Document Detail


Avoiding degeneracy in metric unfolding by penalizing the intercept.
MedLine Citation:
PMID:  17067419     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
It has long been thought that degeneracy in unfolding only concerned non-metric unfolding. Recently, Busing, Groenen, and Heiser have established that degeneracy occurs for all transformations that include estimation of an intercept and a slope. Consequently, degeneracy also plagues metric unfolding, since one member of the metric transformation family, the interval transformation, includes estimation of both an intercept and a slope. In this paper, a simple solution is proposed to the degeneracy problem for metric unfolding by penalizing for an undesirable intercept. An application of this approach will illustrate its potential.
Authors:
Frank M T A Busing
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The British journal of mathematical and statistical psychology     Volume:  59     ISSN:  0007-1102     ISO Abbreviation:  Br J Math Stat Psychol     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2006-10-27     Completed Date:  2007-02-06     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0004047     Medline TA:  Br J Math Stat Psychol     Country:  England    
Other Details:
Languages:  eng     Pagination:  419-27     Citation Subset:  IM    
Affiliation:
Department of Psychology, Leiden University, The Netherlands. busing@fsw.leidenuniv.nl
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MeSH Terms
Descriptor/Qualifier:
Algorithms
Bias (Epidemiology)*
Choice Behavior
Computer Graphics
Data Interpretation, Statistical*
Humans
Likelihood Functions*
Linear Models*
Multivariate Analysis
Numerical Analysis, Computer-Assisted
Probability*
Social Behavior*
Software

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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