Association Rules. Presented by: Anilkumar Panicker. What is Data Mining??. Search for valuable information in large volumes of data. A step in knowledge discovery in databases.
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Presented by: Anilkumar Panicker
The support (s) for an association rule
XY is the percentage of transactions in the database that contain X U Y.
E.g. If bread along with peanutbutter occurs in 60% of the total transactions, then the support for breadpeanutbutter is 60%
The confidence or strength (α) for an association rule XY is the ratio of the number of transactions that contain X U Y to the number of transactions that contain X.
Eg.if support for breadpeanutbutter is 60% and bread occurs in 80% of total transactions then confidence for breadpeanutbutter is 75%.
then the 31 possible itemsets are