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gbm3: generalized boosted models ----0------------------------

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Originally written by Greg Ridgeway between 1999-2003, added to by various authors, extensively updated and polished by James Hickey in 2016, survival models greatly improved by Terry Therneau in 2016, and currently maintained by Greg Ridgeway. Development is discussed --- somewhat --- at https://groups.google.com/forum/#!forum/gbm-dev .

This is the shiny new gbm3 package that is not backwards compatible with R code calling the original gbm package, but is fast and parallel and developed.

Non-production releases (bug fixes, mostly) will be released via the GitHub release workflow. To install from GitHub, first install remotes from CRAN:

install.packages("remotes")

Then install gbm3 from GitHub:

remotes::install_github("gbm-developers/gbm3")

# or to ensure your got everything
remotes::install_github("gbm-developers/gbm3", build_vignettes = TRUE, force = TRUE)