12.5.B - Time-Series Cross-Validation
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Practice Questions
Test your understanding with targeted questions
What is the main purpose of time-series cross-validation?
💡 Hint: Think about why the order of data matters.
Name one technique used in time-series cross-validation.
💡 Hint: Remember we discussed a couple of methods.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main benefit of time-series cross-validation?
💡 Hint: Think about what is unique about time-series data.
True or False: In rolling window validation, the training set size increases with each iteration.
💡 Hint: Reflect on how the training set evolves.
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Challenge Problems
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You have a dataset of monthly sales over five years and need to forecast future sales using both rolling and expanding techniques. Design an evaluation strategy for both.
💡 Hint: Think about the practical implications of each method.
Critique a model that relied solely on rolling methods in an unstable market context. What issues might arise?
💡 Hint: Consider the nature of the dataset.
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