Calculation Groups

Calculation groups is a new option within the Power BI Desktop application that allows us to implement DAX calculation groups within the data model. They serve to simplify calculations when we use similar DAX expressions, where only the variable (expression) that appears in them varies. By adding them, the model is automatically optimized by removing implicit measures.

Model Explorer

You have probably noticed that in Power BI service Datasets have recently been replaced by Semantic Models. Model Explorer is a new feature of Power BI Desktop. It is located in the Model view, and enables views and work with complex semantic models that contain tables, relations, measures, roles, calculation groups, cultures, perspectives…