Azure Data Scientists Associate Practice Exam

How does Bayesian Sampling improve hyperparameter optimization?

1. By strictly applying past results

2. By using random selections only

3. By balancing exploration and exploitation

4. By eliminating unnecessary parameters

The correct answer is: By balancing exploration and exploitation

Bayesian Sampling enhances hyperparameter optimization by focusing on the balance between exploration and exploitation. In this context, exploration refers to the process of trying out various hyperparameter configurations to discover potential regions in the hyperparameter space that could yield better results, while exploitation involves utilizing the information gained from past evaluations to make informed choices about which areas to sample next. This dual approach allows for a more systematic search for optimal hyperparameters compared to methods that rely solely on random selections or strictly following past results. By modeling the uncertainty of the hyperparameter space, Bayesian techniques can intelligently converge towards the most promising areas while still allowing for sufficient exploration of other regions. As a result, this leads to a more efficient use of computational resources and potentially improved model performance due to finding better hyperparameter configurations. The other choices do not accurately encapsulate the essence of Bayesian Sampling in the hyperparameter optimization context, as they either oversimplify the process or mischaracterize its purpose in the search for optimal parameters.