Public lessons and worked examples
Read without signing in. These introductions use original teaching scenarios. Exercises and learning records require an account; paid textbooks require purchase.
Introduction to image bounding boxes
Learn target scope, occlusion boundaries and visible evidence with original examples.
Introduction to text span annotation
Distinguish entities, context and negation using original text examples.
Introduction to comparing model responses
Compare answers against explicit requirements, factual accuracy and uncertainty.
Basketball video annotation guide
Use player identity and evidence across frames to understand occlusion, events and review.
Tennis video annotation guide
Separate visible contact evidence, inferred trajectories and uncertain events.
Film and television annotation guide
Understand shot changes, character identity, actions and narrative inference.
Preparing for a data annotation interview
Use original scenarios to learn rule clarification, evidence and quality correction.