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VGAM (version 1.1-4)

Vector Generalized Linear and Additive Models

Description

An implementation of about 6 major classes of statistical regression models. The central algorithm is Fisher scoring and iterative reweighted least squares. At the heart of this package are the vector generalized linear and additive model (VGLM/VGAM) classes. VGLMs can be loosely thought of as multivariate GLMs. VGAMs are data-driven VGLMs that use smoothing. The book "Vector Generalized Linear and Additive Models: With an Implementation in R" (Yee, 2015) gives details of the statistical framework and the package. Currently only fixed-effects models are implemented. Many (150+) models and distributions are estimated by maximum likelihood estimation (MLE) or penalized MLE. The other classes are RR-VGLMs (reduced-rank VGLMs), quadratic RR-VGLMs, reduced-rank VGAMs, RCIMs (row-column interaction models)---these classes perform constrained and unconstrained quadratic ordination (CQO/UQO) models in ecology, as well as constrained additive ordination (CAO). Hauck-Donner effect detection is implemented. Note that these functions are subject to change; see the NEWS and ChangeLog files for latest changes.

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Version

Install

install.packages('VGAM')

Monthly Downloads

42,087

Version

1.1-4

License

GPL-3

Maintainer

Last Published

October 23rd, 2020

Functions in VGAM (1.1-4)

AICvlm

Akaike's Information Criterion
AR1EIM

Computation of the Exact EIM of an Order-1 Autoregressive Process
dAR1

The AR-1 Autoregressive Process
BICvlm

Bayesian Information Criterion
AR1

Autoregressive Process with Order-1 Family Function
ABO

The ABO Blood Group System
AB.Ab.aB.ab

The AB-Ab-aB-ab Blood Group System
A1A2A3

The A1A2A3 Blood Group System
Coef

Computes Model Coefficients and Quantities
AA.Aa.aa

The AA-Aa-aa Blood Group System
Inv.gaussian

The Inverse Gaussian Distribution
Coef.vlm

Extract Model Coefficients for VLM Objects
Influence

Influence Function (S4 generic) of a Fitted Model
CommonVGAMffArguments

Common VGAM Family Function Arguments
Huggins89.t1

Table 1 of Huggins (1989)
Opt

Optimums
Pareto

The Pareto Distribution
aux.posbernoulli.t

Auxiliary Function for the Positive Bernoulli Family Function with Time Effects
auuc

Auckland University Undergraduate Counts Data
Coef.rrvglm-class

Class ``Coef.rrvglm''
Coef.qrrvglm-class

Class ``Coef.qrrvglm''
Qvar

Quasi-variances Preprocessing Function
bell

The Bell Series of Integers
Betageom

The Beta-Geometric Distribution
R2latvar

R-squared for Latent Variable Models
Links

Link functions for VGLM/VGAM/etc. families
Rank

Rank
SurvS4-class

Class "SurvS4"
Frank

Frank's Bivariate Distribution
Bell

The Bell Distribution
betageometric

Beta-geometric Distribution Family Function
SurvS4

Create a Survival Object
Benford

Benford's Distribution
V1

V1 Flying-Bombs Hits in London
Coef.rrvglm

Returns Important Matrices etc. of a RR-VGLM Object
bellff

Bell Distribution Family Function
Betanorm

The Beta-Normal Distribution
Max

Maximums
MNSs

The MNSs Blood Group System
bigamma.mckay

Bivariate Gamma: McKay's Distribution
V2

V2 Missile Hits in London
acat

Ordinal Regression with Adjacent Categories Probabilities
VGAM-package

Vector Generalized Linear and Additive Models and Associated Models
beggs

Bacon and Eggs Data
amlnormal

Asymmetric Least Squares Quantile Regression
backPain

Data on Back Pain Prognosis, from Anderson (1984)
biclaytoncop

Clayton Copula (Bivariate) Family Function
amlexponential

Exponential Regression by Asymmetric Maximum Likelihood Estimation
Biclaytoncop

Clayton Copula (Bivariate) Distribution
Binom2.or

Bivariate Binary Regression with an Odds Ratio
altered

Altered, Inflated and Truncated Values in GAIT Regression
brat

Bradley Terry Model
binom2.rho

Bivariate Probit Model (Family Function)
Card

Cardioid Distribution
Brat

Inputting Data to fit a Bradley Terry Model
amlbinomial

Binomial Logistic Regression by Asymmetric Maximum Likelihood Estimation
cao.control

Control Function for RR-VGAMs (CAO)
betaprime

The Beta-Prime Distribution
Dagum

The Dagum Distribution
Coef.qrrvglm

Returns Important Matrices etc. of a QO Object
dagum

Dagum Distribution Family Function
double.cens.normal

Univariate Normal Distribution with Double Censoring
bilogistic

Bivariate Logistic Distribution Family Function
bigumbelIexp

Gumbel's Type I Bivariate Distribution Family Function
Rcim

Mark the Baseline of Row and Column on a Matrix data
bilogis

Bivariate Logistic Distribution
binormalcop

Gaussian Copula (Bivariate) Family Function
biamhcop

Ali-Mikhail-Haq Distribution Family Function
Trunc

Truncated Values for the GT-Expansion Method
alaplace

Asymmetric Laplace Distribution Family Functions
alaplaceUC

The Laplace Distribution
Binom2.rho

Bivariate Probit Model
betabinomialff

Beta-binomial Distribution Family Function
betaR

The Two-parameter Beta Distribution Family Function
betaII

Beta Distribution of the Second Kind
Bisa

The Birnbaum-Saunders Distribution
SURff

Seemingly Unrelated Regressions Family Function
binomialff

Binomial Family Function
UtilitiesVGAM

Utility Functions for the VGAM Package
Binormcop

Gaussian Copula (Bivariate) Distribution
betaff

The Two-parameter Beta Distribution Family Function
binom2.or

Bivariate Binary Regression with an Odds Ratio (Family Function)
anova.vglm

Analysis of Deviance for Vector Generalized Linear Model Fits
Select

Select Variables for a Formula Response or the RHS of a Formula
Tol

Tolerances
amlpoisson

Poisson Regression by Asymmetric Maximum Likelihood Estimation
TIC

Takeuchi's Information Criterion
Bistudentt

Bivariate Student-t Distribution Cumulative Distribution Function
Biamhcop

Ali-Mikhail-Haq Bivariate Distribution
bmi.nz

Body Mass Index of New Zealand Adults Data
double.expbinomial

Double Exponential Binomial Distribution Family Function
Expectiles-Uniform

Expectiles of the Uniform Distribution
expexpff

Exponentiated Exponential Distribution
calibrate

Model Calibrations
familyname

Family Function Name
borel.tanner

Borel-Tanner Distribution Family Function
Bifgmcop

Farlie-Gumbel-Morgenstern's Bivariate Distribution
bistudentt

Bivariate Student-t Family Function
felix

Felix Distribution Family Function
bifgmcop

Farlie-Gumbel-Morgenstern's Bivariate Distribution Family Function
bratt

Bradley Terry Model With Ties
calibrate.qrrvglm

Calibration for CQO and CAO models
binormal

Bivariate Normal Distribution Family Function
frechet

Frechet Distribution Family Function
benini1

Benini Distribution Family Function
Genpois0

Generalized Poisson Distribution (Original Parameterization)
Frechet

The Frechet Distribution
gammahyperbola

Gamma Hyperbola Bivariate Distribution
garma

GARMA (Generalized Autoregressive Moving-Average) Models
Genpois1

Generalized Poisson Distribution (GP-1 and GP-2 Parameterizations of the Mean)
Binorm

Bivariate Normal Distribution Cumulative Distribution Function
grain.us

Grain Prices Data in USA
Bort

The Borel-Tanner Distribution
grc

Row-Column Interaction Models including Goodman's RC Association Model and Unconstrained Quadratic Ordination
biplot-methods

Biplot of Constrained Regression Models
calibrate.rrvglm.control

Control Function for CLO (RR-VGLM) Calibration
cens.poisson

Censored Poisson Family Function
cao

Fitting Constrained Additive Ordination (CAO)
Benini

The Benini Distribution
guplot

Gumbel Plot
coalminers

Breathlessness and Wheeze Amongst Coalminers Data
bisa

Birnbaum-Saunders Distribution Family Function
cratio

Ordinal Regression with Continuation Ratios
Betabinom

The Beta-Binomial Distribution
bifgmexp

Bivariate Farlie-Gumbel-Morgenstern Exponential Distribution Family Function
calibrate-methods

Calibration for Constrained Regression Models
cardioid

Cardioid Distribution Family Function
betabinomial

Beta-binomial Distribution Family Function
coefvgam

Extract Model Coefficients of a vgam() Object
cumulative

Ordinal Regression with Cumulative Probabilities
cauchy

Cauchy Distribution Family Function
has.interceptvlm

Has a Fitted VGLM Got an Intercept Term?
cdf.lmscreg

Cumulative Distribution Function for LMS Quantile Regression
kendall.tau

Kendall's Tau Statistic
Hzeta

Haight's Zeta Distribution
is.zero

Zero Constraint Matrices
hzeta

Haight's Zeta Family Function
logLik.vlm

Extract Log-likelihood for VGLMs/VGAMs/etc.
cgo

Redirects the user to cqo
cauchitlink

Cauchit Link Function
Log

Logarithmic Distribution
cfibrosis

Cystic Fibrosis Data
deermice

Captures of Peromyscus maniculatus (Also Known as Deer Mice).
logff

Logarithmic Distribution
lvplot

Latent Variable Plot
logclink

Complementary-log Link Function
lvplot.qrrvglm

Latent Variable Plot for QO models
chest.nz

Chest Pain in NZ Adults Data
crashes

Crashes on New Zealand Roads in 2009
cqo

Fitting Constrained Quadratic Ordination (CQO)
mccullagh89

McCullagh (1989) Distribution Family Function
coefvlm

Extract Model Coefficients
melbmaxtemp

Melbourne Daily Maximum Temperatures
concoef-methods

Constrained (Canonical) Coefficients
bifrankcop

Frank's Bivariate Distribution Family Function
dirmultinomial

Fitting a Dirichlet-Multinomial Distribution
mix2normal

Mixture of Two Univariate Normal Distributions
mix2poisson

Mixture of Two Poisson Distributions
Diffzeta

Differenced Zeta Distribution
Expectiles-Normal

Expectiles of the Normal Distribution
enzyme

Enzyme Data
dirmul.old

Fitting a Dirichlet-Multinomial Distribution
Biplackett

Plackett's Bivariate Copula
calibrate.qrrvglm.control

Control Function for CQO/CAO Calibration
biplackettcop

Plackett's Bivariate Copula Family Function
explogff

Exponential Logarithmic Distribution Family Function
calibrate.rrvglm

Calibration for CLO models (RR-VGLMs)
ducklings

Relative Frequencies of Serum Proteins in White Pekin Ducklings
add1.vglm

Add or Drop All Possible Single Terms to/from a Model
exponential

Exponential Distribution
expint

The Exponential Integral and Variants
clo

Redirects the User to rrvglm()
deplot.lmscreg

Density Plot for LMS Quantile Regression
dextlogF

Extended log-F Distribution
Felix

The Felix Distribution
expgeom

The Exponential Geometric Distribution
clogloglink

Complementary Log-log Link Function
corbet

Corbet's Butterfly Data
df.residual

Residual Degrees-of-Freedom
depvar

Response Variable Extracted
constraints

Constraint Matrices
dirichlet

Fitting a Dirichlet Distribution
fill

Creates a Matrix of Appropriate Dimension
finney44

Toxicity trial for insects
Fisk

The Fisk Distribution
gamma2

2-parameter Gamma Regression Family Function
gaitzeta

Generally--Altered, --Inflated and --Truncated Zeta Regression
fittedvlm

Fitted Values of a VLM object
gaitpoisson

Generally--Altered, --Inflated and --Truncated Poisson Regression
gammaR

2-parameter Gamma Regression Family Function
genrayleigh

Generalized Rayleigh Distribution Family Function
cens.gumbel

Censored Gumbel Distribution
genpoisson2

Generalized Poisson Regression (GP-2 Parameterization)
Nakagami

Nakagami Distribution
erf

Error Function, and variants
extlogF1

Extended log-F Distribution Family Function
erlang

Erlang Distribution
nakagami

Nakagami Regression Family Function
fff

F Distribution Family Function
explog

The Exponential Logarithmic Distribution
fisherzlink

Fisher's Z Link Function
explink

Exponential Link Function
fix.crossing

Fixing a Quantile Regression having Crossing
Gaitpois

Generally--Altered, --Inflated and --Truncated Poisson Distribution
Foldnorm

The Folded-Normal Distribution
foldnormal

Folded Normal Distribution Family Function
gaitlog

Generally--Altered, --Inflated and --Truncated Logarithmic Regression
flourbeetle

Mortality of Flour Beetles from Carbon Disulphide
cens.normal

Censored Normal Distribution
Gaitnbinom

Generally--Altered, --Inflated and --Truncated Negative Binomial Distribution
fisk

Fisk Distribution family function
gpd

Generalized Pareto Distribution Regression Family Function
gevUC

The Generalized Extreme Value Distribution
gpdUC

The Generalized Pareto Distribution
inv.gaussianff

Inverse Gaussian Distribution Family Function
gev

Generalized Extreme Value Regression Family Function
inv.binomial

Inverse Binomial Distribution Family Function
Gaitlog

Generally--Altered, --Inflated and --Truncated Logarithmic Distribution
hatvalues

Hat Values and Regression Deletion Diagnostics
lindley

1-parameter Gamma Distribution
latvar

Latent Variables
Gaitbinom

Generally--Altered, --Inflated and --Truncated Binomial Distribution
freund61

Freund's (1961) Bivariate Extension of the Exponential Distribution
hdeff

Hauck-Donner Effects: A Detection Test for Wald Tests
leipnik

Leipnik Regression Family Function
oxtemp

Oxford Temperature Data
linkfun

Link Functions
logF

Natural Exponential Family Generalized Hyperbolic Secant Distribution Family Function
gengammaUC

Generalized Gamma Distribution
Gaitzeta

Generally--Altered, --Inflated and --Truncated Zeta Distribution
genray

The Generalized Rayleigh Distribution
gamma1

1-parameter Gamma Regression Family Function
chinese.nz

Chinese Population in New Zealand 1867--2001 Data
perks

Perks Distribution Family Function
paralogistic

Paralogistic Distribution Family Function
gengamma.stacy

Generalized Gamma distribution family function
geometric

Geometric (Truncated and Untruncated) Distributions
hyperg

Hypergeometric Family Function
genpoisson0

Generalized Poisson Regression (Original Parameterization)
Gompertz

Gompertz Distribution
hypersecant

Hyperbolic Secant Regression Family Function
genpoisson1

Generalized Poisson Regression (GP-1 Parameterization)
makeham

Makeham Regression Family Function
dlogF

log F Distribution
gumbel

Gumbel Regression Family Function
Makeham

The Makeham Distribution
gordlink

Gamma-Ordinal Link Function
Perks

The Perks Distribution
dhuber

Huber's Least Favourable Distribution
gumbelII

Gumbel-II Regression Family Function
posbernoulli.tb

Positive Bernoulli Family Function with Time and Behavioural Effects
chisq

Chi-squared Distribution
hdeffsev

Hauck-Donner Effects: Severity Measures
Inv.lomax

The Inverse Lomax Distribution
hormone

Hormone Assay Data
propodds

Proportional Odds Model for Ordinal Regression
profilevglm

Method for Profiling vglm Objects
inv.lomax

Inverse Lomax Distribution Family Function
posbinomial

Positive Binomial Distribution Family Function
hunua

Hunua Ranges Data
lerch

Lerch Phi Function
micmen

Michaelis-Menten Model
concoef

Extract Model Constrained/Canonical Coefficients
meplot

Mean Excess Plot
riceff

Rice Distribution Family Function
multilogitlink

Multi-logit Link Function
confintvglm

Confidence Intervals for Parameters of VGLMs
inv.paralogistic

Inverse Paralogistic Distribution Family Function
multinomial

Multinomial Logit Model
hspider

Hunting Spider Data
leukemia

Acute Myelogenous Leukemia Survival Data
lms.yjn

LMS Quantile Regression with a Yeo-Johnson Transformation to Normality
laplaceUC

The Laplace Distribution
laplace

Laplace Regression Family Function
is.parallel

Parallelism Constraint Matrices
huber2

Huber's Least Favourable Distribution Family Function
Sinmad

The Singh-Maddala Distribution
Expectiles-sc.t2

Expectiles/Quantiles of the Scaled Student t Distribution with 2 Df
sc.studentt2

Scaled Student t Distribution with 2 df Family Function
is.smart

Test For a Smart Object
rigff

Reciprocal Inverse Gaussian distribution
Inv.paralogistic

The Inverse Paralogistic Distribution
dgaitplot

Plotting the GAIT Combo Density
skellam

Skellam Distribution Family Function
linkfun.vglm

Link Functions for VGLMs
diffzeta

Differenced Zeta Distribution Family Function
lino

Generalized Beta Distribution Family Function
log1mexp

Logarithms with an Unit Offset and Exponential Term
Kumar

The Kumaraswamy Distribution
loglapUC

The Log-Laplace Distribution
kumar

Kumaraswamy Regression Family Function
lognormal

Lognormal Distribution
logitoffsetlink

Logit-with-an-Offset Link Function
logloglink

Log-log and Log-log-log Link Functions
Expectiles-Exponential

Expectiles of the Exponential Distribution
marital.nz

New Zealand Marital Data
margeff

Marginal Effects for Several Categorical Response Models
plotdgait.vglm

Plotting the GAIT Combo Density from a GAIT Regression Object
skewnormal

Univariate Skew-Normal Distribution Family Function
eCDF

Empirical Cumulative Distribution Function
moffset

Matrix Offset
model.matrixvlm

Construct the Design Matrix of a VLM Object
lms.bcg

LMS Quantile Regression with a Box-Cox transformation to a Gamma Distribution
expgeometric

Exponential Geometric Distribution Family Function
expexpff1

Exponentiated Exponential Distribution
slash

Slash Distribution Family Function
toxop

Toxoplasmosis Data
Topple

The Topp-Leone Distribution
venice

Venice Maximum Sea Levels Data
vplot.profile

Plotting Functions for 'profile' Objects
vgam-class

Class ``vgam''
tobit

Tobit Regression
Tikuv

A Short-tailed Symmetric Distribution
plotqrrvglm

Model Diagnostic Plots for QRR-VGLMs
zabinomial

Zero-Altered Binomial Distribution
vonmises

von Mises Distribution Family Function
plotvgam

Default VGAM Plotting
Lindley

The Lindley Distribution
Lino

The Generalized Beta Distribution (Libby and Novick, 1982)
Zageom

Zero-Altered Geometric Distribution
lgamma1

Log-gamma Distribution Family Function
lirat

Low-iron Rat Teratology Data
zapoisson

Zero-Altered Poisson Distribution
zero

The zero Argument in VGAM Family Functions
loglinb3

Loglinear Model for Three Binary Responses
exppoisson

Exponential Poisson Distribution Family Function
lms.bcn

LMS Quantile Regression with a Box-Cox Transformation to Normality
exppois

The Exponential Poisson Distribution
lrt.stat

Likelihood Ratio Test Statistics Evaluated at the Null Values
zinegbinomial

Zero-Inflated Negative Binomial Distribution Family Function
loglinb2

Loglinear Model for Two Binary Responses
lrtest

Likelihood Ratio Test of Nested Models
maxwell

Maxwell Regression Family Function
loglink

Log Link Function, and Variants
zipebcom

Exchangeable Bivariate cloglog Odds-ratio Model From a Zero-inflated Poisson Distribution
loglaplace

Log-Laplace and Logit-Laplace Distribution Family Functions
Lomax

The Lomax Distribution
negbinomial

Negative Binomial Distribution Family Function
foldsqrtlink

Folded Square Root Link Function
negbinomial.size

Negative Binomial Distribution Family Function With Known Size
Posgeom

Positive-Geometric Distribution
Paralogistic

The Paralogistic Distribution
predictvglm

Predict Method for a VGLM fit
posnegbinomial

Positive Negative Binomial Distribution Family Function
plotvgam.control

Control Function for plotvgam()
Zoabeta

The Zero/One-Inflated Beta Distribution
ordsup

Ordinal Superiority Measures
ordpoisson

Ordinal Poisson Family Function
Maxwell

The Maxwell Distribution
lqnorm

Minimizing the L-q norm Family Function
rrvglm.control

Control Function for rrvglm()
prentice74

Prentice (1974) Log-gamma Distribution
rec.normal

Upper Record Values from a Univariate Normal Distribution
rec.exp1

Upper Record Values from a 1-parameter Exponential Distribution
PoissonPoints

Poisson Points Distribution
Rice

The Rice Distribution
poisson.points

Poisson-points-on-a-plane/volume Distances Distribution
rhobitlink

Rhobit Link Function
machinists

Machinists Accidents
formulavlm

Model Formulae and Term Names for VGLMs
lvplot.rrvglm

Latent Variable Plot for RR-VGLMs
mills.ratio

Mills Ratio
mix2exp

Mixture of Two Exponential Distributions
specials

Special Values or Quantities in a Fitted Object
paretoIV

Pareto(IV/III/II) Distribution Family Functions
Skellam

The Skellam Distribution
predictqrrvglm

Predict Method for a CQO fit
rrvglm.optim.control

Control Function for rrvglm() Calling optim()
prats

Pregnant Rats Toxological Experiment Data
skewnorm

Skew-Normal Distribution
GenbetaII

The Generalized Beta II Distribution
normal.vcm

Univariate Normal Distribution as a Varying-Coefficient Model
genbetaII

Generalized Beta Distribution of the Second Kind
plotrcim0

Main Effects Plot for a Row-Column Interaction Model (RCIM)
sratio

Ordinal Regression with Stopping Ratios
plotqtplot.lmscreg

Quantile Plot for LMS Quantile Regression
olympics

2008 and 2012 Summer Olympic Final Medal Count Data
trinormal

Trivariate Normal Distribution Family Function
notdocumentedyet

Undocumented and Internally Used Functions and Classes
nparam.vlm

Number of Parameters
Trinorm

Trivariate Normal Distribution Density and Random Variates
get.smart

Retrieve One Component of ``.smart.prediction''
undocumented-methods

Undocumented Methods Functions
ucberk

University California Berkeley Graduate Admissions
rayleigh

Rayleigh Regression Family Function
pgamma.deriv

Derivatives of the Incomplete Gamma Integral
poissonff

Poisson Regression
vsmooth.spline

Vector Cubic Smoothing Spline
perspqrrvglm

Perspective plot for QRR-VGLMs
Polono

The Poisson Lognormal Distribution
Rayleigh

Rayleigh Distribution
get.smart.prediction

Retrieves ``.smart.prediction''
gew

General Electric and Westinghouse Data
reciprocallink

Reciprocal Link Function
Posnorm

The Positive-Normal Distribution
gompertz

Gompertz Regression Family Function
Gumbel-II

The Gumbel-II Distribution
waitakere

Waitakere Ranges Data
Yules

Yule-Simon Distribution
residualsvglm

Residuals for a VGLM fit
gumbelUC

The Gumbel Distribution
identitylink

Identity Link Function
iam

Index from Array to Matrix
is.crossing

Quantile Crossing Detection
is.buggy

Does the Fitted Object Suffer from a Known Bug?
pneumo

Pneumoconiosis in Coalminers Data
plotvglm

Plots for VGLMs
Zabinom

Zero-Altered Binomial Distribution
posnormal

Positive Normal Distribution Family Function
zanegbinomial

Zero-Altered Negative Binomial Distribution
Zapois

Zero-Altered Poisson Distribution
Zinegbin

Zero-Inflated Negative Binomial Distribution
qrrvglm.control

Control Function for QRR-VGLMs (CQO)
lambertW

The Lambert W Function
zigeometric

Zero-Inflated Geometric Distribution Family Function
lakeO

Annual catches on Lake Otamangakau from October 1974 to October 1989
levy

Levy Distribution Family Function
qtplot.gumbel

Quantile Plot for Gumbel Regression
lgammaUC

The Log-Gamma Distribution
Tobit

The Tobit Distribution
round2

Rounding of Numbers to Base 2
pospoisson

Positive Poisson Distribution Family Function
Truncpareto

The Truncated Pareto Distribution
rrar

Nested Reduced-rank Autoregressive Models for Multiple Time Series
truncweibull

Truncated Weibull Distribution Family Function
topple

Topp-Leone Distribution Family Function
vgam.control

Control Function for vgam()
prplot

Probability Plots for Categorical Data Analysis
powerlink

Power Link Function
score.stat

Rao's Score Test Statistics Evaluated at the Null Values
vgam

Fitting Vector Generalized Additive Models
put.smart

Adds a List to the End of the List ``.smart.prediction''
seglines

Hauck-Donner Effects: Segmented Lines Plot
weibull.mean

Weibull Distribution Family Function, Parameterized by the Mean
logitlink

Logit Link Function
logistic

Logistic Distribution Family Function
seq2binomial

The Two-stage Sequential Binomial Distribution Family Function
qtplot.lmscreg

Quantile Plot for LMS Quantile Regression
step4

Choose a model by AIC in a Stepwise Algorithm
weibullR

Weibull Distribution Family Function
setup.smart

Smart Prediction Setup
sm.ps

Defining Penalized Spline Smooths in VGAM Formulas
smart.expression

S Expression for Smart Functions
yip88

Zero-Inflated Poisson Distribution (Yip (1988) algorithm)
studentt

Student t Distribution
yulesimon

Yule-Simon Family Function
logofflink

Log Link Function with an Offset
model.framevlm

Construct the Model Frame of a VLM Object
lomax

Lomax Distribution Family Function
qvar

Quasi-variances Extraction Function
Triangle

The Triangle Distribution
model.matrixqrrvglm

Construct the Model Matrix of a QRR-VGLM Object
ruge

Rutherford-Geiger Polonium Data
triangle

Triangle Distribution Family Function
sinmad

Singh-Maddala Distribution Family Function
s

Defining Smooths in VGAM Formulas
Slash

Slash Distribution
zageometric

Zero-Altered Geometric Distribution
Zanegbin

Zero-Altered Negative Binomial Distribution
simulate.vlm

Simulate Responses for VGLMs and VGAMs
zipoisson

Zero-Inflated Poisson Distribution Family Function
zoabetaR

Zero- and One-Inflated Beta Distribution Family Function
wrapup.smart

Cleans Up After Smart Prediction
sm.os

Defining O'Sullivan Spline Smooths in VGAM Formulas
summarypvgam

Summarizing Penalized Vector Generalized Additive Model Fits
Zibinom

Zero-Inflated Binomial Distribution
trplot

Trajectory Plot
summaryvgam

Summarizing Vector Generalized Additive Model Fits
yeo.johnson

Yeo-Johnson Transformation
zetaff

Zeta Distribution Family Function
zibinomial

Zero-Inflated Binomial Distribution Family Function
nbordlink

Negative Binomial-Ordinal Link Function
nbcanlink

Negative Binomial Canonical Link Function
Zigeom

Zero-Inflated Geometric Distribution
ParetoIV

The Pareto(IV/III/II) Distributions
paretoff

Pareto and Truncated Pareto Distribution Family Functions
trplot.qrrvglm

Trajectory plot for QRR-VGLMs
vglm-class

Class ``vglm''
pgamma.deriv.unscaled

Derivatives of the Incomplete Gamma Integral (Unscaled Version)
vglm

Fitting Vector Generalized Linear Models
plotdeplot.lmscreg

Density Plot for LMS Quantile Regression
pordlink

Poisson-Ordinal Link Function
posbernUC

Positive Bernoulli Sequence Model
posbernoulli.b

Positive Bernoulli Family Function with Behavioural Effects
posbernoulli.t

Positive Bernoulli Family Function with Time Effects
vglm.control

Control Function for vglm()
rdiric

The Dirichlet distribution
prinia

Yellow-bellied Prinia
probitlink

Probit Link Function
rcqo

Constrained Quadratic Ordination
rlplot.gevff

Return Level Plot for GEV Fits
vglmff-class

Class ``vglmff''
zipf

Zipf Distribution Family Function
rootogram4

Rootograms (S4 generic) for Assessing Goodness of Fit of Probability Models
rrvglm

Fitting Reduced-Rank Vector Generalized Linear Models (RR-VGLMs)
rrvglm-class

Class ``rrvglm''
Simplex

Simplex Distribution
simplex

Simplex Distribution Family Function
Zipf

The Zipf Distribution
smart.mode.is

Determine What Mode the Smart Prediction is In
smartpred

Smart Prediction
summaryvglm

Summarizing Vector Generalized Linear Model Fits
vcovvlm

Calculate Variance-Covariance Matrix for a Fitted VLM or RR-VGLM or QRR-VGLM Object
tikuv

Short-tailed Symmetric Distribution Family Function
wald.stat

Wald Test Statistics Evaluated at the Null Values
uninormal

Univariate Normal Distribution
waldff

Wald Distribution Family Function
wine

Bitterness in Wine Data
zeta

Riemann's Zeta Function
weightsvglm

Prior and Working Weights of a VGLM fit
Zeta

The Zeta Distribution
Zipfmb

The Zipf-Mandelbrot Distribution
Zipois

Zero-Inflated Poisson Distribution