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Air pollution is a significant global health risk, contributing to millions of premature deaths annually. Nitrogen dioxide (NO2), a harmful pollutant, disproportionately affects urban areas where monitoring networks are often sparse. We…

Signal Processing · Electrical Eng. & Systems 2025-05-12 Finn Gueterbock , Raul Santos-Rodriguez , Jeffrey N. Clark

On-road air pollution exhibits substantial variability over short distances due to emission sources, dilution, and physicochemical processes. Integrating mobile monitoring data with street view images (SVIs) holds promise for predicting…

Machine Learning · Computer Science 2024-09-20 Hui Zhong , Di Chen , Pengqin Wang , Wenrui Wang , Shaojie Shen , Yonghong Liu , Meixin Zhu

Quantifying the impacts of air pollution on health and climate relies on key atmospheric particle properties such as toxicity and hygroscopicity. However, these properties typically require complex observational techniques or expensive…

Machine Learning · Computer Science 2026-02-13 Fei Jiang , Jiyang Xia , Junjie Yu , Mingfei Sun , Hugh Coe , David Topping , Dantong Liu , Zhenhui Jessie Li , Zhonghua Zheng

Speech quality estimation has recently undergone a paradigm shift from human-hearing expert designs to machine-learning models. However, current models rely mainly on supervised learning, which is time-consuming and expensive for label…

Sound · Computer Science 2024-02-27 Szu-Wei Fu , Kuo-Hsuan Hung , Yu Tsao , Yu-Chiang Frank Wang

Anomaly detection is a classical but worthwhile problem, and many deep learning-based anomaly detection algorithms have been proposed, which can usually achieve better detection results than traditional methods. In view of reconstruct…

Machine Learning · Computer Science 2020-04-16 Chunkai Zhang , Shaocong Li , Hongye Zhang , Yingyang Chen

In-time and accurate assessments of on-road vehicle emissions play a central role in urban air quality and health policymaking. However, official insight is hampered by the Inspection/Maintenance (I/M) procedure conducted in the laboratory…

Change detection involves segmenting sequential data such that observations in the same segment share some desired properties. Multivariate change detection continues to be a challenging problem due to the variety of ways change points can…

Methodology · Statistics 2018-10-16 Wenyu Zhang , Daniel Gilbert , David Matteson

Quantum resources can, in principle, enable Heisenberg-limited (HL) sensing, yet no-go theorems imply that HL scaling is generically unattainable in realistic noisy devices. While quantum error correction (QEC) can suppress noise, its use…

Quantum Physics · Physics 2026-01-06 Hang Xu , Xiaoyang Deng , Ze Zheng , Tailong Xiao , Guihua Zeng

This article presents an innovative approach for developing an efficient reduced-order model to study the dispersion of urban air pollutants. The need for real-time air quality monitoring has become increasingly important, given the rise in…

Numerical Analysis · Mathematics 2023-05-29 Moaad Khamlich , Giovanni Stabile , Gianluigi Rozza , László Környei , Zoltán Horváth

Chemical multisensor devices need calibration algorithms to estimate gas concentrations. Their possible adoption as indicative air quality measurements devices poses new challenges due to the need to operate in continuous monitoring modes…

Artificial Intelligence · Computer Science 2020-02-14 S. De Vito , E. Esposito , M. Salvato , O. Popoola , F. Formisano , R. Jones , G. Di Francia

Diffusion models offer a robust framework for sampling from unnormalized probability densities, which requires accurately estimating the score of the noise-perturbed target distribution. While the standard Denoising Score Identity (DSI)…

Machine Learning · Computer Science 2025-12-24 Khaled Kahouli , Romuald Elie , Klaus-Robert Müller , Quentin Berthet , Oliver T. Unke , Arnaud Doucet

The problem of locating an odor source in turbulent flows is central to key applications such as environmental monitoring and disaster response. We address this challenge by designing an algorithm based on Bayesian inference, which uses…

Fluid Dynamics · Physics 2025-04-11 Lorenzo Piro , Robin A. Heinonen , Massimo Cencini , Luca Biferale

Air pollution poses a serious threat to sustainable environmental conditions in the 21st century. Its importance in determining the health and living standards in urban settings is only expected to increase with time. Various factors…

Machine Learning · Computer Science 2022-06-16 Mayukh Bhattacharyya , Sayan Nag , Udita Ghosh

Many speech enhancement (SE) methods rely on continuous representations. Recently, discrete audio tokens have been explored to enable autoregressive generation for SE. However, it remains unclear whether discretization itself consistently…

Sound · Computer Science 2026-03-24 Jingyi Li , Luca Della Libera , Mirco Ravanelli , Cem Subakan

Currently, fixed static sensing is a primary way to monitor environmental data like air quality in cities. However, to obtain a dense spatial coverage, a large number of static monitors are required, thereby making it a costly option. Dense…

Machine Learning · Computer Science 2022-01-25 Charul Paliwal , Pravesh Biyani

Fine-grained air quality (AQ) mapping is made possible by the proliferation of cheap AQ micro-stations (MSs). However, their measurements are often inaccurate and sensitive to local disturbances, in contrast to standardized stations (SSs)…

Machine Learning · Computer Science 2024-08-20 Meng Xu , Ke Han , Weijian Hu , Wen Ji

Air pollution in urban areas has severe consequences for both human health and the environment, predominantly caused by exhaust emissions from vehicles. To address the issue of air pollution awareness, Air Pollution Monitoring systems are…

Machine Learning · Computer Science 2023-07-04 Hemanth Karnati

Anomaly detection for indoor air quality (IAQ) data has become an important area of research as the quality of air is closely related to human health and well-being. However, traditional statistics and shallow machine learning-based…

Machine Learning · Computer Science 2022-04-15 Yuanyuan Wei , Julian Jang-Jaccard , Wen Xu , Fariza Sabrina , Seyit Camtepe , Mikael Boulic

Bound-to-Bound Data Collaboration (B2BDC) provides a natural framework for addressing both forward and inverse uncertainty quantification problems. In this approach, QOI (quantity of interest) models are constrained by related experimental…

Optimization and Control · Mathematics 2019-04-02 Arun Hegde , Wenyu Li , James Oreluk , Andrew Packard , Michael Frenklach

The Clean Air Act mandates that the National Ambient Air Quality Standards (NAAQS) must be routinely assessed to protect populations based on the latest science. Therefore, researchers should continue to address whether exposure to levels…

Methodology · Statistics 2020-01-09 Georgia Papadogeorgou , Francesca Dominici