Missing Data Estimation in a Low-Cost Sensor Network for Measuring Air Quality: a Case Study in Aburrá Valley

According to the World Health Organization (WHO), air pollution is currently one leading cause of death around the world. As a result, some projects have emerged to monitor air quality through the implementation of low-cost Wireless Sensor Networks (WSNs). However, the type of technology and the sen...

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Published inWater, air, and soil pollution Vol. 232; no. 10
Main Authors Rivera-Muñoz, León M., Gallego-Villada, Juan D., Giraldo-Forero, Andrés F., Martinez-Vargas, Juan D.
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 01.10.2021
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Abstract According to the World Health Organization (WHO), air pollution is currently one leading cause of death around the world. As a result, some projects have emerged to monitor air quality through the implementation of low-cost Wireless Sensor Networks (WSNs). However, the type of technology and the sensors’ location have an impact on data quality, resulting in a considerable amount of missing data. This hinders the proper implementation of methodologies for sensor calibration and data leverage for dispersion analysis of pollutants and prediction of pollution episodes. This paper presents a methodology based on matrix factorization (MF) to recover missing data from a low-cost WSN for particulate matter PM2.5 measurement. Using the proposed methodology with the study case in Aburrá Valley, Colombia, it is shown that is possible to recover 40 % missing data with less than 12 % errors, obtaining better results than those presented by other methods found in the literature.
AbstractList According to the World Health Organization (WHO), air pollution is currently one leading cause of death around the world. As a result, some projects have emerged to monitor air quality through the implementation of low-cost Wireless Sensor Networks (WSNs). However, the type of technology and the sensors’ location have an impact on data quality, resulting in a considerable amount of missing data. This hinders the proper implementation of methodologies for sensor calibration and data leverage for dispersion analysis of pollutants and prediction of pollution episodes. This paper presents a methodology based on matrix factorization (MF) to recover missing data from a low-cost WSN for particulate matter PM2.5 measurement. Using the proposed methodology with the study case in Aburrá Valley, Colombia, it is shown that is possible to recover 40 % missing data with less than 12 % errors, obtaining better results than those presented by other methods found in the literature.
According to the World Health Organization (WHO), air pollution is currently one leading cause of death around the world. As a result, some projects have emerged to monitor air quality through the implementation of low-cost Wireless Sensor Networks (WSNs). However, the type of technology and the sensors’ location have an impact on data quality, resulting in a considerable amount of missing data. This hinders the proper implementation of methodologies for sensor calibration and data leverage for dispersion analysis of pollutants and prediction of pollution episodes. This paper presents a methodology based on matrix factorization (MF) to recover missing data from a low-cost WSN for particulate matter PM2.5 measurement. Using the proposed methodology with the study case in Aburrá Valley, Colombia, it is shown that is possible to recover 40% missing data with less than 12% errors, obtaining better results than those presented by other methods found in the literature.
ArticleNumber 436
Audience Academic
Author Rivera-Muñoz, León M.
Gallego-Villada, Juan D.
Giraldo-Forero, Andrés F.
Martinez-Vargas, Juan D.
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  surname: Rivera-Muñoz
  fullname: Rivera-Muñoz, León M.
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  organization: Instituto Tecnológico Metropolitano (ITM)
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  givenname: Juan D.
  surname: Gallego-Villada
  fullname: Gallego-Villada, Juan D.
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  givenname: Andrés F.
  surname: Giraldo-Forero
  fullname: Giraldo-Forero, Andrés F.
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  givenname: Juan D.
  surname: Martinez-Vargas
  fullname: Martinez-Vargas, Juan D.
  organization: Instituto Tecnológico Metropolitano (ITM)
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SubjectTerms Air pollution
Air quality
Air quality measurements
Atmospheric Protection/Air Quality Control/Air Pollution
Case studies
Climate Change/Climate Change Impacts
Earth and Environmental Science
Economic aspects
Environment
Environmental monitoring
Hydrogeology
Information management
Low cost
Measurement
Methods
Missing data
Outdoor air quality
Particulate matter
Pollutants
Sensors
Soil Science & Conservation
Suspended particulate matter
Valleys
Water Quality/Water Pollution
Wireless sensor networks
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Title Missing Data Estimation in a Low-Cost Sensor Network for Measuring Air Quality: a Case Study in Aburrá Valley
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