The same wildlife clip is tagged independently by two people and compared. Agreement is scored (percentage or a chance-corrected coefficient). A low score points to a weak guide, an ambiguous clip, or poor tagging — not automatically to a bad model. Which method is that?

Two independent tags on the same wildlife clip, scored for agreement (percentage or a chance-corrected coefficient), is multiple annotation and inter-annotator agreement. A low score points to a weak guide, an ambiguous clip, or poor tagging, not automatically to a bad model. A Chapter 6 A/B method and a single-annotator-only rule miss that method.