## FSelectorRcpp 0.3.0

The purpose of this release is to make more compatible with FSelector package. We changed some of the default behaviors, so the results might be different between version 2.* and 3.0.

• information_gain and discretize get new parameter discIntegers to control if integer columns should be discretized. Default value is TRUE, so it means that they’re treated like numerics. For more information please refer to vignette("integer-variables", package = "FSelectorRcpp").
• FSelectorRcpp tries to mimic the behavior of the FSelector when there are NAs in the dependent variable passed to information_gain (remove only those rows which contain NAs dependent variable, NAs in independents variables are removed column-wise).

## FSelectorRcpp 0.2.0

• Changed discretize argument all to TRUE.
• Added customBreaksControl for creating custom breaks in discretize function.
• discretize can be now evaluated with data as a first argument in the formula interface
• You can now use discretize(iris, Species ~ .) or discretize(Species ~ ., iris).
• discretize(iris, Species ~ .) seems to be more pipe friendly.
• discretize_transform allows applying the discretization cut points to the new data set.
• extract_discretize_transformer produces small object containing all cutpoints. It can be also used to transform the new data set.
• extract_discretize_transformer can be useful in ML pipelines where the training data needs to be discarded to save memory.

## FSelectorRcpp 0.1.8

• Removed support for the doSnow progress bar. We now use doParallel in our examples, which is more recommended than doSnow.

Bug fixes:

• Fixed build using Rcpp 0.12.12
• feature_search now returns proper structure.

## FSelectorRcpp 0.1.3

Bug fixes:

• Export C++ routine for tests.
• Use dontrun to hide problematic example (for CRAN).

## FSelectorRcpp 0.1.2

Bug fixes:

• Removed problematic links in vignettes.

## FSelectorRcpp 0.1.1

Bug fixes:

• Skip benchmark if the RTCGA.rnaseq package is not available.
• Minor fixes in vignettes.

## FSelectorRcpp 0.1.0

Rcpp (free of Java/Weka) implementation of FSelector entropy-based feature selection algorithms with sparse matrix support.

Provided functions

• discretize() with additional equalsizeControl() and mdlControl - discretize a range of numeric attributes in the dataset into nominal attributes. Minimum Description Length (MDL) method is set as the default control. There is also available equalsizeControl() method.
• information_gain() - algorithms that find ranks of importance of discrete attributes, basing on their entropy with a continous class attribute,
• feature_search() - a convenience wrapper for \code{greedy} and \code{exhaustive} feature selection algorithms that extract valuable attributes depending on the evaluation method (called evaluator),
• cut_attrs() - select attributes by their score/rank/weights, depending on the cutoff that may be specified by the percentage of the highest ranked attributes or by the number of the highest ranked attributes,
• to_formula() (misc) - create a formula object from a vector.