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. Author manuscript; available in PMC: 2023 Jun 26.
Published in final edited form as: J Expo Sci Environ Epidemiol. 2022 Nov 9;32(6):908–916. doi: 10.1038/s41370-022-00493-y

Table 3.

Model evaluation results comparing linear regression with NGBoost based on reference measurement range – RMSE.

Reference PM2.5 Range (μg/m3) RMSE (μg/m3)
Linear Regression NGBoost NGBoost Improvement Count of Hours
15–20 4 3.1 22% 1076
20–25 5.9 4.6 21% 292
25–30 7.4 4.8 35% 114
30+ 13.6 9.5 30% 116