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Companies: Amazon Difficulty: Medium Frequency:  Low Question How would you solve the inconsistency between an offline metric and online A/B testing? Answer There are a few reasons this may be the…

Companies: Amazon Difficulty: Medium Frequency:  Low Question Can you explain what is a generative model? Answer Generative models model the joint probability $latex P(X, Y)$, where $latex X$ is the data…

Companies: Amazon Difficulty: Easy Frequency:  Medium Question What is a loss function? What is a cost function? Answer A loss function is calculated for a single training example. A cost function,…