NominalLogisticBiplot: Biplot representations of categorical data

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Analysis of a matrix of polytomous items using Nominal Logistic Biplots (NLB) according to Hernandez-Sanchez and Vicente-Villardon (2013). The NLB procedure extends the binary logistic biplot to nominal (polytomous) data. The individuals are represented as points on a plane and the variables are represented as convex prediction regions rather than vectors as in a classical or binary biplot. Using the methods from Computational Geometry, the set of prediction regions is converted to a set of points in such a way that the prediction for each individual is established by its closest "category point". Then interpretation is based on distances rather than on projections. In this package we implement the geometry of such a representation and construct computational algorithms for the estimation of parameters and the calculation of prediction regions.

Author
Julio Cesar Hernandez Sanchez, Jose Luis Vicente-Villardon
Date of publication
2014-05-02 07:13:20
Maintainer
Julio Cesar Hernandez Sanchez <juliocesar_avila@usal.es>
License
GPL (>= 2)
Version
0.2

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Man pages

afc
Simple Correspondence Analysis
Env
Ecological Factors in Farm Management.
Generators
Generators (points) of the tesselation generated by a nominal...
HairColor
Demographic Data
hermquad
Gauss-Hermite quadrature
multiquad
Multidimensional Gauss-Hermite quadrature
Nominal2Binary
Transformation of a nominal variable into a binary indicator...
NominalDistances
Distances between indidividuals calculated from nominal...
NominalLogBiplotEM
Alternated EM algorithm for Nominal Logistic Biplots
NominalLogisticBiplot
Nominal Logistic Biplot for polytomous data
NominalLogisticBiplot-package
Nominal Logistic Biplot representations for polytomous data
NominalMatrix2Binary
Indicator matrix of a set of nominal variables.
PCoA
Principal Coordinates Analysis
PhD_nomCyL
Data set from Survey on Human Resources in Science and...
plotNominalFittedVariable
Function for plotting in the reduced space an unordered and...
plot.nominal.logistic.biplot
Graphical representation of a Nominal Logistic Biplot.
plotNominalVariable
Function for plotting in the reduced space an unordered...
polylogist
Multinomial logistic regression with ridge penalization
RidgeMultinomialRegression
Ridge Multinomial Logistic Regression
summary.nominal.logistic.biplot
Summary Method Function for Objects of Class...

Files in this package

NominalLogisticBiplot
NominalLogisticBiplot/inst
NominalLogisticBiplot/inst/CITATION
NominalLogisticBiplot/NAMESPACE
NominalLogisticBiplot/data
NominalLogisticBiplot/data/HairColor.rda
NominalLogisticBiplot/data/PhD_nomCyL.rda
NominalLogisticBiplot/data/Env.rda
NominalLogisticBiplot/R
NominalLogisticBiplot/R/NominalDistances.R
NominalLogisticBiplot/R/plotNominalFittedVariable.r
NominalLogisticBiplot/R/RidgeMultinomialRegression.R
NominalLogisticBiplot/R/NominalMatrix2Binary.R
NominalLogisticBiplot/R/Generators.R
NominalLogisticBiplot/R/hermquad.R
NominalLogisticBiplot/R/NominalLogBiplotEM.R
NominalLogisticBiplot/R/plotNominalVariable.r
NominalLogisticBiplot/R/polylogist.R
NominalLogisticBiplot/R/PCoA.R
NominalLogisticBiplot/R/afc.R
NominalLogisticBiplot/R/auxLibrary.R
NominalLogisticBiplot/R/NominalLogisticBiplot.R
NominalLogisticBiplot/R/multiquad.R
NominalLogisticBiplot/R/Nominal2Binary.R
NominalLogisticBiplot/MD5
NominalLogisticBiplot/DESCRIPTION
NominalLogisticBiplot/man
NominalLogisticBiplot/man/PhD_nomCyL.Rd
NominalLogisticBiplot/man/plot.nominal.logistic.biplot.Rd
NominalLogisticBiplot/man/afc.Rd
NominalLogisticBiplot/man/NominalMatrix2Binary.Rd
NominalLogisticBiplot/man/plotNominalFittedVariable.Rd
NominalLogisticBiplot/man/HairColor.Rd
NominalLogisticBiplot/man/Nominal2Binary.Rd
NominalLogisticBiplot/man/hermquad.Rd
NominalLogisticBiplot/man/Generators.Rd
NominalLogisticBiplot/man/NominalLogisticBiplot.Rd
NominalLogisticBiplot/man/polylogist.Rd
NominalLogisticBiplot/man/NominalLogBiplotEM.Rd
NominalLogisticBiplot/man/summary.nominal.logistic.biplot.Rd
NominalLogisticBiplot/man/plotNominalVariable.Rd
NominalLogisticBiplot/man/NominalLogisticBiplot-package.Rd
NominalLogisticBiplot/man/NominalDistances.Rd
NominalLogisticBiplot/man/RidgeMultinomialRegression.Rd
NominalLogisticBiplot/man/Env.Rd
NominalLogisticBiplot/man/PCoA.Rd
NominalLogisticBiplot/man/multiquad.Rd