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## 3.6 Use Case Modifications

This topic describes the information about the use case modifications.

Use case definition may undergo the following modification and would require model re-training. After each re-training run, you should review the model details discussed under Model Explainability

Table 3-14 Use Case Modifications

Use Case Modification | Model Re-training Required | Correlation Analysis Required
--- | --- | ---
Data Source replaced by another data source | Yes | Yes
New column Added to existing data source | Yes | Yes
New columns Added to custom data source | Yes | Yes
Existing column removed from existing data source | Yes | Yes
Selected Algorithm Changed | Yes | No
Model Error statistic Changed | Yes | No
Partition Column Name list altered (added / removed) | Yes | Yes

Parent topic: Machine Learning Framework