Data mining quiz 13.02.23

What do you mean by support of (A)

• Total number of transaction containing A

• Total number of transaction containing not

• Number of transaction containing A/ Total number of transaction

• Number of transaction not containing A/ Total number of transaction

Which of the following is direct application of frequent itemset mining?

• Social network analysis

• Market basket analysis

• Outliers detection

• Intrusion detection

If we know the support of itemset{a, b} is 10.

Which of the following numbers are the possible supports of itemsets{a, b, c}?

• 9

• 10

• 11

• 12

What is the effect of reducing min confidence criteria on the same?

• Number of association rules remains same

• Some association rules will add to the current set of association rules

• Some association rules will become invalid while others might become rule

• Can not say

Choose which data mining task is most suitable for the following scenario: identifying an unexpected/unusual amount of spending

• Prediction

• Sequential pattern analysis

• Association rules

• Anomaly detection