• Previous lessons covered systems shaped like a single "input → output" pair, e.g. summarization or simple question-answering. 0:01
  • Many real AI applications are more complex than that — agents and chatbots — so a single input/output check is not enough. 0:01
  • This video presents a few general principles for evaluating these more complex systems. 0:17

The three principles the video develops:

  1. Break the system down into smaller testable components. 1:46
  2. Test only the final outcome, treating the system as a black box. 4:21
  3. Test the complete interaction (manually, programmatically, and online). 4:44