COS326 L22 2024

Which of the following is a primary goal of data mining in knowledge discovery?

• Increasing data storage capacity

• Reducing data redundancy

• Optimizing resource utilization

• Identifying hidden patterns in data

Data mining is often applied to a data warehouse because:

• It requires live data from multiple sources

• It provides historical data for decision support

• It reduces the need for data preprocessing

• Data mining cannot be performed on raw data

What does the Apriori algorithm primarily focus on?

• Creating classification models

• Discovering frequent itemsets

• Optimizing database performance

• Sorting hierarchical data

In association rule mining, what is the 'support' of an itemset?

• The number of transactions containing all items in the itemset

• The percentage of items that are frequently bought together

• The likelihood of an itemset being popular in the future

• The conditional probability of itemset occurrence

Which of the following is a typical application of clustering in data mining?

• Predicting customer behavior

• Grouping similar items in a supermarket

• Generating classification models

• Detecting anomalies in transactional data