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expandFunctions  

Feature Matrix Builder
View on CRAN: Click here


Download and install expandFunctions package within the R console
Install from CRAN:
install.packages("expandFunctions")

Install from Github:
library("remotes")
install_github("cran/expandFunctions")

Install by package version:
library("remotes")
install_version("expandFunctions", "0.1.0")



Attach the package and use:
library("expandFunctions")
Maintained by
Scott Miller
[Scholar Profile | Author Map]
First Published: 2016-10-01
Latest Update: 2016-10-01
Description:
Generates feature matrix outputs from R object inputs using a variety of expansion functions. The generated feature matrices have applications as inputs for a variety of machine learning algorithms. The expansion functions are based on coercing the input to a matrix, treating the columns as features and converting individual columns or combinations into blocks of columns. Currently these include expansion of columns by efficient sparse embedding by vectors of lags, quadratic expansion into squares and unique products, powers by vectors of degree, vectors of orthogonal polynomials functions, and block random affine projection transformations (RAPTs). The transformations are magrittr- and cbind-friendly, and can be used in a building block fashion. For instance, taking the cos() of the output of the RAPT transformation generates a stationary kernel expansion via Bochner's theorem, and this expansion can then be cbind-ed with other features. Additionally, there are utilities for replacing features, removing rows with NAs, creating matrix samples of a given distribution, a simple wrapper for LASSO with CV, a Freeman-Tukey transform, generalizations of the outer function, matrix size-preserving discrete difference by row, plotting, etc.
How to cite:
Scott Miller (2016). expandFunctions: Feature Matrix Builder. R package version 0.1.0, https://cran.r-project.org/web/packages/expandFunctions. Accessed 29 Apr. 2025.
Previous versions and publish date:
No previous versions
Other packages that cited expandFunctions R package
View expandFunctions citation profile
Other R packages that expandFunctions depends, imports, suggests or enhances
Complete documentation for expandFunctions
Functions, R codes and Examples using the expandFunctions R package
Some associated functions: Ydiagnostics . coefPlot . distMat . eDiff . eLag . eMatrixOuter . eOuter . ePow . eQuad . eReplace . eTrim . easyLASSO . expandFunctions . freemanTukey . lagshift . polywrapper . rapt . raptMake . reset.warnings . yyHatPlot . 
Some associated R codes: expandFunctions-package.R . expandFunctions.R .  Full expandFunctions package functions and examples
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