Analyzing Spatial Models of Choice and Judgment with R
Chapter 4: Analyzing Similarities and Dissimilarities Data
Code Files:
double_center_nations.r:
Metric multidimensional scaling of nations similarities data using double-centering (the Torgerson solution).
Dataset: nations.Rda
optim_nations.r:
Metric multidimensional scaling of nations similarities data using numerical optimization.
Dataset: nations.Rda
smacof_metric_nations.r:
Metric multidimensional scaling of nations similarities data using SMACOF.
Dataset: nations.Rda
smacof_metric_nations_missing.r:
Metric multidimensional scaling of nations similarities data with missing data using SMACOF.
Dataset: nations.Rda
smacof_metric_nations_rotated.r:
Metric multidimensional scaling of nations similarities data with missing data using SMACOF; rotates solution.
Dataset: nations.Rda
smacof_nonmetric_nations.r:
Non-metric multidimensional scaling of nations similarities data using SMACOF.
Dataset: nations.Rda
smacof_nonmetric_nations_Procrustes_rotation.r:
Non-metric multidimensional scaling of nations similarities data using SMACOF; performs Procrustes rotation.
Dataset: nations.Rda
smacof_metric_nonmetric_senate_90.r:
Metric and non-metric multidimensional scaling of 90th Senate agreement score data using SMACOF; generates Shepard diagrams.
Dataset: senate.90.Rda
JAGS_mds_nations.r:
Bayesian multidimensional scaling of nations similarities data using JAGS.
Dataset: nations.Rda
JAGS model file: JAGS_mds_model.bug
smacof_indscal_2009_France.r:
Individual differences multidimensional scaling of the 2009 European Election Study (French module) Left-Right issue scale data.
Dataset: french.parties.individuals.Rda
Data for Exercises:
SupremeCourt.2011.Rda:
2011 US Supreme Court
CCES2010.GA10.Rda:
2010 Cooperative Congressional Election Study (Georgia 10th Congressional District)
CCES2010.GA10.bug:
JAGS model file to analyze the 2010 Cooperative Congressional Election Study (Georgia 10th Congressional District)
CHES2010.France.Rda:
2010 Chapel Hill Expert Survey (French Module)
Supplemental Links:
William G. Jacoby and David A. Armstrong II. 2014. "Bootstrap Confidence Regions for
Multidimensional Scaling Solutions." American Journal of Political Science 58(1): 264-278.
JAGS (Just Another Gibbs Sampler)
rjags package for R
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 Rank Order and Ratio Scale Data
Chapter 6: Analyzing Legislative Roll Call (Binary Choice) Data
Chapter 7: Advance Topics
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
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