LAM
Some Latent Variable Models
Includes some procedures for latent variable modeling with a particular focus on multilevel data. The 'LAM' package contains mean and covariance structure modelling for multivariate normally distributed data (mlnormal(); Longford, 1987; <doi:10.1093/biomet/74.4.817>), a general Metropolis-Hastings algorithm (amh(); Roberts & Rosenthal, 2001, <doi:10.1214/ss/1015346320>) and penalized maximum likelihood estimation (pmle(); Cole, Chu & Greenland, 2014; <doi:10.1093/aje/kwt245>).
README
# LAM
#### Some Latent Variable Models
If you use `LAM` and have suggestions for improvement or have found bugs, please email me at robitzsch@leibniz-ipn.de.
Please always provide a minimal dataset, necessary to demonstrate the problem,
a minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and
all necessary information on the used librarys, the R version, and the OS it is run on, perhaps a sessionInfo().
#### Manual
The manual may be found here [https://alexanderrobitzsch.github.io/LAM/](https://alexanderrobitzsch.github.io/LAM/)
#### CRAN version
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The official version of `LAM` is hosted on CRAN and may be found [here](https://cran.r-project.org/package=LAM).
The CRAN version can be installed from within R using:
```r
utils::install.packages("LAM")
```
#### GitHub version
The version hosted [here](https://github.com/alexanderrobitzsch/LAM) is the development version of `LAM`.
The GitHub version can be installed using `devtools` as:
```r
devtools::install_github("alexanderrobitzsch/LAM")
```
Versions across snapshots
| Version | Repository | File | Size |
|---|---|---|---|
0.7-22 |
rolling linux/jammy R-4.5 | LAM_0.7-22.tar.gz |
67.1 KiB |
0.7-22 |
rolling linux/noble R-4.5 | LAM_0.7-22.tar.gz |
306.6 KiB |
0.7-22 |
rolling source/ R- | LAM_0.7-22.tar.gz |
67.1 KiB |
0.7-22 |
latest linux/jammy R-4.5 | LAM_0.7-22.tar.gz |
67.1 KiB |
0.7-22 |
latest linux/noble R-4.5 | LAM_0.7-22.tar.gz |
306.6 KiB |
0.7-22 |
latest source/ R- | LAM_0.7-22.tar.gz |
67.1 KiB |
0.7-22 |
2026-04-26 source/ R- | LAM_0.7-22.tar.gz |
67.1 KiB |
0.7-22 |
2026-04-23 source/ R- | LAM_0.7-22.tar.gz |
67.1 KiB |
0.7-22 |
2026-04-09 windows/windows R-4.5 | LAM_0.7-22.zip |
623.1 KiB |
0.7-22 |
2025-04-20 source/ R- | LAM_0.7-22.tar.gz |
67.1 KiB |