Iterative Refinement
No one writes a perfect prompt on the first try. Iterative refinement is the process of testing, analyzing, and tweaking prompts to improve results. It’s like editing a draft – you start rough, test, and polish.
Iterative refinement = write prompt → test → observe errors → improve → repeat.
The 5‑Step Loop
- Write an initial prompt based on your understanding of the task.
- Run it on a few test inputs (not the full dataset).
- Analyze the outputs – what went wrong? Vague? Wrong format? Hallucinations?
- Modify the prompt (add constraints, examples, or restructure).
- Repeat until outputs are satisfactory.
A/B Testing Prompts
Instead of guessing, run two versions side by side on the same input. Compare outputs.
Prompt A: "Summarize this text."
Prompt B: "Summarize this text in 2 bullet points. Each bullet point under 15 words."What to Track During Testing
- Correctness: Did it answer correctly?
- Format adherence: Did it follow instructions?
- Length: Too short or too long?
- Edge cases: How does it behave with empty input or very long input?
Practical Tip: Keep a Log
For each prompt version, write down what changed and what improved. Without a log, you will repeat mistakes.
Two Minute Drill
- Iterative refinement = test, analyze, improve, repeat.
- A/B test two prompt versions on the same input.
- Track correctness, format, length, and edge cases.
- Keep a log of changes and results.
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