Question: Question 3 ( 1 5 marks ) Given the following transaction database from a supermarket: Transaction ID items T 1 I 1 , I 2

Question

3 (15

marks

)

Given the following transaction database from a supermarket:

Transaction ID

items

T

1

I

1,

I

2,

I

3

T

2

I

2,

I

3,

I

4

T

3

I

4,

I

5

T

4

I

1,

I

2,

I

4

T

5

I

1,

I

2,

I

3,

I

5

T

6

I

1,

I

2,

I

3,

I

4

What are the frequent itemsets after running Apriori algorithm on the above transaction database with a minimum support of

50 % ?

Calculate the following confidence:

{

I

1,

I

2} = > {

I

3}

{

I

2} = > {

I

1,

I

3}

{

I

1,

I

3} = > {

I

2}

Calculate the following lift:

{

I

2} = > {

I

3}

{

I

2} = > {

I

4}

{

I

1,

I

3} = > {

I

2}

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