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. 2022 Apr 4;22:331. doi: 10.1186/s12879-022-07317-2

Fig. 3.

Fig. 3

The interaction effects of nonpharmaceutical intervention (NPI) pairs. A The overall SHapley Additive exPlanations (SHAP) interaction effect values and the ranking for each NPI pair. B The SHAP interaction values for international travel restriction and contact tracing. C The SHAP interaction values for mask wearing requirement and gathering limitation. The absence of cubes at the intersection of the X- and Y-axes is due to a lack of data. It does not indicate the lack of an interaction effect