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To increase the capacity of 5G base stations, they need to consider the factors such as a large
number of base stations, more spectrum and an increased spectral efficiency per cell;
meaning it has the principle of massive MIMO. The MIMO stands for

(^) Massive In Massive Out (B) Many Input Many Output
(C) Multiple In Multiple Out (D) Multiple Input Multiple Output

Poor performance of a machine learning model on both training and testing data indicates
which of the following?

(4) Overfitting (B) Variance
(@ Underfitting (D) Regularization

Which of the following is not true about Gradient Descent technique in machine learning?
(^) It is used when there is no analytical solution
(B)_ It is used to reach the maximum of the cost function

(C) It is used when the hypothesis space contains continuously parameterized
hypotheses

(D) It is an iterative optimization algorithm

Which of the following is a statistical measure of the effectiveness of an attribute in
classifying the training data?

(^) Entropy (B) Information Gain
(C) Gini index (0) ID3

Which of the following are true about Principal Component Analysis (PCA)?
൫ PCA minimizes the sum of squares of projection errors
(ii) It isan unsupervised method
(111) It is a feature extraction method
(iv) PCA works when the data lies in a linear subspace
(ಯ) @, Gi) and (iii) (B) (0, (10) ೩೧೮ (1)
(0). 09) ೩೧6 (1) (0) (0, Gi), Gii) and (iv)

Find the odd one out :
(4) Agglomerative ൯) k-Means
(0) Apriori (D) DBSCAN

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