# Initial Training Set

1. When you first add a tool, but have not defined a training set, if you press the Train icon, you will see the following:

   Note: Before pressing the Train icon, first label one or more views.

2. This launches the Select Training Set dialog.

   Note: You can also launch the Select Training Set dialog by pressing the link in the Training Tool Parameters.
3. If you have not previously defined Image Sample Sets, use the Select training set from all views option.
4. Then define the Selection, which determines the percentage of labeled images/views from your training set which will randomly be selected to be used to train the tool.

5. If you have previously defined Image Sample Sets, use the Select training set from Image Sets option.

6. Select the previously defined Image Sample Sets from the list.

7. Define the Selection, which determines the percentage of labeled images/views from your training set which will randomly be selected to be used to train the tool.

   Note:

   When using the Select training set from Image Sets option, the selection percentage is based on the combined total number of images/views from the selected image sets, not a percentage from each individual set. The selection is done to best ensure coverage of all classes trained.

   For example, if you have three training image sets, where A contains 20 samples, B contains 10, and C contains 40 (70 total), and your Selection is the default 50%, the tool may randomly select 5 images from A, 8 from B and 22 from C (35 views).

8. Press the OK button to accept the training set configuration.

9. Images that are included in the training set will be denoted in their image file information section.