5.3.4. Labeling
Labeling
For Extractor Processors, when a Document is loaded into the Labeling Interface to aid in the Labeling Process the Extractor Processor will create Suggested Labels generated either during Auto-Labeling or from the Schema Definitions along with previously Labeled Documents. These Suggested Labels are regularly helpful for speeding up the Labeling Process, unfortunately not all Fields will receive reliable Suggested Labels and for Documents with complicated layouts or are poor-quality the Suggested Labels frequently become unusable. As a result, a significant portion of the Labeling Process involves reviewing and relabeling Suggested Labels at the same time a creating Labels for Unlabeled Fields. The primary aim of Labeling for an Extractor Processor is to ensure the defined Bounding Box of each Label includes the relevant Extracted Values that are generated by the OCR. Note: Every Bounding Box is required to include OCR identified Text; any Bounding Boxes without OCR identified Text will result in the entire document getting excluded during the Model Training and Testing, an Unlabeled Field is usually preferable.
Labeling is done by using the Bounding Box Labeling Style or the Select Text Labeling Style. The OGRRE Team found that using the Select Text Labeling Style for identifying Labelable Text (particularly Checkbox Data Type Labels) and switching to the Add Bounding Box Labeling Style to make a Label was often the fastest and easiest method.
While Labeling there are some common Label Errors that Labelers should expect to see. These Label Errors will fall into either Unfixable Label Errors that usually stem from the backend OCR component, and Fixable Label Errors that usually stem from generation of Suggested Labels. Note: Label Errors tend to be visually subtle and require Labelers to maintain sufficient focus to detect them, and Labeling can be very boring making the change of losing focus a near guarantee.
Common Unfixable Label Errors
Checkbox Value Error
Extra Character Error
Wrong Character Error
Combine "Word" Error
Failed Detection Error
Hallucination Error
Department Stamps
Poor Quality Scan
Field Abuse
Common Fixable Label Errors
Mismatched Field
Mismatched Fields are fixed by changing the Field of the Label through either the Editing Interface or the Bounding Box Popup.
Overlapping Labels
Overlapping Labels are fixed by deleting Labels. Overlapping Labels are also often paired with Mismatched Fields and will involve changing the Field of the Label.
Multiple Table Rows in a Single Table Label Instance
Suggested Labels for Tables sometimes will capture multiple rows under a single Table Label instance. Fixing this requires deleting the extra rows and relabeling in new Table Label instance. Sometimes it may be simpler to delete the entire suggested Table Label.
