Random survival forests
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Open Access
- 1 September 2008
- journal article
- research article
- Published by Institute of Mathematical Statistics in The Annals of Applied Statistics
- Vol. 2 (3) , 841-860
- https://doi.org/10.1214/08-aoas169
Abstract
We introduce random survival forests, a random forests method for the analysis of right-censored survival data. New survival splitting rules for growing survival trees are introduced, as is a new missing data algorithm for imputing missing data. A conservation-of-events principle for survival forests is introduced and used to define ensemble mortality, a simple interpretable measure of mortality that can be used as a predicted outcome. Several illustrative examples are given, including a case study of the prognostic implications of body mass for individuals with coronary artery disease. Computations for all examples were implemented using the freely available R-software package, randomSurvivalForest.Keywords
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