Path: blob/main/devel/R-cran-gbm/pkg-descr
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Extensions to Freund and Schapire's AdaBoost algorithm and Friedman's gradient boosting machine. Includes regression methods for least squares, absolute loss, quantile regression, logistic, Poisson, Cox proportional hazards partial likelihood, and AdaBoost exponential loss. WWW: http://cran.r-project.org/web/packages/gbm/