Feature Selection via Discretization

| Discretization can turn numeric attributes into discrete ones. Feature selection can eliminate some irrelevant and/or redundant attributes. Chi2 is a simple and general algorithm that uses the 2 statistic to discretize numeric attributes repeatedly until some inconsistencies are found in the data. It achieves feature selection via dis-cretization. It can handle mixed attributes, work with multi-class data, and remove irrelevant and redundant attributes.