Alahamade, Wedad, Lake, Iain, Reeves, Claire E. and De La Iglesia, Beatriz (2020) Clustering Imputation for Air Pollution Data. In: Hybrid Artificial Intelligent Systems. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) . Springer International Publishing AG, Cham, pp. 585-597. ISBN 978-3-030-61705-9

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Abstract

Air pollution is a global problem. The assessment of air pollution concentration data is important for evaluating human exposure and the associated risk to health. Unfortunately, air pollution monitoring stations often have periods of missing data or do not measure all pollutants. In this study, we experiment with different approaches to estimate the whole time series for a missing pollutant at a monitoring station as well as missing values within a time series. The main goal is to reduce the uncertainty in air quality assessment. To develop our approach we combine single and multiple imputation, nearest neighbour geographical distance methods and a clustering algorithm for time series. For each station that measures ozone, we produce various imputations for this pollutant and measure the similarity/error between the imputed and the real values. Our results show that imputation by average based on clustering results combined with multiple imputation for missing values is the most reliable and is associated with lower average error and standard deviation.

Item Type:	Book Section
Uncontrolled Keywords:	air quality,imputation,time series clustering,uncertainty,theoretical computer science,computer science(all) ,/dk/atira/pure/subjectarea/asjc/2600/2614
Faculty \ School:	Faculty of Science > School of Computing Sciences Faculty of Science > School of Environmental Sciences Faculty of Science > Tyndall Centre for Climatic Change
Related URLs:	http://www.scopus.com/inward/record.url?...
Depositing User:	LivePure Connector
Date Deposited:	12 Nov 2020 01:22
Last Modified:	09 Feb 2021 00:36
URI:	https://ueaeprints.uea.ac.uk/id/eprint/77669
DOI:	10.1007/978-3-030-61705-9_48

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