Person-Oriented Method and Perturbation on the Model

An implementation of a hybrid method of person-oriented method and perturbation on the model. Pompom is the initials of the two methods. The hybrid method will provide a multivariate intraindividual variability metric (iRAM). The person-oriented method used in this package refers to uSEM (unified structural equation modeling, see Kim et al., 2007, Gates et al., 2010 and Gates et al., 2012 for details). Perturbation on the model was conducted according to impulse response analysis introduced in Lutkepohl (2007). Kim, J., Zhu, W., Chang, L., Bentler, P. M., & Ernst, T. (2007) . Gates, K. M., Molenaar, P. C. M., Hillary, F. G., Ram, N., & Rovine, M. J. (2010) . Gates, K. M., & Molenaar, P. C. M. (2012) . Lutkepohl, H. (2007, ISBN:3540262393).


R package to perform time-series analysis and guage the temporal influence from one variable to another.

We created an R package named "pompom" (pompom is the initials of person-oriented modeling and perturbation on the model), and we will use the functions in "pompom" to compute iRAM (impulse response analysis metric) in this pacakge.

iRAM is built upon a hybrid method that combines intraindividual variability methods and network analysis methods in order to model individuals as high-dimensional dynamic systems. This hybrid method is designed and tested to quantify the extent of interaction in a high-dimensional multivariate system, and applicable on experience sampling data.

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install.packages("pompom")

0.2.0 by Xiao Yang, 6 months ago


Browse source code at https://github.com/cran/pompom


Authors: Xiao Yang [cre, aut] , Nilam Ram [aut] , Peter Molenaar [aut]


Documentation:   PDF Manual  


GPL-2 license


Imports lavaan, ggplot2, reshape2, qgraph, utils

Suggests knitr, rmarkdown, testthat


See at CRAN