Learn R Programming

preprocomb (version 0.3.0)

Tools for Preprocessing Combinations

Description

Preprocessing is often the most time-consuming phase in data analysis and preprocessing transformations interdependent in unexpected ways. This package helps to make preprocessing faster and more effective. It provides an S4 framework for creating and evaluating preprocessing combinations for classification, clustering and outlier detection. The framework supports adding of user-defined preprocessors and preprocessing phases. Default preprocessors can be used for low variance removal, missing value imputation, scaling, outlier removal, noise smoothing, feature selection and class imbalance correction.

Copy Link

Version

Install

install.packages('preprocomb')

Monthly Downloads

30

Version

0.3.0

License

GPL-2

Issues

Pull Requests

Stars

Forks

Maintainer

Markus Vattulainen

Last Published

June 26th, 2016

Functions in preprocomb (0.3.0)

preprocomb

the MAIN function of programmatic use.
PreprocessorClass-class

an abstract class from which concrete preprocessor (sub) classes are inhereted.
initializedataclassobject

constructor function for creating a DataClass object
exampleresult

preprocomb example
getpreprocessor

gets preprocessor definition
GridClass-class

container for preprocessor combinations and preprocessed data sets.
prepro

the MAIN function for interactive use.
getprogrammaticprediction

parallel computation of classification accuracy holdout rounds
PreProCombClass-class

container for combination evaluation
preprocessordefinitionstorage

environment for storing preprocessor definitions
setphase

constructor function for defining a preprocessing phase.
transformdata

transformdata
testpreprocessors

test preprocessing techniques against data
setpreprocessor

constructor function for adding a new preprocessing technique to the system
showrules

shows association rules for classification accuracy.
preprodefault

seven default phases with preprocessing techniques
setgrid

constructor function for creating the combinations