Analyzing Spatial Models of Choice and Judgment with R


Chapter 5: Unfolding Analysis of Rank Order and Ratio Scale Data


Useful Links

Poole, Keith T. 1984. "Least Squares Metric, Unidimensional Unfolding." Psychometrika 49: 311-323.

Poole, Keith T. 1990. "Least Squares Metric, Unidimensional Scaling of Multivariate Linear Models." Psychometrika 55: 123-149.

Bakker-Poole Bayesian Multidimensional Scaling

R Programs

MLSMU6 Metric Unfolding Procedure Metric Unfolding using SMACOF montecarlo_smacof_MLSMU6.r: Monte Carlo tests to compare the SMACOF and MLSMU6 procedures.



Bayesian Multidimensional Unfolding (PC: 32 bit) Bayesian Multidimensional Unfolding (PC: 64 bit) Bayesian Multidimensional Unfolding (Mac)
Datasets for Exercises

ANES2012.Rda: 2012 American National Election Study Feeling Thermometers

CES2011.Rda: 2011 Canadian Election Study Propensity to Vote Ratings

Supplemental Links:



Ryan Bakker and Keith T. Poole. 2013. "Bayesian Metric Multidimensional Scaling." Political Analysis 21(1): 125-140.


Book Chapters

Analyzing Spatial Models of Choice and Judgment with R
Chapter 1: Introduction
Chapter 2: The Basics of R
Chapter 3: Analyzing Issue Scales
Chapter 4: Analyzing Similarities and Dissimilarities Data
Chapter 5: Unfolding Analysis of Rating Scale Data
Chapter 6: Analyzing Legislative Roll Call (Binary Choice) Data
Chapter 7: Advanced Topics



Site Links

VOTEVIEW Blog
NOMINATE Data, Roll Call Data, and Software
Course Web Pages: University of Georgia (2010 - )
Course Web Pages: UC San Diego (2004 - 2010)
University of San Diego Law School (2005)
Course Web Pages: University of Houston (2000 - 2005)
Course Web Pages: Carnegie-Mellon University (1997 - 2000)
Analyzing Spatial Models of Choice and Judgment with R
Spatial Models of Parliamentary Voting
Recent Working Papers
Analyses of Recent Politics
About This Website
K7MOA Log Books: 1960 - 2017
Bio of Keith T. Poole
Related Links