tell me more icon Analyze Data Used by Models

Right-click the classification node; select View Models and pick the SVM model. (The name of the SVM model starts with CLAS_SVM.) Click the Compare tab; you see both aggregated and non-aggregated data:

compare tab of SVM model viewer

The Decision Tree (DT) Model does not use any of the aggregated data because DT does not support nested data; nested data in the input is automatically ignored.

If you want to see which attributes were used to build a model, view the model, click the Settings tab and then click the Inputs tab.