12.3.D - Leave-One-Out Cross-Validation (LOOCV)
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Practice Questions
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What does LOOCV stand for?
💡 Hint: Think about what each point in the dataset represents in this technique.
How many iterations does LOOCV perform on a dataset of 5 points?
💡 Hint: Each point gets a turn as the test set.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does LOOCV stand for?
💡 Hint: Think about what it means to leave one out!
LOOCV has high computational costs compared to k-fold cross-validation.
💡 Hint: Consider how many times the model is trained compared to k-fold.
1 more question available
Challenge Problems
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A company has collected 30 samples of customer data. If they wish to use LOOCV to evaluate their predictive model, calculate how many times the model needs to be trained.
💡 Hint: Remember, LOOCV trains on all but one sample each time.
Discuss the implications of using LOOCV for a dataset with 10,000 samples in terms of time and computational resources.
💡 Hint: Think about resource allocation and the cost-effectiveness of model validation.
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