ODM 11gR2–Using different data sources for Build and Testing a Model

There are 2 ways to connect a data source to the Model build node in Oracle Data Miner.

The typical method is to use a single data source that contains the data for the build and testing stages of the Model Build node. Using this method you can specify what percentage of the data, in the data source, to use for the Build step and the remaining records will be used for testing the model. The default is a 50:50 split but you can change this to what ever percentage that you think is appropriate (e.g. 60:40). The records will be split randomly into the Built and Test data sets.

The second way to specify the data sources is to use a separate data source for the Build and a separate data source for the Testing of the model.

To do this you add a new data source (containing the test data set) to the Model Build node. ODM will assign a label (Test) to the connector for the second data source.

If the label was assigned incorrectly you can swap what data sources. To do this right click on the Model Build node and select Swap Data Sources from the menu.