Willem J. Heiser
Willem J. Heiser
professor of Data Theory
Verified email at Fsw.Leidenuniv.nl - Homepage
Cited by
Cited by
Alexithymia and somatisation: a quantitative review of the literature
V De Gucht, W Heiser
Journal of psychosomatic research 54 (5), 425-434, 2003
Principal components analysis with nonlinear optimal scaling transformations for ordinal and nominal data
JJ Meulman, AJ Van der Kooij, WJ Heiser
The Sage handbook of quantitative methodology for the social sciences, 49-72, 2004
Multidimensional scaling with restrictions on the configuration
J De Leeuw, WJ Heiser
Multivariate analysis 5 (1), 501-522, 1980
SPSS Categories 10.0
JJ Meulman, WJ Heiser
SPSS Incorporated, 1999
Understanding the differential impact of outcome monitoring: Therapist variables that moderate feedback effects in a randomized clinical trial
K de Jong, P van Sluis, MA Nugter, WJ Heiser, P Spinhoven
Psychotherapy research 22 (4), 464-474, 2012
13 Theory of multidimensional scaling
J de Leeuw, W Heiser
Handbook of statistics 2, 285-316, 1982
Convergence of correction matrix algorithms for multidimensional scaling
J De Leeuw, WJ Heiser
Geometric representations of relational data 36, 735-752, 1977
The identification of Parkinson's disease subtypes using cluster analysis: a systematic review
SM Van Rooden, WJ Heiser, JN Kok, D Verbaan, JJ Van Hilten, J Marinus
Movement disorders 25 (8), 969-978, 2010
Unfolding analysis of proximity data
WJ Heiser
Doctoral dissertation, Leiden University, 1981
Neuroticism, alexithymia, negative affect, and positive affect as determinants of medically unexplained symptoms
V De Gucht, B Fischler, W Heiser
Personality and Individual Differences 36 (7), 1655-1667, 2004
Convergent computation by iterative majorization: Theory and applications in multidimensional data analysis
WJ Heiser
Recent advances in descriptive multivariate analysis, 157-189, 1995
The Outcome Questionnaire (OQ‐45) in a Dutch population: A cross‐cultural validation
K de Jong, MA Nugter, MG Polak, JEA Wagenborg, P Spinhoven, ...
Clinical Psychology & Psychotherapy: An International Journal of Theory …, 2007
Avoiding degeneracy in multidimensional unfolding by penalizing on the coefficient of variation
FMTA Busing, PJK Groenen, WJ Heiser
psychometrika 70 (1), 71-98, 2005
The tunneling method for global optimization in multidimensional scaling
PJF Groenen, WJ Heiser
Psychometrika 61 (3), 529-550, 1996
Two purposes for matrix factorization: A historical appraisal
L Hubert, J Meulman, W Heiser
SIAM review 42 (1), 68-82, 2000
Cluster differences scaling with a within-clusters loss component and a fuzzy successive approximation strategy to avoid local minima
WJ Heiser, PJF Groenen
Psychometrika 62 (1), 63-83, 1997
Homogeneity analysis: exploring the distribution of variables and their nonlinear relationships
WJ Heiser, JJ Meulman
University of Leiden, 1992
Mathematical derivations in the proximity scaling (PROXSCAL) of symmetric data matrices
JJF Commandeur, WJ Heiser
Leiden: Department of Data Theory, University of Leiden, 73, 1993
Clusteringn objects intok groups under optimal scaling of variables
S Van Buuren, WJ Heiser
Psychometrika 54 (4), 699-706, 1989
PROXSCAL: A multidimensional scaling program for individual differences scaling with constraints
F Busing, JJF Commandeur, WJ Heiser, W Bandilla, F Faulbaum
Softstat 97, 67-74, 1997
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