ABSTRACT
This chapter presents the definition and mining of several types of generalized contrast patterns, including disjunctive emerging patterns, fuzzy emerging patterns, inequality contrasts, and contrast equations. The generalized contrast patterns use more expressive constructs, including disjunction (OR),
TABLE 8.1: A small example dataset for disjunctive emerging patterns
fuzzy concepts, equality and inequality involving arithmetic expressions over multiple attributes. In comparison, the standard contrast patterns are often limited to conjunctions (AND) of simple single-attribute conditions. The more powerful constructs give the generalized contrast patterns more modeling power. The generalized contrast patterns may also be more intuitive. The disjunctive emerging patterns are generalized contrast patterns defined for nominal features, whereas the other three are generalized contrast patterns defined for numerical features.
