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Multidimensional scaling provides a means of uncovering a latent structure underlying observed data, while estimating the number of latent dimensions. This package presents a means for scaling binary and count data, for example the votes and word counts for legislators. Future work will include an EM implementation and extend this work to ordinal and continuous data.
Package details 


Author  Marc Ratkovic, In Song Kim, John Londregan, and Yuki Shiraito 
Maintainer  Marc Ratkovic <ratkovic@princeton.edu> 
License  GPL (>= 2) 
Version  1.0 
Package repository  View on CRAN 
Installation 
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