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Upgrade to ProYou are a Staff Data Scientist at Amazon. Amazon's Customer Analytics team is building a Customer Lifetime Value model. They want to demonstrate that the simple linear baseline doesn't overfit catastrophically: train R² and test R² should be close. If test R² collapses, the model is memorizing — and they need regularization.
You are a Staff Data Scientist at Amazon. Amazon's Customer Analytics team is building a Customer Lifetime Value model. They want to demonstrate that the simple linear baseline doesn't overfit catastrophically: train R² and test R² should be close. If test R² collapses, the model is memorizing — and they need regularization.