The statement 'Minimum support percent should be 50 (0.5)' for association rules is:

Prepare for the Data Mining Test with our comprehensive quizzes. Practice with various question types, each with hints and explanations. Boost your understanding and ensure success on your exam!

Multiple Choice

The statement 'Minimum support percent should be 50 (0.5)' for association rules is:

Explanation:
Minimum support sets the minimum fraction of all transactions in which an itemset must appear to be considered for rule generation. It is not fixed at 50%; it depends on the dataset and what you’re trying to discover. In many real-world datasets, frequent patterns occur much less than half of the transactions, so setting a high threshold like 50% would prune away most associations and you’d miss useful rules. Practically, you choose a threshold that balances finding interesting patterns with computational efficiency, often much lower than 0.5 (for example, 0.01 to a few percent) depending on dataset size, sparsity, and domain goals.

Minimum support sets the minimum fraction of all transactions in which an itemset must appear to be considered for rule generation. It is not fixed at 50%; it depends on the dataset and what you’re trying to discover. In many real-world datasets, frequent patterns occur much less than half of the transactions, so setting a high threshold like 50% would prune away most associations and you’d miss useful rules. Practically, you choose a threshold that balances finding interesting patterns with computational efficiency, often much lower than 0.5 (for example, 0.01 to a few percent) depending on dataset size, sparsity, and domain goals.

Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy