Lesson 4 Flashcards
1
Q
Vector has _________ and direction
A
Magnitude
2
Q
Matrix has ____ dimensions
A
2
3
Q
Matrix with equal number of rows and columns is called ___________ matrix
A
Square
4
Q
Matrix, where off-diagonal elements are same, is called : ________
eg: [1,2,3; 2,5,1;3,1,6]
A
Symmetric
5
Q
Curly brackets in python denote ______ or ___________.
A
Set or dictionary
6
Q
Dictionary in python is a set of __ - _____ pairs
A
Key - value
7
Q
What is the magnitude of null set
A
0
8
Q
What is null set denoted by
A
phi symbol
9
Q
Subset notation?
A
10
Q
proper subset notation
A
11
Q
Formula for jaccard measure
A
a intersection b / a U B
12
Q
What range does jaccard value have
A
0 -1
13
Q
What does jaccard value quantify
A
similarities between sets
14
Q
What does JS(A,B) = 0.2 mean
A
That the sets are disssimilar
15
Q
Matrix multiplication is commutative. True or false
A
False
