card data which originated as a means of facilitating automated fare collections has emerged as an invaluable source for analyzing…

物理与社会 · 物理学 2022-08-11 Oded Cats

Understanding individual mobility behavior is critical for modeling urban transportation. It provides deeper insights on the generative mechanisms of human movements. Emerging data sources such as mobile phone call detail records, social…

社会与信息网络 · 计算机科学 2020-10-21 Jiechao Zhang , Samiul Hasan , Xuedong Yan , Xiaobing Liu

Travel decisions tend to exhibit sensitivity to uncertainty and information processing constraints. These behavioural conditions can be characterized by a generative learning process. We propose a data-driven generative model version of…

计量经济学 · 经济学 2019-07-29 Melvin Wong , Bilal Farooq

A data table which is arranged according to two factors can often be considered as a compositional table. An example is the number of unemployed people, split according to gender and age classes. Analyzed as compositions, the relevant…

统计方法学 · 统计学 2019-04-12 Julie Rendlová , Karel Hron , Kamila Fačevicová , Peter Filzmoser

State-space models (SSMs) provide a flexible framework for modelling time series data, but their reliance on Gaussian error assumptions makes them highly sensitive to outliers. We propose a robust estimation method, ROAMS, that mitigates…

统计方法学 · 统计学 2025-11-20 Rajan Shankar , Ines Wilms , Jakob Raymaekers , Garth Tarr

Predictive models for human mobility have important applications in many fields such as traffic control, ubiquitous computing and contextual advertisement. The predictive performance of models in literature varies quite broadly, from as…

计算机与社会 · 计算机科学 2016-08-08 Andrea Cuttone , Sune Lehmann , Marta C. González

Reliable measurement of dependence between variables is essential in many applications of statistics and machine learning. Current approaches for dependence estimation, especially density-based approaches, lack in precision, robustness…

信号处理 · 电气工程与系统科学 2022-11-04 Rishabh Singh , Jose C. Principe

Travel behaviour modellers have an increasingly diverse set of models at their disposal, ranging from traditional econometric structures to models from mathematical psychology and data-driven approaches from machine learning. A key question…

计量经济学 · 经济学 2026-04-15 Stephane Hess , Sander van Cranenburgh

This paper presents a modeling approach to infer scheduling and routing patterns from digital freight transport activity data for different freight markets. We provide a complete modeling framework including a new discrete-continuous…

机器学习 · 计算机科学 2023-11-28 Ali Nadi , Lóránt Tavasszy , J. W. C. van Lint , Maaike Snelder