A Projection Pursuit Forest Algorithm for Supervised Classification. Issue 4 (2nd October 2021)

• Record Type: Journal Article
• Authors: Silva, Natalia da; Cook, Dianne; Lee, Eun-Kyung
• Is Part Of: Journal of computational and graphical statistics. Volume 30:Issue 4(2021)
• Page Start: 1168
• Page End: 1180
• Publication Date: 2021-10-02
• Subjects: Data mining -- Ensemble model -- Exploratory data analysis -- High-dimensional data -- Statistical computing; Mathematical statistics -- Data processing -- Periodicals; Mathematical statistics -- Graphic methods -- Periodicals; 519.50285
• DOI: 10.1080/10618600.2020.1870480
• Languages: English
• ISSNs: 1061-8600

Abstract

Abstract: This article presents a new ensemble learning method for classification problems called projection pursuit random forest (PPF). PPF uses the PPtree algorithm where trees are constructed by splitting on linear combinations of randomly chosen variables. Projection pursuit is used to choose a projection of the variables that best separates the classes. Using linear combinations of variables to separate classes takes the correlation between variables into account which allows PPF to outperform a traditional random forest when separations between groups occurs in combinations of variables. The method presented here can be used in multi-class problems and is implemented into an R package, PPforest, which is available on CRAN. Supplementary files for this article are available online.