CS 7643 Master Exam Bank | Quiz 1,2& 3
(Questions & Answers) | 2025/2026 Update |
100% Correct – Georgia Tech
CS 7643 Quiz 1 | Questions and Answers
1. Which of the following is False about parametric models?
A. Softmax Regression Model is one of them
B. The number of parameters is associated with the number of data, not
the dimension of data features
C. They try to model a function
D. Can return probability score per class, with labels acquired via
argmax function
Correct Answer: B
2. Which of the following is a non-parametric model?
A. Neural Networks
B. Naïve Bayes
C. Logistic Regression
D. K-NN
Correct Answer: D
,3. Which of the following is a key drawback of non-parametric models
such as K-NN?
A. They assume a fixed number of parameters
B. They cannot handle nonlinear boundaries
C. They require storing large amounts of training data for prediction
D. They are less flexible in modeling complex functions
Correct Answer: C
4. In Logistic Regression, the decision boundary is defined by:
A. A nonlinear function of the input features
B. A linear combination of input features passed through a sigmoid
C. A similarity measure based on Euclidean distance
D. A hierarchical tree-based partitioning of data
Correct Answer: B
5. The main difference between Maximum Likelihood Estimation
(MLE) and Maximum A Posteriori (MAP) is:
A. MLE incorporates priors, MAP does not
B. MAP incorporates priors, MLE does not
C. Both incorporate priors but in different ways
D. Neither uses priors, they are identical
Correct Answer: B
6. Which of the following is not a property of Naïve Bayes?
, A. Assumes independence among features
B. Works well with high-dimensional data
C. Requires storing all training examples for prediction
D. Uses Bayes’ theorem for classification
Correct Answer: C
7. Which of the following activation functions is most likely to suffer
from the vanishing gradient problem?
A. ReLU
B. Tanh
C. Sigmoid
D. Leaky ReLU
Correct Answer: C
8. Dropout in neural networks is primarily used to:
A. Speed up convergence
B. Reduce overfitting
C. Normalize input data
D. Increase model parameters
Correct Answer: B
9. Which loss function is commonly used in logistic regression?
A. Mean Squared Error
B. Hinge Loss
C. Cross-Entropy Loss
(Questions & Answers) | 2025/2026 Update |
100% Correct – Georgia Tech
CS 7643 Quiz 1 | Questions and Answers
1. Which of the following is False about parametric models?
A. Softmax Regression Model is one of them
B. The number of parameters is associated with the number of data, not
the dimension of data features
C. They try to model a function
D. Can return probability score per class, with labels acquired via
argmax function
Correct Answer: B
2. Which of the following is a non-parametric model?
A. Neural Networks
B. Naïve Bayes
C. Logistic Regression
D. K-NN
Correct Answer: D
,3. Which of the following is a key drawback of non-parametric models
such as K-NN?
A. They assume a fixed number of parameters
B. They cannot handle nonlinear boundaries
C. They require storing large amounts of training data for prediction
D. They are less flexible in modeling complex functions
Correct Answer: C
4. In Logistic Regression, the decision boundary is defined by:
A. A nonlinear function of the input features
B. A linear combination of input features passed through a sigmoid
C. A similarity measure based on Euclidean distance
D. A hierarchical tree-based partitioning of data
Correct Answer: B
5. The main difference between Maximum Likelihood Estimation
(MLE) and Maximum A Posteriori (MAP) is:
A. MLE incorporates priors, MAP does not
B. MAP incorporates priors, MLE does not
C. Both incorporate priors but in different ways
D. Neither uses priors, they are identical
Correct Answer: B
6. Which of the following is not a property of Naïve Bayes?
, A. Assumes independence among features
B. Works well with high-dimensional data
C. Requires storing all training examples for prediction
D. Uses Bayes’ theorem for classification
Correct Answer: C
7. Which of the following activation functions is most likely to suffer
from the vanishing gradient problem?
A. ReLU
B. Tanh
C. Sigmoid
D. Leaky ReLU
Correct Answer: C
8. Dropout in neural networks is primarily used to:
A. Speed up convergence
B. Reduce overfitting
C. Normalize input data
D. Increase model parameters
Correct Answer: B
9. Which loss function is commonly used in logistic regression?
A. Mean Squared Error
B. Hinge Loss
C. Cross-Entropy Loss
