Rborist Package 0-1.0 Now Hosted on CRAN

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Rborist, the R package version of the Arborist decision-tree utility, is now
available from CRAN. Version 0-1.0 is the initial release.

The Arborist implements the Random Forest algorithm with an emphasis on
performance and extensibility. Particular attention has been paid to the role
of data locality, for example, and key elements of the software are
parallelized for multicore hardware. Quantile regression is provided natively,
and additional internalized workflows are under development. Both numerical and
categorical data types are supported, with no preset limit on factor
cardinality.

The Arborist is currently an in-memory implementation, with out-of-memory
extensions envisioned in the medium term. More immediate plans for the software
include specialized GPU implementations, also currently under development.

The Rborist package interface is strongly influenced by the venerable
randomForest package. Options and results are similar, although not identical,
hopefully providing an accessible look-and-feel to randomForest users. As with
the randomForest package, prediction methods allow trained forests to be reused
on separately-provided data sets.

Please download the package and give it a try. Constructive criticism is
always appreciated.

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