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ssym (version 1.5.7)

Fitting Semi-Parametric log-Symmetric Regression Models

Description

Set of tools to fit a semi-parametric regression model suitable for analysis of data sets in which the response variable is continuous, strictly positive, asymmetric and possibly, censored. Under this setup, both the median and the skewness of the response variable distribution are explicitly modeled by using semi-parametric functions, whose non-parametric components may be approximated by natural cubic splines or P-splines. Supported distributions for the model error include log-normal, log-Student-t, log-power-exponential, log-hyperbolic, log-contaminated-normal, log-slash, Birnbaum-Saunders and Birnbaum-Saunders-t distributions.

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Version

Install

install.packages('ssym')

Monthly Downloads

207

Version

1.5.7

License

GPL-2 | GPL-3

Maintainer

Luis Vanegas

Last Published

October 16th, 2016

Functions in ssym (1.5.7)

BIC.ssym

BIC.ssym
myeloma

Survival times for multiple myeloma patients
gdp

Gross Domestic Product (per capita)
np.graph

Tool to plot natural cubic splines or P-splines.
itpE3

itpE3
itpE

itpE
fitted.ssym

fitted.ssym
itpEC2

itpEC2
influence.ssym

Tool to perform sensitivity analysis on the fitted model using local influence measures.
itpE2

itpE2
logLik.ssym

logLik.ssym
Snacks

Textures of five different types of snacks
ssym-package

Fitting Semiparametric Log-symmetric Regression Models
Steel

Hardened Steel
plot.ssym

plot.ssym
vcov.ssym

vcov.ssym
Ovocytes

Fraction of cell volume
print.ssym

print.ssym
summary.ssym

summary.ssym
residuals.ssym

residuals.ssym
Baboons

What time do the baboons come down from the trees?
extra.parameter

Tool that supports the estimation of the extra parameter.
estfun.ssym

estfun.ssym
AIC.ssym

AIC.ssym
Biaxial

Brown and Miller's Biaxial Fatigue
envelope

Building of normal probability plots with simulated envelope of the deviance-type residuals.
Erabbits

Age and Eye Lens Weight of Rabbits in Australia
coef.ssym

coef.ssym
Claims

Personal Injure Insurance
psp

Tool to build the basis matrix and the penalty matrix of P-splines.
ssym.nl

Fitting Semi-parametric Log-symmetric Regression Models
rvgs

Random generation for some symmetric continuous distributions.
ncs

Tool to build the basis matrix and the penalty matrix of natural cubic splines.
ssym.l

Fitting Semi-parametric Log-symmetric Regression Models
ssym.l2

Fitting Censored Semi-parametric Log-symmetric Regression Models