spifa: Bayesian Spatial Item Factor Analysis
Fits spatial item factor analysis models for binary responses, following Chacón-Montalván, E. A., Parry, L., Giorgi, E., Torres, P., Orellana, J. D. Y., Moraga, P., and Taylor, B. M. (2025) <doi:10.1214/25-AOAS2072>, using full Bayesian inference via adaptive Metropolis-Hastings within Gibbs sampling and auxiliary variables with a probit link function. The latent factors are modelled as the sum of a predictor effect, a multivariate Gaussian process capturing spatial dependence, and a multivariate non-spatial term, allowing users to fit and predict spatially-referenced constructs such as food insecurity or socioeconomic indices. Standard exploratory and confirmatory item factor analysis are supported as particular cases, simply by dropping the spatial structure.
| Version: | 0.1.0 |
| Depends: | R (≥ 4.1.0) |
| Imports: | Rcpp (≥ 0.12.13), RcppTN, tibble, dplyr, tidyr, sf, ggplot2, posterior, ggridges, patchwork |
| LinkingTo: | Rcpp, RcppArmadillo, RcppTN |
| Suggests: | knitr, rmarkdown, testthat (≥ 3.0.0), mirt, gstat |
| Published: | 2026-10-22 |
| DOI: | 10.32614/CRAN.package.spifa (may not be active yet) |
| Author: | Erick A. Chacón-Montalván
 [aut, cre],
Emanuele Giorgi [ctb],
Benjamin M. Taylor [ctb] |
| Maintainer: | Erick A. Chacón-Montalván <erick.chaconmontalvan at wur.nl> |
| BugReports: | https://github.com/ErickChacon/spifa/issues |
| License: | GPL-3 |
| URL: | https://github.com/ErickChacon/spifa, https://ErickChacon.github.io/spifa/ |
| NeedsCompilation: | yes |
| Citation: | spifa citation info |
| Materials: | README, NEWS |
| CRAN checks: | spifa results |
Documentation:
| Reference manual: | spifa.html , spifa.pdf |
| Vignettes: |
Bayesian Spatial Item Factor Analysis (source, R code) Data preparation (source, R code) Model types (source, R code) Advanced features (source, R code) Integrated workflow (source, R code) |
Downloads:
| Package source: | spifa_0.1.0.tar.gz |
| Windows binaries: | r-devel: not available, r-release: not available, r-oldrel: not available |
| macOS binaries: | r-release (arm64): spifa_0.1.0.tgz, r-oldrel (arm64): spifa_0.1.0.tgz, r-release (x86_64): spifa_0.1.0.tgz, r-oldrel (x86_64): spifa_0.1.0.tgz |
Linking:
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