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Accurate air quality forecasting is crucial for public health, environmental monitoring and protection, and urban planning. However, existing methods fail to effectively utilize multi-scale information, both spatially and temporally.…

机器学习 · 计算机科学 2024-01-02 Yuxiao Hu , Qian Li , Xiaodan Shi , Jinyue Yan , Yuntian Chen

Fine-grained air pollution forecasting is crucial for urban management and the development of healthy buildings. Deploying portable sensors on mobile platforms such as cars and buses offers a low-cost, easy-to-maintain, and wide-coverage…

机器学习 · 计算机科学 2025-12-05 Nan Zhou , Weijie Hong , Huandong Wang , Jianfeng Zheng , Qiuhua Wang , Yali Song , Xiao-Ping Zhang , Yong Li , Xinlei Chen

Plastic pollution is a critical environmental issue, and detecting and monitoring plastic litter is crucial to mitigate its impact. This paper presents the methodology of mapping street-level litter, focusing primarily on plastic waste and…

计算机视觉与模式识别 · 计算机科学 2024-01-29 Sriram Reddy Mandhati , N. Lakmal Deshapriya , Chatura Lavanga Mendis , Kavinda Gunasekara , Frank Yrle , Angsana Chaksan , Sujit Sanjeev

Air quality monitoring requires to produce accurate estimation of nitrogen dioxide or fine particulate matter concentration maps, at different moments. A typical strategy is to combine different types of data. On the one hand, concentration…

应用统计 · 统计学 2025-02-13 Benjamin Auder , Camille Coron , Jean-Michel Poggi , Emma Thulliez

Rapid urbanization has intensified traffic congestion, environmental strain, and inefficiencies in transportation systems, creating an urgent need for intelligent and adaptive traffic management solutions. Conventional systems relying on…

机器学习 · 计算机科学 2025-10-14 Shaharyar Alam Ansari , Mohammad Luqman , Aasim Zafar , Savir Ali

Almost all remote sensing atmospheric PM2.5 estimation methods need satellite aerosol optical depth (AOD) products, which are often retrieved from top-of-atmosphere (TOA) reflectance via an atmospheric radiative transfer model. Then, is it…

大气与海洋物理 · 物理学 2019-02-28 Huanfeng Shen , Tongwen Li , Qiangqiang Yuan , Liangpei Zhang

Exposure to poor indoor air quality poses significant health risks, necessitating thorough assessment to mitigate associated dangers. This study aims to predict hourly indoor fine particulate matter (PM2.5) concentrations and investigate…

机器学习 · 计算机科学 2024-05-14 Wenhua Yu , Bahareh Nakisa , Seng W. Loke , Svetlana Stevanovic , Yuming Guo , Mohammad Naim Rastgoo

The integration of satellite-derived aerosol optical depth (AOD) and station-measured PM2.5 provides a promising approach for obtaining spatial PM2.5 data. Several spatiotemporal models, which considered spatial and temporal heterogeneities…

大气与海洋物理 · 物理学 2018-11-14 Tongwen Li , Huanfeng Shen , Qiangqiang Yuan , Liangpei Zhang

With the advent of advanced 4G/5G mobile networks, mobile phone data collected by operators now includes detailed, service-specific traffic information with high spatio-temporal resolution. In this paper, we leverage this type of data to…

机器学习 · 计算机科学 2024-11-26 Giulio Loddi , Chiara Pugliese , Francesco Lettich , Fabio Pinelli , Chiara Renso

Air pollution remains a leading global health threat, with fine particulate matter (PM2.5) contributing to millions of premature deaths annually. Chemical transport models (CTMs) are essential tools for evaluating how emission controls…

大气与海洋物理 · 物理学 2025-06-24 Shigan Liu , Guannan Geng , Yanfei Xiang , Hejun Hu , Xiaodong Liu , Xiaomeng Huang , Qiang Zhang

The use of Internet of Things (IoT) sensors for air pollution monitoring has significantly increased, resulting in the deployment of low-cost sensors. Despite this advancement, accurately calibrating these sensors in uncontrolled…

机器学习 · 计算机科学 2023-09-12 Keivan Faghih Niresi , Mengjie Zhao , Hugo Bissig , Henri Baumann , Olga Fink

Human movements in the workspace usually have non-negligible relations with air quality parameters (e.g., CO$_2$, PM2.5, and PM10). We establish a system to monitor indoor human mobility with air quality and assess the interrelationship…

人机交互 · 计算机科学 2023-06-22 Kyle K. Qin , Mohammad S. Rahaman , Yongli Ren , Chi-Tsun Cheng , Ivan Cole , Flora D. Salim

This paper proposes a high-accuracy radio map construction method tailored for environments where location information is affected by bursty errors. Radio maps are an effective tool for visualizing wireless environments. Although extensive…

信号处理 · 电气工程与系统科学 2025-09-25 Koki Kanzaki , Koya Sato

The patterns of particulate matter with diameters that are generally 2.5 micrometers and smaller (PM2.5) are heterogeneous in China nationwide but can be homogeneous region-wide. To reduce the adverse effects from PM2.5, policymakers need…

应用统计 · 统计学 2023-11-07 Tingyin Wang , Xueqin Wang , Xiaobo Guo , Heping Zhang

Urban air pollution poses significant risks to public health, environmental sustainability, and policy planning. Effective air quality management requires predictive tools that can integrate diverse datasets and communicate complex spatial…

人机交互 · 计算机科学 2025-10-27 Brij Bidhin Desai , Yukta Arvind Rajapur , Aswathi Mundayatt , Jaya Sreevalsan-Nair

Static noise maps depicting long-term noise levels over wide areas are valuable urban planning assets for municipalities in decreasing noise exposure of residents. However, non-traffic noise sources with transient behavior, which people…

人工智能 · 计算机科学 2024-08-01 H. Emre Erdem , Henry Leung

Satellite-based retrieval has become a popular PM2.5 monitoring method currently. To improve the retrieval performance, multiple variables are usually introduced as auxiliary variable in addition to aerosol optical depth (AOD). Different…

大气与海洋物理 · 物理学 2019-07-09 Qianqian Yang , Qiangqiang Yuan , Linwei Yue , Huanfeng Shen , Liangpei Zhang

Data collection in economically constrained countries often necessitates using approximate and biased measurements due to the low-cost of the sensors used. This leads to potentially invalid predictions and poor policies or decision making.…

机器学习 · 计算机科学 2019-12-02 Michael T. Smith , Joel Ssematimba , Mauricio A. Alvarez , Engineer Bainomugisha

Environment mapping is an essential prerequisite for mobile robots to perform different tasks such as navigation and mission planning. With the availability of low-cost 2D LiDARs, there are increasing applications of such 2D LiDARs in…

机器人学 · 计算机科学 2021-06-08 Ran Liu , Yongping He , Chau Yuen , Billy Pik Lik Lau , Rashid Ali , Wenpeng Fu , Zhiqiang Cao

For autonomous vehicles to operate persistently in a typical urban environment, it is essential to have high accuracy position information. This requires a mapping and localisation system that can adapt to changes over time. A localisation…

机器人学 · 计算机科学 2020-08-31 Julie Stephany Berrio , Stewart Worrall , Mao Shan , Eduardo Nebot