Figure4
![Domain knowledge-guided interpretive machine learning: formula discovery for the oxidation behavior of ferritic-martensitic steels in supercritical water](https://image.oaes.cc/ecf4f9e7-c355-4c3b-9f08-bf2585533937/4762-4.jpg)
Figure 4. Joint SHAP value of two features and the derived oxidation Cr equivalent concentration. A-D: Joint SHAP value of two features, i.e., Cr with Si, Mn, Ni and V, respectively. E: Predicted values of Xgboost model versus experimental values with the transferred four features. F: Pure SHAP analysis of oxidation Cr equivalent concentration feature.