Blog Archives

Rborist 0-1.17 on CRAN

April 6, 2019
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Version 0-1.17 of the Rborist package is building successfully on CRAN. This is the last of the 0-1 series; future versions will instead employ a more conventional API numbering scheme. Two new command-line options have been introduced. Option nThread permits limiting the number of OpenMP threads employed in parallel regions of code. Option "oob" constrains prediction to out-of-bag samples, facilitating the computation of permutation-based variable...

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Rborist version 0-1.8 available from CRAN

August 3, 2017
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Version 0-1.8 of the Rborist implementation of the Random Forest (TM) algorithm is now available from CRAN. Although most changes involve refactoring to accommodate future updates, there are several bug fixes and enhancements worth mentioning. New option maxLeaf allows a limit to be set on the number of terminal nodes (i.e., leaves) in each trained tree. In order to not to introduce behavior dependent upon...

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Rborist version 0-1.8 available from CRAN

August 3, 2017
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Version 0-1.8 of the Rborist implementation of the Random Forest (TM) algorithm is now available from CRAN. Although most changes involve refactoring to accommodate future updates, there are several bug fixes and enhancements worth mentioning. New option maxLeaf allows a limit to be set on the number of terminal nodes (i.e., leaves) in each trained tree. In order to not to introduce behavior dependent upon...

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Rborist 0.1-6 now on CRAN

May 14, 2017
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Rborist 0.1-6 now on CRAN

The latest release of the Rborist package, which provides an accelerated implementation of the Random Forest (TM) algorithm, is available from CRAN. Version 0.1-6 offers several notable improvements: Sparse matrix representation Sparse numeric dcgM...

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Rborist 0.1-6 now on CRAN

May 14, 2017
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Rborist 0.1-6 now on CRAN

The latest release of the Rborist package, which provides an accelerated implementation of the Random Forest (TM) algorithm, is available from CRAN. Version 0.1-6 offers several notable improvements: Sparse matrix representation Sparse numeric dcgM...

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Rborist version 0.1-3 is now available from CRAN

August 23, 2016
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Version 0.1-3 of the Rborist Random Forest package can now be downloaded from CRAN. This version follows closely on the short-lived 0.1-2, which failed to install on Solaris. The new version features incremental performance improvements, as well as...

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Rborist version 0.1-3 is now available from CRAN

August 23, 2016
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Version 0.1-3 of the Rborist Random Forest package can now be downloaded from CRAN. This version follows closely on the short-lived 0.1-2, which failed to install on Solaris. The new version features incremental performance improvements, as well as...

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Rborist Package 0-1.0 Now Hosted on CRAN

February 18, 2015
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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. Particula...

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GPU programming in R: the gmatrix package provides a way forward

January 5, 2015
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R has featured packages to support GPU programming for over five years. Beginning with the Gputools package, developers continue to introduce new and more sophisticated tools to take advantage of these powerful coprocessors. The gmatrix package is a recent continuation of this trend which offers some significant new features. Background GPUs, or graphical processing units, are the numerical engines powering the visual display of modern computers....

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Accelerating the Random Forest Algorithm, I: the Algorithm

September 22, 2014
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The Random Forest algorithm is a well-known tool for data analysis. It yields robust predictive models for vastly different data sets, serving as a sort of Swiss Army Knife in the data scientist's toolkit. Given the need to accommodate ever-larger data sets, scalable...

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