UK OC OK?∗ A Note on Interpreting Optimal Classification Scores for the United Kingdom House of Commons
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چکیده
Scholars working on roll-call data for non-US parliament are exhorted to utilize Poole’s (2000) non-parametric Optimal Classification procedure for binary data, but rank orderings arising from application to Westminster are misleading, and certainly not ideological continua. The problem arises from the government-versus-opposition nature of British parliamentary politics and the strategic voting that is entailed therein. Moreover, the goodness of fit statistics for a one dimensional model of House of Commons voting have an ersatz accuracy. Advances in spatial analysis and ideal point estimation will need to consider this problem carefully. ∗We are grateful to David Firth and Keith Poole for comments and data assistance. All errors and omissions remain ours and ours alone. †Department of Political Science, University of Rochester [email protected] ‡Nuffield College Oxford Univesity, [email protected]
منابع مشابه
UK OC OK? Interpreting Optimal Classification Scores for the U.K. House of Commons
Poole’s (2000, Non-parametric unfolding of binary choice data. Political Analysis 8:211–37) nonparametric Optimal Classification procedure for binary data produces misleading rank orderings when applied to the modern House of Commons. With simulations and qualitative evidence, we show that the problem arises from the government-versus-opposition nature of British (Westminster) parliamentary pol...
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تاریخ انتشار 2006