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Zelig (version 4.1-3)

Everyone's Statistical Software

Description

Zelig is an easy-to-use program that can estimate, and help interpret the results of, an enormous range of statistical models. It literally is ``everyone's statistical software'' because Zelig's simple unified framework incorporates everyone else's (R) code. We also hope it will become ``everyone's statistical software'' for applications and teaching, and so have designed Zelig so that anyone can easily use it or add their programs to it. Zelig also comes with infrastructure that facilitates the use of any existing method, such as by allowing multiply imputed data for any model, and mimicking the program Clarify (for Stata) that takes the raw output of existing statistical procedures and translates them into quantities of direct interest.

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Version

Install

install.packages('Zelig')

Monthly Downloads

8

Version

4.1-3

License

GPL (>= 2)

Maintainer

James Honaker

Last Published

February 19th, 2013

Functions in Zelig (4.1-3)

ZeligDescribeModel

Produce a 'description' Object from the Name of a Model

Param Method for the 'probit' Zelig Model

describe.poisson

Describe the `poisson' model to Zelig

as.data.frame.setx

Coerce a setx Object into a data.frame

bootstrap.gamma

Bootstrap Parameters for Zelig ``gamma'' GLM

Describe a ``exp'' model to Zelig

Extract the fitted model object from the Zelig object

Zelig Everyone's Statistical Software

as.parameters.default

??? -> parameters

Compute the Maximum Value of a Vector

Convert Boot Object to a Vector

Compute the Minumum Value of a Vector

ZeligListModels

Get a Character-Vector of All Models with a 'zelig2' Function

ZeligListTitles

List the Titles of the Zelig Statistical Models

Simulation Data for model Two-Stage Least Square (twosls) that corresponds to method 2SLS of systemfit

as.description.description

description -> description

Table of links for Zelig

constructDataFrame

Construct Data Frame Construct and return a tiny (single-row) data-frame from a larger data-frame, a list of specified values, and a formula

Generic Method for Converting Objects into 'parameters'

as.description.list

list -> description

as.summarized.list

list -> summarized.qi Convert a list into a ``summarized.qi'' object

Generic Method for Converting Various Objects into 'qi' Objects 'qi' objects are list-style objects used by the 'summarize' function to compute simple summaries about the simulated data. For readability and and simplicity purposes, the 'qi' function typically returns a list of named simulations. This list is converted internally by Zelig into a 'qi' object so that several methods can be easily applied to the Quantities of Interest: plot, summarize, and print

bootstrap.default

Produce Boot-strapped Parameters for a Statistical Model

describe.probit

Describe the `probit' model to Zelig

Extract ancillary parameters from `parameters' objects

Citation information for a 'description' object

Generic Method for Casting Objectst as 'summarized' Objects

parseFormula.list

Parse List-Style Zelig Formulae

cluster.formula

Generate Formulae that Consider Clustering

is.valid.qi.list

Check If Object Is a List of Valid Quantities of Interest

Convert call Object to a String

list.zelig.dependent.packages

Get a List of Packages Installed on the Current Machine that Depend on Zelig

bootstrap.normal

Bootstrap Parameters for Zelig ``normal'' GLM

U.S. Presidential Approval Data

Table of links for Zelig

Freedom of Speech Data

depends.on.zelig

Whether a Statistical Package Depends on the Zelig Software Suite

model.matrix.multiple

Create Design Matrix of a multiple Object

Social Security Expenditure Data

as.parameters.parameters

parameters -> parameters This is merely an identity function when casting 'parameters' objects into 'parameters'.

getResponseTerms.formula

Get Response Terms from a Standard Formula

Hook to Clean-up MCMC Factor Object

as.parameters.list

list -> parameters

bootstrap.negbinom

Bootstrap Parameters for Zelig ``negbinom'' GLM

Method for Simulating Quantities of Interest wrom 'zelig' Objects

Generic method for extracting variables from both S3 and S4 fitted model object

Compute the Statistical Median of a Vector

U.S. Supreme Court Vote Matrix

Get a TeX-style Citation

list.zelig.models

List Zelig Models Installed on the Current Machine

describe.default

Default describe function for an arbitrary model This method exists solely as a backup when an author does not contribute a 'describe' function for their model

param method for the `gamma' Zelig model

Constructor for the 'description' class

Simulation Data for model Three-Stage Least Square (threesls) that corresponds to method 3SLS of systemfit

Bundle Data-sets for Multiple Imputation

Default Boot-strapping procedure

Convert of Vector of Bootstrapped Parameters to a List-style Boot Object

Test If Value is Interpretable as a QI

coef.parameters

Return Simulations of Parameter Coefficients

Method for extracting the inverse link function from 'parameters' objects

Estimate Parameters for the ``relogit'' Zelig Mdoel

Simulated Example of Schoolchildren Friendship Network

describe.normal

Describe the normal model to Zelig

Political Economic Risk Data from 62 Countries in 1987

Help system for Zelig models

model.matrix.parseFormula

Construct Design Matrix from a Parsed, Zelig-style Formula

getResponseTerms.list

Get Response Terms from a List-style Formula

print.summary.pooled.sim

Print a Summary of a Set of Pooled Simulated Interests

Method for plotting pooled simulations by confidence intervals

Find a Partial or Exact Match from a Vector of Strings Searches a vector of character-string, and returns the best match.

The Names of a 'qi' Object

summary.glm.robust

Summary of Generalized Linear Model with Robust Error Estimates

summary.Relogit2

Summary for ``Relogit2'' Fitted Model

simulations.parameters

Return Simulations of Parameter Coefficients

Param Method for the 'normal' Zelig Model

print.summarySim.MI

Print Multiply Imputed Simulations Summary

Whether an Object is a Formula

Compute the Statistical Mode of a Vector

Sample data for bivariate probit regression

Describe a `logit' model to Zelig

Generic Method for Casting 'description' Objects

Return value for a zelig2-function

Coalition Dissolution in Parliamentary Democracies, Modified Version

Generic Method for ``bootstrap''

getResponseTerms

Get Response Terms from a Zelig-style Formula

Param Method for the 'negbinom' Zelig Model

make.parameters

??? For use with cmvglm

model.frame.multiple

Create Model Frame from multiple Object

summary.pooled.sim

Return a Summary of a Set of Pooled Simulated Interests

Method for Replicating Simulated Quantities of Interest

is.zelig.compliant

Whether a R-Package Contains a 'Yes' in its DESCRIPTION File's 'Zelig' Field

Method for summarizing simulations of quantities of interest

Method to describe a model to Zelig

Return a Value from a zelig Fitted Model

as.matrix.pooled.setx

Convert a ``pooled.setx'' Object to a Matrix

list -> qi This function has a lot of room to go wrong. It tries o detect whether the zelig model is old-style or new-style (as of 4/4/2011). Eventually this feature should be phased out.

Find the Zelig package that a particular model belong to

Count the Depth of a List Object

Set Explanatory Variables for Multiply Imputed Data-sets This function simply calls setx.default once for every fitted model within the 'zelig.MI' object

Generic Method for Simulating Ancillary/Auxillary Parameters of Zelig Models

Voting Data from the 1988 Mexican Presidental Election

Whether an Arbitrary R-package has a Zelig2 Function within Its Namespace

special_print_MATRIX

Method for Printing Summarized QI's in a Matrix Form

makeModelMatrix

Make a Model Matrix from a Zelig-Style Formula

Swiss Fertility and Socioeconomic Indicators (1888) Data

Print values of ``zelig'' objects

Describe a ls model to Zelig

as.summarized.summarized.qi

summarized.qi -> summarized.qi

summary.Relogit

Summary for ``Relogit'' Fitted Model

Param Method for the 'poisson' Zelig Model

constructDesignMatrix

Construct Design Matrix from Construct and return a design matrix based on a tiny data-frame (single-row).

print.summary.MCMCZelig

Print a Summary MCMCZelig Object

Militarized Interstate Disputes

The Discretized Painter's Data of de Piles

Param Method for the tobit Zelig Model

describe.negbinom

Describe the negbinom model to Zelig

Param Method for the logit Zelig Model

print.qi.summarized

Print Method for Summarized Quantities of Interest

Method for extracting the link function from 'parameters' objects

Constructor for QI Summarized Class This class takes an arbitrary number of the _same_ type of quantities of interest labels them, then merges them into one simple printable block. In particular, this class determines which print function to use based on the the type and size od data to be passed to the print function.

plot.pooled.sim

Method for plotting pooled simulations by confidence intervals

Sample Turnout and Demographic Data from the 2000 Current Population Survey

Individual Preferences Over Immigration Policy

Zelig Object Summaries

Simulate Multiply Imputed Data

loadDependencies

Load External Dependencies Safely and Dynamically

simulation.matrix

Get Simulations as a Matrix

Macroeconomic Data

Produce All Combinations of a Set of Lists

getPredictorTerms

Get Predictor Terms from Zelig-style Formulae

Uppercase First Letter of a String

Produce All Combinations of a Set of Lists

Summarry of Multiply Imputed Statistical Models

Name Elements of an Object

parseFormula.Formula

Parse ``Formula''-style Zelig Formulae

Default Method for ``param''

Method for plotting simulations

Print values of `setx' objects

Reduce MI Formulas Take a formula in any of the reduced form or in a structural form and return the most reduced form of that formula

Generic Method for Replicating Data

Estimate Parameters for the ``relogit'' Zelig Mdoel

print.summary.relogit

Print Summary of a Rare-event Logistic Model

Matrix Transpose of a ``setx'' Object

1932 Weimar election data

simulations.plot

Plot Quantities of Interest in a Zelig-fashion

Constructor for the 'ignore' class This class is included for future use, and is currently not used in any Zelig model. It is designed for use with zelig2* functions

Param Method for the exp Zelig Model

Constructor for `parameters' class

Parse Formulas for Zelig Models

Generic Method for Computing Quantities of Interest

Creates a Skeleton for a New Zelig package

print.summary.sim

Print Values of a Summarized ``sim'' Object

Hook to Update the Zelig Call with the Appropriate Call Object

Get Description Object Used to Cite this Zelig Model

Parse Zelig-style Formulae

Store Object in Environment with a Fake Name

Zelig Bridge Functions to Bayesian Models

Model Terms for a Zelig Object

Compute quantities of interest for 'exp' Zelig models

Print values of `sim' objects

Multilateral Economic Sanctions

Print a Quantity of Interest in Human-Readable Form

Print a Bundle of Data-sets

Describe a ``tobit'' model to Zelig

Sample Data on Home Runs Hit By Mark McGwire and Sammy Sosa in 1998.

Simulated Example of Social Network Data

Hook to Clean-up MCMC Objects

makeZeligObject

Make an Individual Zelig Object

robust.gee.hook

Classify Fitted Object as Naive or Robust

Param Method for the 'ls' Zelig Model

Bridge between Zelig and the GEE Model Fitting Functions

special_print_LIST

Method for Printing Summarized QI's in a List Form

Generic methonf for summarizing simualted quantities of interest

Convert a 'setx' Object to a Matrix

Setting Explanatory Variable Values

Plot graphs of simulated multiply-imputed data

Convert a Formula into 'lmer' Representation from Reduced Form Take a formula in its reducd from and return it as a 'lmer' representation (from the lme4 package). This is basically removing the starting 'tag' from each term.

robust.glm.hook

Hook for ``glm'' Models in Zelig

Create Function Call

print.summary.relogit2

Print Summary of a Rare-event Logistic Model

Attach Variables to a Function

Receiver Operator Characteristic Plots

Simulation Data for Ecological Inference

Generic Method for Computing and Organizing Simulated Quantities of Interest Simulate quantities of interest from the estimated model output from zelig() given specified values of explanatory variables established in setx(). For classical maximum likelihood models, sim() uses asymptotic normal approximation to the log-likelihood. For Bayesian models, Zelig simulates quantities of interest from the posterior density, whenever possible. For robust Bayesian models, simulations are drawn from the identified class of Bayesian posteriors. Alternatively, you may generate quantities of interest using bootstrapped parameters.

Method for summarizing simulations of multiply imputed quantities of interest

Create a table, but ensure that the correct columns exist. In particular, this allows for entires with zero as a value, which is not the default for standard tables

Default Method for Replicating Statistics

Tobin's Tobit Data

structuralToReduced

Transform the Multilevel's Structural Formulas Into Reduced Form

summarize.default

Summarize Simualted Quantities of Interest

termsFromFormula

Extract Terms from Zelig-style Formulae

Model Terms for 'vglm' Models

Estimating a Statistical Model

Set explanatory variables

Extract Terms from a multiple Object

Coalition Dissolution in Parliamentary Democracies

Freedom of Speech Data

Zelig to Basic GLM Fitting Functions

Build Formula ???

Simulation Data for model Seemingly Unrelated Regression (sur) that corresponds to method SUR of systemfit

is.zelig.package

Wether an Installed R-Pack Depends on Zelig

Interface between Zelig and svyglm

Describe the gamma model to Zelig

plot.simulations

Plot Any Simulation from the Zelig Core Package

Fit a rare-event logistic model in Zelig

Split a List into Two Lists This functions takes any list, and splits into two lists - one containing the values of arguments with specifically specified values and those without specified values.

Turnout Data Set from the National Election Survey

Interface Between Zelig Models and External Functions