Package: wnpp Version: unavailable; reported 2002-11-19 Severity: wishlist * Package name : r-cran-mcmcpack Version : 0.1.4 Upstream Authors: Andrew D. Martin <[EMAIL PROTECTED]>, Kevin M. Quinn <[EMAIL PROTECTED]> * URL : http://scythe.wustl.edu/mcmcpack.html * License : GPL Description : routines for Markov Chain Monte Carlo model estimation in R
This is a set of routines for R that implement various statistical models using Markov Chain Monte Carlo estimation with Gibbs sampling, which allows "solving" models that would otherwise be intractable with traditional techniques, particularly problems in Bayesian statistics (where one or more "priors" are used as part of the estimation procedure, instead of an assumption of ignorance about the "true" point estimates), although MCMC can also be used to solve frequentist statistical problems without priors. Currently implemented are a number of ecological inference routines (for estimating individual attributes from aggregate data, such as electoral returns or census results), as well as models for traditional linear panel and cross-sectional data and some visualization routines for diagnostics. Additional models, including more EI routines (such as the model developed by Gary King), an item-response theory model, and a binary response (probit) model are planned for future releases. (Description from the upstream website.) MCMCpack is an R package that employs Markov chain Monte Carlo (MCMC) methods to fit commonly used statistical models. R is an extremely powerful language and environment for statistical computation and graphics. We presume that users of this package will be familiar with R. Currently MCMCpack allows the user to simulate from the posterior density of the following models: linear regression (with Gaussian errors), a general linear panel model, Wakefield's ecological inference model, Quinn's dynamic ecological inference model, and Wakefield's hierarchial ecological inference model. Soon we will make available code to estimate a probit model, and a one-dimensional item response theory model. The package also contains densities and random number generators for commonly used distributions that are not part of the standard R distribution, some additional functions that are useful for manipulating mcmc objects, and some data visualization tools for ecological inference. (Personal aside: this is one *cool* cutting-edge package, even if only about six of us Debianistas will appreciate it. And it's co-written by a political scientist to boot. :-) I will also package the Scythe C++ library and the coda package from CRAN [even though it's pure R code] that are required for this package to work. Both are also GPLed.) -- System Information: Debian Release: testing/unstable Architecture: i386 Kernel: Linux quantex.lordsutch.com 2.4.20-pre10-ac1 #2 Wed Oct 30 15:27:03 CST 2002 i686 Locale: LANG=en_US, LC_CTYPE=en_US