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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/14293


    Title: A mixed spatial prediction model in estimating spatiotemporal variations in benzene concentrations in Taiwan
    Authors: Hsu, CY;Xie, HX;Wong, PY;Chen, YC;Chen, PC;Wu, CD
    Contributors: National Institute of Environmental Health Sciences
    Abstract: It is well known benzene negatively impacts human health. This study is the first to predict spatial-temporal variations in benzene concentrations for the entirety of Taiwan by using a mixed spatial prediction model integrating multiple machine learning algorithms and predictor variables selected by Land-use Regression (LUR). Monthly benzene concentrations from 2003 to 2019 were utilized for model development, and monthly benzene concentration data from 2020, as well as mobile monitoring vehicle data from 2009 to 2019, served as external data for verifying model reliability. Benzene concentrations were estimated by running six LUR-based machine learning algorithms; these algorithms, which include random forest (RF), deep neural network (DNN), gradient boosting (GBoost), light gradient boosting (LightGBM), CatBoost, extreme gradient boosting (XGBoost), and ensemble algorithms (a combination of the three best performing models), can capture how nonlinear observations and predictions are related. The results indicated conventional LUR captured 79% of the variability in benzene concentrations. Notably, the LUR with ensemble algorithm (GBoost, CatBoost, and XGBoost) surpassed all other integrated methods, increasing the explanatory power to 92%. This study establishes the value of the proposed ensemble-based model for estimating spatiotemporal variation in benzene exposure.
    Date: 2022-08
    Relation: Chemosphere. 2022 Aug;301:Article number 134758.
    Link to: http://dx.doi.org/10.1016/j.chemosphere.2022.134758
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0045-6535&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000799290800005
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85129309668
    Appears in Collections:[陳保中] 期刊論文
    [陳裕政] 期刊論文

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