Kofax Getting Started with Ascent Xtrata Pro - Manual (Page 87)

Chapter 3
68 Ascent Xtrata Pro User's Guide
parent, becomes the classification result and is given the maximum confidence from
among the children.
Note
You can avoid invoking this evaluation rule if you don’t select “Valid
classification result” in the Class Properties dialog box for Politik. If you do this the
document will be unclassified since Politik is prevented from becoming a
classification result.
Local Not-Flag
The Local Not-Flag is a special result of the Instruction Classifier. If the Instruction
Classifier has a confidence of less than -50% for a single class, it applies the Local
Not-Flag to this class. This flag is stored together with the confidence inside the
classification result and overrules any other result from a text classifier like the AFC.
Figure 3-7. Classification Rule – Local Not-Flag
The figure above shows the Classification Results dialog box that provides the
confidences for the different classification algorithms. To show the classification
results open a document in the document viewer, and select some text, and then
select Classify selection from the context menu.
The above example shows that the Instruction Classifier has applied the local Not-
Flag for Energiepolitik. Even if the Content Classifier (Adaptive Feature Classifier)
has assigned the highest confidence to this class, due to this rule the final
classification confidence for Energiepolitik becomes 0 (zero).