JSM 2005 Online Program

Abstract #303389

This is the preliminary program for the 2005 Joint Statistical Meetings in Minneapolis, Minnesota. Currently included in this program is the "technical" program, schedule of invited, topic contributed, regular contributed and poster sessions; Continuing Education courses (August 7-10, 2005); and Committee and Business Meetings. This on-line program will be updated frequently to reflect the most current revisions.

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Activity Number:	155
Type:	Luncheons
Date/Time:	Monday, August 8, 2005 : 12:30 PM to 1:50 PM
Sponsor:	Section on Statistical Graphics
Abstract - #303389
Title:	Statistical Visualization for Trees and Forests
Author(s):	Michael Minnotte*+
Companies:	Utah State University
Address:	Department of Math and Stat, Logan, UT, 84322-3900, United States
Keywords:	Graphics ; Visualization ; Trees ; Forests ; Modes ; Software
Abstract:	Classification and Regression Trees (CART) and their descendants have great ability to produce powerfully accurate predictions, often incorporating many variables, but the resulting models are frequently opaque and challenging to interpret. This is even more so for ensemble methods, often called "forests," incorporating dozens or hundreds of trees. Clever use of statistical graphics and visualization can reveal at least some of the structure of these models, aiding greatly in interpretability. We will discuss various approaches to visualizing these models and some of the software available. We also will discuss mode trees, mode forests, and related graphical methods for investigating features in nonparametric density estimates and regression curves. Participants are encouraged to bring additional applications and examples from their own experiences.

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