Different covariate shifts
As a data scientist working for a music streaming company, you have developed a model that detects when users may cancel their subscriptions. During development, the majority of users were young, with only 1% above the age of 50. However, after deploying the model in production, you have noticed that the percentage of users above 50 has increased to 20%.
What is the name of this change, and what impact does it have on performance?
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