R/LDATS.R
LDATS.RdPerforms two-stage analysis of multivariate temporal data using a combination of Latent Dirichlet Allocation (Blei et al. 2003) and Bayesian Time Series models (Western and Kleykamp 2004) that we extend for multinomial data using softmax regression (Venables and Ripley 2002) following Christensen et al. (2018).
Technical mathematical manuscript
End-user-focused vignette worked example
Computational pipeline vignette
Comparison to Christensen et al.
Blei, D. M., A. Y. Ng, and M. I. Jordan. 2003. Latent Dirichlet Allocation. Journal of Machine Learning Research 3:993-1022. link.
Christensen, E., D. J. Harris, and S. K. M. Ernest. 2018. Long-term community change through multiple rapid transitions in a desert rodent community. Ecology 99:1523-1529. link.
Venables, W. N. and B. D. Ripley. 2002. Modern and Applied Statistics with S. Fourth Edition. Springer, New York, NY, USA.
Western, B. and M. Kleykamp. 2004. A Bayesian change point model for historical time series analysis. Political Analysis 12:354-374. link.