PBC Tour (3/4)
Calculating the accuracy and reloading training data
You have seen a visualization of splitting decisions made by an algorithm.
If the mouse pointer is moved to the main panel of an already split node,
the cursor changes to the "Disabled mode" where the user is not allowed
to perform on the visualization of the node. You can calculate the accuracy
of the computed tree with the menu option "Operation -> Calculate error
rate" and the selection of "./TestData/segment.test".
Now load the same file ("segment.train") once more (this time, we can
select this file from the "File"menu as a MRU file. You will get a fresh
representation of the training data set and the decision tree on the right
side is initialized. Now you will work in the main panel directly upon
the visualization.