Fig. 5
From: Measuring China’s Policy Stringency on Climate Change for 1954–2022
SHAP Analysis of Feature Importance and Dependence. This composite figure combines a distribution plot and multiple dependence plots of SHAP values to illustrate the influence of PSCC features within an RF model. Plot (a) showcases the distribution of SHAP values for critical features, with the x-axis measuring the impact of these features on model output and the y-axis ranking the features by their importance. The color gradient from purple to yellow illustrates the range of feature values, aiding in the identification of features with the strongest predictive power. Plot (b) includes dependence plots for select high-importance features, depicting the relationship between SHAP values and feature values. The color scale indicates the feature’s PSCC, thereby demonstrating how variations in feature values correspond to the model’s output.
