KwickClips Python · 40 sec · free
What does random guessing give with three species?
Short answer. About 33 percent.
Why does the size of the test set matter?
With only 30 items, a single mistake changes the score by 3.3 percent.
Ask three questions
| Better than guessing? |
| Which answers were wrong? |
| How big is the test set? |
Remember
| One number is not the story |
| Check the mistakes |
Your model scored ninety percent. Is that good? Ask three questions. Is it better than guessing? Which answers were wrong? Is the test set big enough to trust? Two rules. One number is not the story. Check the mistakes.
This clip is from the full lesson: Machine Learning in Python with Scikit-learn — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 11 Artificial Intelligence (843)
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