Analyzing Exception Rules
Miguel Delgado, Maria Dolores Ruiz · 2008
Recent researches have pointed out that associations rules are insuffi-cient for representing the diverse kinds of knowledge collected in a database. Exception rules deal with a different type of knowledge some-times more useful than simple asso-ciations. Moreover exception rules (and other kinds of rules) provide a more comprehensive understand-ing of the information provided by a database. This work intends to go deeper in the logic model studied in [3]. In the model, association rules can be viewed as general relations between two or more attributes quantified by means of a convenient quanti-fier. Using this formulation we es-tablish the true semantics and the real formulation of exception rules. We also study the behavior of ex-ceptions when we deal with double rules.