CS计算机代考程序代写 Information Management – Assignment 3 – Answer Sheet Total:_______

Information Management – Assignment 3 – Answer Sheet Total:_______

Student Name :

Student ID :

Class code :

Question 1 (40 marks) Q1 total:

C

19
2020

20

(2 marks)

21

(3 marks)

22

(3 marks)

23

(3 marks)

24

(2 marks)

25

26
2020

27

(1 mark)

28

29

30

(1 mark)

31

(1 mark)

32

(1 mark)

33

34

(1 mark)

35

(1 mark)

36

(1 mark)

37

(1 mark)

38

(1 mark)

39

(1 mark)

40

(2 marks)

41

(1 mark)

42

43

(1 mark)

44

(2.5 marks)

45

(5 marks)

46

(2 marks)

47

48
2020

49

(0.5 mark)

50

(0.5 mark)

51

(0.5 mark)

52

(2 marks)

Question 2 (20 marks) Q2 total:
a. (2 marks)
e.g.
Support{X,Y}

=3/10
=0.3

1)
Support{P}

=
=

2)
Support{Q,S}

=
=

3)
Support{P,Q,S}

=
=

b. (2 marks)
e.g.
Confidence (X Y)

= Support{X,Y} / Support{X }
=0.3/0.7
=0.43

1)
Confidence (QS P)

=
=
=

2)
Confidence (P QS)

=
=
=

Is confidence a symmetric measure?
Ans: ____________________________________

c. (10 marks)
Please show your working steps in the table below.
Note: You may add or delete row(s) in the tables below if necessary.
Itemsets
Support
>= minimum support?
(Y or N)

e.g. {X}
=3/10 =0.3
N

Result:
Note: You may add or delete row(s) in the tables below if necessary.

Frequent itemsets
Support

1)

2)

3)

4)

5)

6)

7)

8)

9)

10)

11)

12)

13)

d. (4 marks)
Note: You may add or delete row(s) in the tables below if necessary.
e.g.
Confidence (X Y)

= Support{X,Y} / Support{X }
=0.3/0.7
=0.43

1)

=
=
=

2)

=
=
=

3)

=
=
=

4)

=
=
=

5)

=
=
=

6)

=
=
=

7)

=
=
=

8)

=
=
=

9)

=
=
=

10)

=
=
=

11)

=
=
=

12)

=
=
=

e. (2 marks)
e.g.
Lift (X Y)

= Support{X,Y} / (Support{X} * Support{Y})
=0.3 / (0.7*0.5)
=0.86

1)

=
=
=

2)

=
=
=

3)

=
=
=

Question 3 (10 marks) Q3 total:

a. (2 marks)

b. (3 marks)

c. (5 marks)

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