November 2018
Intermediate to advanced
300 pages
7h 42m
English
Content preview from Machine Learning in Java - Second Edition
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Confidence
The confidence of a rule indicates its accuracy. It is defined using the following formula:
For example, the {onions, burger} -> {beer} rule has the confidence 0.5/0.5 = 1.0 in the previous table, which means that 100% of the time when onions and burger are bought together, beer is bought as well.