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 ... [Read more...]

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 (... [Read more...]

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 (... [Read more...]

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... [Read more...]

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... [Read more...]

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... [Read more...]

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... [Read more...]

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... [Read more...]

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 ... [Read more...]

[This article is adapted and expanded from presentations at Nvidia's GTC conference in March, as well as UseR! in July, 2014.] 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 ... [Read more...]

Welcome to Mood Stochastic. This blog explores the development of performance-oriented software, as applied to the areas of statistics, predictive analytics and machine learning. [Read more...]