We now review the topic of model validation: (a) Explain how validation set approach is implemented. What are its main disadvantages? (b) Explain how the leave-one-out cross-validation is implemented (LOOCV). How does it improve on validation set approach? (c) What is the main disadvantage of LOOCV approach? Hint: Imagine we have 10000 observations and 20 variables. (d) Could we use validation set & LOOCV for any supervised learning approach? Or only for KNN? Please read the question and answer througly in complete sentences into words.

We now review the topic of model validation: (a) Explain how validation set approach is implemented. What are its main disadvantages? (b) Explain how the leave-one-out cross-validation is implemented (LOOCV). How does it improve on validation set approach? (c) What is the main disadvantage of LOOCV approach? Hint: Imagine we have 10000 observations and 20 variables. (d) Could we use validation set & LOOCV for any supervised learning approach? Or only for KNN? Please read the question and answer througly in complete sentences into words.

MARKETING 2018

19th Edition

ISBN:9780357033753

Author:Pride

Publisher:Pride

Chapter1: An Overview Of Strategic Marketing

Section1.2: Dollar Shave Club: The Company For Men

Problem 1C

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