Question 1
Which of the following 3 × 3 matrices have rank 2 with column space equal to row space?

The IIT Madras BS Machine Learning Foundations (MLF) Quiz 1 paper sat on 27 Oct 2024, in the September 2024 term: 12 questions for 40 marks in 120 minutes. Every question is below with its answer. Take it as a timed mock test to be marked, or read it through first.
Which of the following 3 × 3 matrices have rank 2 with column space equal to row space?
Correct answers
B has eigenvalues -4, 8, 70.
A has eigenvalues 1, 16, 81.
B is an upper triangular matrix.
B is a lower triangular matrix.
Correct answers
B has eigenvalues -4, 8, 70.
B is an upper triangular matrix.
Correct answers
Correct answers
Correct answers
Determine which of the following limits yields a finite value.
Correct answers
Yes
No
Insufficient information
Correct answer
Yes
Consider the following input data points:
| [0, 1, 1] | -1 |
| [0, 1, 0] | -1 |
| [1, 1, 3] | +1 |
| [1, 0, 5] | +1 |
| [0, 0, 6] | +1 |
| [1, 0, 4] | +1 |
Which among the following models has the least misclassification error?
Hint: Consider
Correct answer
3
2
-2
1
Correct answer
-2
Correct answer
Correct answer: 1.5
Correct answer: 0.4