Proceedings of 7th IEEE International Conference on Tools with Artificial Intelligence (1995)
Herndon, Virginia, USA
Nov. 5, 1995 to Nov. 8, 1995
Huan Liu , National University of Singapore
Rudy Setiono , National University of Singapore
Discretization can turn numeric attributes into discrete ones. Feature selection can eliminate some irrelevant attributes. This paper describes Chi2, a simple and general algorithm that uses the chi-square statistic to discretize numeric attributes repeatedly until some inconsistencies are found in the data, and achieves feature selection via discretization. The empirical results demonstrate that Chi2 is effective in feature selection and discretization of numeric and ordinal attributes.
Discretization, Feature Selection, chi-square Statistic
R. Setiono and H. Liu, "Chi2: Feature Selection and Discretization of Numeric Attributes," Proceedings of 7th IEEE International Conference on Tools with Artificial Intelligence(ICTAI), Herndon, Virginia, USA, 1995, pp. 388.