Fig. 1: Overview of the methodology applied in this study. | npj Sustainable Mobility and Transport

Fig. 1: Overview of the methodology applied in this study.

From: A citywide spatiotemporal perspective of particulate matter concentration on underground subway platforms

Fig. 1

The data of this study were collected at four underground subway stations in Shanghai for AM, noon, and PM periods during weekdays and weekends for four seasons, followed by data pre-processing and model selection. We selected Random Forest with SHAP value for influencing factor analysis, applied the model to all the subway stations in the whole city, and analyzed the association between the PM concentration, exposure, and the point-of-interest distribution.

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