Question 1

The number of rows and columns of the three matrices A , B. and C is 3 rows and 2 columns, 2 rows. 3

columns. 3 rows and 3 columns. which of the following operations is meaningful?

Options :

A : AC

B : BC

C : A+B

D : AB-BC

Answer: B

Question 2

In the gradient descent algorithm, which of the following algorithms is the most confusing algorithm for the

trajectory on the loss function surface?

Options :

A : SGD

B : BGD

C : MGD

D : MBGD

Answer: A

Question 3

In which year was the first introduction of "artificial intelligence"?

Options :

A : 1946

B : 1960

C : 1916

D : 1956

Answer: D

Question 4

The trace operation returns the sum of the diagonal elements of the matrix. Therefore, the trace of matrix A

and its transposed matrix are equal

Options :

A : True

B : False

Answer: A

Question 5

When dealing with actual problems, when should machine learning be used in the following situations?

Options :

A :

The data distribution itself changes over time, requiring continuous re-adaptation of the program, such

as predicting the trend of merchandise sales

B :

The complexity of the rules is low, and the problem is small

C : Task rules will change over time, such as defect detection on the production line

D : The rules are very complicated or cannot be described, such as face recognition and voice recognition

Answer: A,C,D

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