News for Package "recosystem"

Changes in recosystem version 0.5.1

• Fixed incorrect use of data_file() functions in the documentation, pointed out by Michael Lai.

Changes in recosystem version 0.5

• Added function data_matrix() to support data from a sparse matrix object in R, contributed by David Cortes (@david-cortes, #17).

• Fixed the different result on macOS.

Changes in recosystem version 0.4.5

• Fixed the dependence on rmarkdown, thanks to Kurt Hornik.

Changes in recosystem version 0.4.4

• Fixed the problem that recosystem gives different results on Windows compared with other OS, reported by Prof. Michael Trusov.

Changes in recosystem version 0.4.3

• Updated LIBMF to the newest version (403153c) in the upstream repository.

• Fixed a logical operation bug and a virtual destructor bug detected by CRAN.

Changes in recosystem version 0.4.2

• Added the missing "nbin" parameter in $train() and $tune(). (#6, reported by @Tutuchan).

• Added a progress bar for model tuning, controlled by the "progress" parameter in $tune(). (#5, suggested by @talegari).

Changes in recosystem version 0.4.1

• Fixed the misleading column name "rmse" in the return value of $tune().

• Also updated the documentation accordingly.

• Fixed the wrong parameter name in .Call(), thanks to Kurt Hornik.

• Now using the prettydoc package to format vignettes.

Changes in recosystem version 0.4

• Updated LIBMF to version 2.01.

• API change from LIBMF 2.01:

  • The cost option in $train() and $tune() has been expanded to and replaced by costp_l1, costp_l2, costq_l1, and costq_l2, to allow for more flexibility of the model.

  • A new loss parameter in $train() and $tune() to specify loss function.

• Other API change:

  • Data input and output are now managed in a unified way via functions data_file(), data_memory(), out_file(), out_memory(), and out_nothing(). See ?data_source and ?output_format for more information.

  • As a result, a number of arguments in functions $tune(), $train(), $output(), and $predict() now should be objects returned by these input/output functions.

Changes in recosystem version 0.3

• Updated LIBMF to version 1.2.

• Due to API change in LIBMF 1.2, $convert_train() and $convert_test() have been removed, and $train() and $predict() have changed API accordingly.

• New member function $tune() for tuning model parameters.

Changes in recosystem version 0.2.5

• New member function $output() to output factorization matrices.

Changes in recosystem version 0.2.4

• (Internal) Avoided using C RNG.

• Fixed UBSAN runtime errors, thanks to Prof. Brian Ripley.

Changes in recosystem version 0.2.3

• (Internal) Using pthreads on Windows to support multithreading.

Changes in recosystem version 0.2.2

• (Internal) Using portable code to allocate aligned memory.

Changes in recosystem version 0.2.1

• Rolled back to Rcpp due to a NOTE in R CMD check.

• Changed package name from Recosystem to recosystem.

• Now using R to generate random numbers in the algorithm, so the result is reproducible by setting seeds inside R.

Changes in recosystem version 0.2

• Now linking to Rcpp11.

• A new parameter verbose to control output information.

Changes in recosystem version 0.1

• Initial version.