Learn R Programming
⚠️There's a newer version (1.5.9) of this package.Take me there.

pscl (version 0.61)

Political Science Computational Laboratory, Stanford University

Description

Bayesian analysis of item-response theory (IRT) models, roll call analysis; computing highest density regions; maximum likelihood estimation of zero-inflated and hurdle models for count data; data sets used in writing and teaching at PSCL

Copy Link

Version

Install

install.packages('pscl')

Monthly Downloads

27,194

Version

0.61

License

GPL version 2 or newer

Maintainer

Simon Jackman

Last Published

January 31st, 2024

Functions in pscl (0.61)

idealToMCMC

convert an object of class ideal to a coda MCMC object
state.info

information about the American states needed for U.S. Congress
ntable

nicely formatted tables
predprob.zeroinfl

predicted probabilities from zero-inflated regression models
summary.ideal

summary of an ideal object
summary.zeroinfl

summary of zero-inflated regression models for count data
bioChemists

article production by graduate students in biochemistry Ph.D. programs
zeroinfl

zero-inflated regression models for count data
predprob.ideal

predicted probabilities from fitting ideal to rollcall data
hurdle

hurdle models for count data
constrain.items

constrain item parameters in analysis of roll call data
convertCodes

convert entries in a rollcall matrix to binary form
igamma

inverse-Gamma distribution
dropUnanimous

drop unanimous votes from rollcall objects and matrices
predict.ideal

predicted probabilities from an ideal object
extractRollCallObject

return the roll call object used in fitting an ideal model
predict.zeroinfl

generate predictions from zero-inflated regression count models
computeMargins

add information about voting outcomes to a rollcall object
ideal

analysis of roll call data (IRT models) via Markov chain Monte Carlo methods
summary.rollcall

summarize a rollcall object
partycodes

political parties appearing in the U.S. Congress
plot.predict.ideal

plot methods for predictions from ideal objects
predprob

compute predicted probabilities from fitted models
rollcall

create an object of class rollcall
readKH

read roll call data in Poole-Rosenthal KH format
summary.hurdle

summarize hurdle regression models for count data
sc9497

votes from the United States Supreme Court, from 1994-1997
vectorRepresentation

convert roll call matrix to series of vectors
s109

rollcall object, 109th U.S. Senate
vuong

Vuong's non-nested hypothesis test
unionDensity

cross national rates of trade union density
AustralianElections

elections to Australian House of Representatives, 1949-2004
constrain.legis

constrain legislators' ideal points in analysis of roll call data
dropRollCall

drop user-specified elements from a rollcall object
predprob.glm

Predicted Probabilties for GLM Fits
odTest

likelihood ratio test for over-dispersion in count data
tracex

trace plot of MCMC iterates, posterior density of legislators' ideal points
postProcess

remap MCMC output via affine transformations
betaHPD

compute and optionally plot beta HDRs
plot.ideal

plots an ideal object
prussian

Prussian army horse kick data