TITLE

Letter to the Editor: On the stability and ranking of predictors from random forest variable importance measures

AUTHOR(S)
Nicodemus, Kristin K.
PUB. DATE
July 2011
SOURCE
Briefings in Bioinformatics;Jul2011, Vol. 12 Issue 4, p369
SOURCE TYPE
Academic Journal
DOC. TYPE
Letter
ABSTRACT
A recent study examined the stability of rankings from random forests using two variable importance measures (mean decrease accuracy (MDA) and mean decrease Gini (MDG)) and concluded that rankings based on the MDG were more robust than MDA. However, studies examining data-specific characteristics on ranking stability have been few. Rankings based on the MDG measure showed sensitivity to within-predictor correlation and differences in category frequencies, even when the number of categories was held constant, and thus may produce spurious results. The MDA measure was robust to these data characteristics. Further, under strong within-predictor correlation, MDG rankings were less stable than those using MDA.
ACCESSION #
62989555

 

Related Articles

  • Letter to the editor. Nagaev, N. // Mathematical Notes;May/Jun2006, Vol. 79 Issue 5/6, p745 

    A letter to the editor is presented that makes a correction in the article "Division of Independent Variable and Transcendence" published in the volume 57, 1995 issue.

  • Constants in a differentiation process that become variables. Peterson, Haralds // Mathematical Scientist;Jun2009, Vol. 34 Issue 1, p57 

    A letter to the editor is presented which offers mathematical information on the variables of the differentiation process.

  • Letters to the Editor. Seiler, Karl // Operations Research;May/Jun66, Vol. 14 Issue 3, p528 

    The purpose of this paper is to develop an algorithm to examine the tradeoffs of performance versus cost versus time of obtainability. Consider three hypothetical aircraft with three obtainabilities: At (current), At+1 (one year later), and At+2 (two years later). Assume that an array of the...

  • COMMUNICATIONS TO THE EDITOR. Edie, Leslie C.; Macaol, Robert E.; Cushen, W. Edward; Rosenhead, Jonathan; Snyder, Ralph D.; Mole, Richard H.; Marshall, Jim; Lawler, Eugene L.; Zionts, Stanley; Rubin, David S. // Management Science;Mar73, Vol. 19 Issue 7, p830 

    The article presents several letters to the editor referencing various articles and topics discussed in previous issues of the journal "Management Science," including comments on Ralph D. Snyder's paper "A Note on the Location of Depots," comments on the storage reduction scheme proposed in an...

  • INTERNATIONAL PRICING DECISIONS: A DIAGNOSTIC APPROACH. Samli, A. Coskun; Jacobs, Laurence W. // Journal of Marketing Theory & Practice;Fall93-Winter94, Vol. 1 Issue 4, p29 

    Presents the theory for international pricing. Variables of the theories; Consideration on the internal influences of the theory; Framework for fixed or global prices.

  • EDITORIAL. Jones, Margaret // Mathematics Teaching;May2009, Issue 214, p2 

    The article discusses various reports published within the issue, including one by Barry Orr on GSP, one by Jonny Griffiths on starting points and one by the Two Old Men on mathematics.

  • MATH MYSTERY COMIX PRESENTS...FOWL FORMULAS!  // Scholastic Math;11/19/2001, Vol. 22 Issue 5, p14 

    Presents mathematical problems using formula in solving missing variables.

  • Wave front propagation and large deviations for diffusion –transmutation process. Freidlin, M. I.; Lee, T.-Y. // Probability Theory & Related Fields;1996, Vol. 106 Issue 1, p39 

    Summary. We study systems of reaction – diffusion equations of KPP-type with the coefficients and nonlinear terms slowly varying in the space variables. The long time behavior of the solution to such systems can be characterized by the motion of wave fronts. We describe the wave front...

  • An assertional criterion for atomicity. Hesselink, Wim H. // Acta Informatica;Mar2002, Vol. 38 Issue 5, p343 

    Presents a criterion for atomicity of read-write objects by means of ghost variables and invariants. Application of the criterion to Bloom's construction of a two-writer atomic register; Proofs of the invariants.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics