Political Science Computational Laboratory
compute and optionally plot beta HDRs
add information about voting outcomes to a rollcall object
constrain item parameters in analysis of roll call data
constrain legislators' ideal points in analysis of roll call data
convert entries in a rollcall matrix to binary form
drop user-specified elements from a rollcall object
drop unanimous votes from rollcall objects and matrices
return the roll call object used in fitting an ideal model
Table of Actual Outcomes against Predicted Outcomes for discrete data ...
Control Parameters for Hurdle Count Data Regression
Hurdle Models for Count Data Regression
Testing for the Presence of a Zero Hurdle
analysis of educational testing data and roll call data with IRT model...
convert an object of class ideal to a coda MCMC object
inverse-Gamma distribution
nicely formatted tables
likelihood ratio test for over-dispersion in count data
plots an ideal object
plot methods for predictions from ideal objects
plot seats-votes curves
remap MCMC output via affine transformations
compute various pseudo-R2 measures
Methods for hurdle Objects
predicted probabilities from an ideal object
Methods for zeroinfl Objects
Predicted Probabilities for GLM Fits
predicted probabilities from fitting ideal to rollcall data
compute predicted probabilities from fitted models
read roll call data in Poole-Rosenthal KH format
create an object of class rollcall
A class for creating seats-votes curves
Monte Carlo estimate of pi (3.14159265...)
summary of an ideal object
summarize a rollcall object
trace plot of MCMC iterates, posterior density of legislators' ideal p...
convert roll call matrix to series of vectors
Vuong's non-nested hypothesis test
Control Parameters for Zero-inflated Count Data Regression
Zero-inflated Count Data Regression
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; goodness-of-fit measures for GLMs; data sets used in writing and teaching; seats-votes curves.