Data Pinciples week 6 part 2

How many transactions are there in the database D mentioned in Example 4?

• 7

• 8

• 9

• 10

What is the minimum support count required in Example 4?

• 22%

• 2

• 70%

• 9

What algorithm is used to find out the frequent itemsets in Example 4?

• K-means algorithm

• Apriori algorithm

• Decision tree algorithm

• Neural network algorithm

What is the minimum confidence required for the association rules in Example 4?

• 22%

• 50%

• 70%

• 90%

What is the minimum support count used to determine frequent 1-itemsets in Step 1 of the algorithm?

• 1

• 2

• 3

• 4

How many itemsets are considered as frequent 1-itemsets after comparing with the minimum support count?

• 3

• 4

• 5

• 2

Which itemsets are excluded from the frequent 1-itemsets due to not meeting the minimum support count?

• {1} and {2}

• {3} and {4}

• {4} and {5}

• {2} and {3}

What is the first step in generating a 2-itemset frequent pattern according to the image?

• Scan D for count of each candidate

• Generate C2 candidates from L1

• Compare candidate support count with minimum support

• Create a cartesian product L_k-1 x L_k-1

Which itemset does NOT meet the minimum support count and is highlighted in red in the image?

• {I1, I2}

• {I1, I3}

• {I1, I4}

• {I2, I3}

After comparing the candidate support count with the minimum support, what is the label given to the itemsets that meet the required count?

• C2

• L2

• D

• L1