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pinktoe: Semi-automatic Traversal of Trees

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  • Nason, Guy P.

Abstract

Tree based methods in S or R are extremely useful and popular. For simple trees and memorable variables it is easy to predict the outcome for a new case using only a standard decision tree diagram. However, for large trees or trees where the variable description is complex the decision tree diagram is often not enough. This article describes pinktoe: an R package containing two tools to assist with the semiautomatic traversal of trees. The PT tool creates a widget for each node to be visited in the tree that is needed to make a decision and permits the user to make decisions using radiobuttons. The pinktoe function generates a suite of HTML and Perl files that permit a CGI-enabled website to issue step-by-step questions to a user wishing to make a prediction using a tree.

Suggested Citation

  • Nason, Guy P., 2005. "pinktoe: Semi-automatic Traversal of Trees," Journal of Statistical Software, Foundation for Open Access Statistics, vol. 14(i01).
    • Handle: RePEc:jss:jstsof:v:014:i01
    DOI: http://hdl.handle.net/10.18637/jss.v014.i01
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    References listed on IDEAS

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    1. Franklin, Mark N. & Tappin, Michael, 1977. "Early Day Motions as Unobtrusive Measures of Backbench Opinion in Britain," British Journal of Political Science, Cambridge University Press, vol. 7(1), pages 49-69, January.
    2. Leece, John & Berrington, Hugh, 1977. "Measurements of Backbench Attitudes by Guttman Scaling of Early Day Motions: A Pilot Study, Labour, 1968–69," British Journal of Political Science, Cambridge University Press, vol. 7(4), pages 529-541, October.
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    1. repec:jss:jstsof:22:i05 is not listed on IDEAS
    2. Thioulouse, Jean & Dray, Stéphane, 2007. "Interactive Multivariate Data Analysis in R with the ade4 and ade4TkGUI Packages," Journal of Statistical Software, Foundation for Open Access Statistics, vol. 22(i05).

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