Which of the following techniques enables automation and iteration of code releases?
Answer(s): D
Continuous Integration/Continuous Deployment pipelines automate the building, testing, and delivery of code, enabling rapid, repeatable, and iterative releases with minimal manual intervention.
In a modeling project, people evaluate phrases and provide reactions as the target variable for the model. Which of the following best describes what this model is doing?
Answer(s): A
The model predicts people's reactions (e.g., positive, negative, neutral) to given phrases, which is the core of sentiment analysis.
A computer vision model is trained to identify cats on a training set that is composed of both cat and dog images. The model predicts a picture of a cat is a dog. Which of the following describes this error?
Classifying an actual cat (positive instance) as a dog (negative prediction) is a false negative, which corresponds to a Type II error.
Which of the following JOINS would generate the largest amount of data?
Answer(s): C
A CROSS JOIN produces the Cartesian product of the two tables (every row from the first paired with every row from the second), yielding far more rows than any of the other join types.
A data scientist built several models that perform about the same but vary in the number of features. Which of the following models should the data scientist recommend for production according to Occam's razor?
According to Occam's razor, when models perform equivalently, you choose the simplest one - in this case, the model that achieves the needed performance with the fewest features.
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