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Smart city article details

Title	Air Quality Prediction In Smart Cities Using Machine Learning Technologies Based On Sensor Data: A Review
ID_Doc	7169
Authors	Iskandaryan D.; Ramos F.; Trilles S.
Year	2020
Published	Applied Sciences (Switzerland), 10, 7
DOI	http://dx.doi.org/10.3390/app10072401
Abstract	The influence of machine learning technologies is rapidly increasing and penetrating almost in every field, and air pollution prediction is not being excluded from those fields. This paper covers the revision of the studies related to air pollution prediction using machine learning algorithms based on sensor data in the context of smart cities. Using the most popular databases and executing the corresponding filtration, the most relevant papers were selected. After thorough reviewing those papers, the main features were extracted, which served as a base to link and compare them to each other. As a result, we can conclude that: (1) instead of using simple machine learning techniques, currently, the authors apply advanced and sophisticated techniques, (2) China was the leading country in terms of a case study, (3) Particulate matter with diameter equal to 2.5 micrometers was the main prediction target, (4) in 41% of the publications the authors carried out the prediction for the next day, (5) 66% of the studies used data had an hourly rate, (6) 49% of the papers used open data and since 2016 it had a tendency to increase, and (7) for efficient air quality prediction it is important to consider the external factors such as weather conditions, spatial characteristics, and temporal features.
Author Keywords	Air pollution; Air quality prediction; Machine learning; Smart cities

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