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We have a relation, where each record is an \"itemset\" and shows all the weathe

ID: 3571608 • Letter: W

Question

We have a relation, where each record is an "itemset" and shows all the weather phenomena of a particular day (as a "transaction" in the market basket model). Suppose we discover an association rule {darkClouds. ram} {thunder} with support 0.45 and confidence 0.7. Which of the following conclusion is correct? Dark clouds and rain likely cause thunder to happen, with a confidence 0.7. In this database, we have more raining days than not-raining days. It is impossible that the support of {thunder} is 0.6. {ram} {thunder} must also be an association rule in this database with support at least 0.45 and confidence at least 0.7.

Explanation / Answer

Answer :

we have a relation,where each record is an "itemset" and shows all the weather phenmena of a particular day.Suppose we discover an association rule {darkClouds,rain} {thunder} with support 0.45 and confidence 0.7.Which of the following conclusion is correct?

Answer :

D

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