D499 DTSC 3221 Machine Learning FA REVIEW QUESTIONS & ANSWERS

D499 DTSC 3221 Machine Learning FA REVIEW QUESTIONS & ANSWERS

1. Which algorithm primarily relies on ensemble methods to
improve predictive accuracy?
 - A) K-Nearest Neighbors
 - B) Gradient Boosting Machines
 - C) Support Vector Machines
 - D) Linear Regression
 ANS: B) Gradient Boosting Machines
2. In the context of neural networks, which activation function is
most appropriate for binary classification problems?
 - A) ReLU
 - B) Sigmoid
 - C) Tanh
 - D) Softmax
 ANS: B) Sigmoid
3. Which optimization technique is commonly used to prevent
overfitting by adding a penalty on model complexity?
 - A) Batch Normalization