Willem Heiser
Professor emeritus
- Name
- Prof.dr. W.J. Heiser
- Telephone
- +31 71 527 2727
- heiser@fsw.leidenuniv.nl
Short CV
Prof. Willem Heiser is Professor Emeritus in Psychology, Methodology and Statistics at the Leiden Faculty of Social and Behavioural Sciences. Also, he is Professor Emeritus in Data Theory at the Leiden Faculty of Science.
Research
Heiser focuses on what causes the methodology to become a unified subject and on the history of statistics and probability theory. His research covers the multivariate analysis, multidimensional scaling techniques, and methods for classification.
Professor emeritus
- Faculteit der Sociale Wetenschappen
- Faculteitsbureau
- Emeriti FSW
Professor emeritus Data theory
- Science
- Mathematisch Instituut
- Mathematisch Instituut
- Heiser W.J. & Meulman J.J. (2014), Borrowing strength from multi-way thinking by attacking two-way problems with multi-way methods. Invited paper at the symposium in honor of P.M. Kroonenberg, Leiden University, 14 November 2014. [lecture].
- Heiser W.J. (31 January 2014), Psychologie van het statistisch denken / Psychology of statistical thinking. Afscheidsrede / Address. Psychology, Leiden. [lecture].
- Heiser W.J. & d'Ambrosio A. (14 June 2012), Clustering of rankings using Kemenyu distances. CSNA 2012. Pittsburgh, Pennsylvania, USA. [lecture].
- Heiser W.J. & d'Ambrosio A. (9 July 2012), Classification of rankings within a Kemeny distance framework. IMPS 2012 77th annual meeting of the Psychometric Society. Lincoln, Nebraska, USA. [lecture].
- Heiser W.J. (11 October 2012), De evolutie van de statistiek. 10th Anniversary of the Centre for Policy related statistics of CBS (Statistics Netherlands). Leiden. [lecture].
- Heiser W.J. & d'Ambrosio A. (31 August 2011), Custering and prediction of rankings within a kemeny distance framework. invited speaker at the Joint Conference of the German Classification Society (GfKl). Frankfurt am Main. [lecture].
- Heiser W.J. (18 July 2011), Explanatory unfolding models for prediction of judgment and choice. 76th annual and 17th international meeting of the Psychometric Society (IMPS2011). HongKong. [lecture].
- Heiser W.J. (20 August 2009), Statistics meets psychology: the inspiration of John van de Geer. Invited lecture on the occasion of the start of the master's program Statistical Science for the life and behavioral sciences.. Leiden. [lecture].
- Heiser W.J. & Warrens M.J. (24 July 2009), Detecting complete positive regression: using the dominant axis of correspondence analysis. IMPS 2009, the 74th annual meering of the Psychometric Society.. Cambridge, England. [lecture].
- Heiser W.J. & Warrens M.J. (6 June 2008), Horseshoe effects in multiple correspondence analysis: distance transformations that let them disappear. CSNA 2008 Annual meeting of the Classification society of North America. St Louis. [lecture].
- Frank L.E. & Heiser W.J. (1 May 2006), Standard errors, prediction error and model tests in additive trees. Annual meeting of the Classification Society of North America (CSNA). Piscataway, U.S.A.. [lecture].
- Polak M.G., Heiser W.J. & Rooij M.J. de (1 June 2006), Testing single-peakedness of item responses. IMPS'2006, the 71th Annual meeting of the psychometric society. Montreal, Canada. [lecture].
- Heiser W.J. & Frank L.E. (1 June 2006), Network representations of city-block models. IMPS'2006, the 71th Annual meeting of the Psychometric Society. Montreal, Canada. [lecture].
- Heiser W.J. & Frank L.E. (1 July 2006), Network representations of city-block models. International Federation of Classification Societies, IFCS'2006. Ljubljana, Slovenia.. [lecture].
- Deun K. van, Mechelen I. van & Heiser W.J. (1 August 2006), Joint mapping of genes and conditions via non-metric multidimensional unfolding analysis. COMPSTAT'2006, the 17th conference of IASC-ERS. Rome, Italy. [lecture].
- Heiser W.J. (12 October 2006), Spatial analysis of preferences and attitude data allowing for differences between actors and effects of occasions. Invited address for the Polish SPSS user conference. Krakow, Poland. [lecture].
- Frank L.E. & Heiser W.J. (16 June 2004), Statistical inference in feature network models and additive trees. IMPS 2004, The 69th Annual Meeting of the Psychometric Society. Pacific Grove, CA. [lecture].
- Heiser W.J. & Busing F.M.T.A. (12 June 2003), Ordinal three-way MDS with PROXSCAL: An application of tehe reduced rank model to the Klingberg data. Annual meeting of the Classification Society of North America. Tallahassee Florida USA. [lecture].
- Heiser W.J. (11 June 2003), Interpretation of between-set distances in correspondence analysis. DIMACS workshop on algorithms for multidimensional scaling,II. Tallahassee Florida USA. [lecture].
- Heiser W.J. (29 June 2003), Interset distances in the barycentric representation of profiles. CARME 2003 Correspondence Analysis and Related Methods. Barcelona Spain. [lecture].
- Heiser W.J. (10 December 2003), Barycentric representation of profiles in correspondence analysis: Some new results. Rencontres de la Société Francophone de Calssification. Neuchatel Suisse. [lecture].
- Heiser W.J. (14 August 2003), Interpretation of between-set distances in correspondence analysis. seminar CTB. Monterey CA USA. [lecture].
- Deun K. van, Groenen P.J.F., Heiser W.J., Busing F.M.T.A. & Delbeke L. (18 July 2002), A combined vector-ideal point approach in metric unfolding by optimizing the correlation. 8th Conference of the International Federation of Classification Societies (IFCS). Cracow, Poland. [lecture].
- Frank L.E. & Heiser W.J. (17 July 2002), Stability of feature network models for proximity data. 8th Conference of the International Federation of Classification Societies. Krakau (Polen). [lecture].
- Kooij A.J. van der, Meulman J.J. & Heiser W.J. (16 July 2002), Local Minima in Categorical Multiple Regression (CATREG). IFCS Conference, 16 - 19 July 2002. Cracow, Poland. [lecture].
- Heiser W.J. (2002), Van bespiegeling naar empire: Statistiek in het hart van het methodologie onderwijs. Statistische Dag van de VVS. Utrecht (Annual Meeting of the Dutch Statistical. [lecture].
- Kooij A.J. van der, Meulman J.J. & Heiser W.J. (18 July 2002), Local minima in categorical multiple. IFCS'02: 8th Conference of the International Federation of Classification Societies. Cracow (Poland). [lecture].
- Deun K. van, Groenen P.J.F., Heiser W.J., Busing F.M.T.A. & Delbeke L. (16 July 2002), A Combined Vector-ideal Point Appoach in Metric Unfolding by Optimizing the Correlation. IFCS'02: 8th Conference of the International Federation of Classification Societies. Cracow ( Poland). [lecture].
- Roman Y., Heiser W.J. & Gonzalez A. (24 August 2002), MDS and Cluster Analysis for Big Sets of Dissimilarity Data (Poster). CompStat' 2002: XVth Conference on Computional Statistics. Berlijn. [lecture].
- De Gucht V.M.J., Fischler B. & Heiser W.J. (2 October 2002), Neuroticism, alexithymia, negative affect, and positive affect as determinants of medically unexplained symptoms. 16th Conference of the European Health Psychology Society. Lisbon (Portugal). [lecture].
- Kloot W.A. van der, Bouwmeester S. & Heiser W.J. (15 July 2001), Cluster Instability As A Result of Order Permutations of Input Data. Paper presented at International Meeting of the Psychometric Society.. Osaka, Japan, 15-19 July, 2001. [lecture].
- Heiser W.J. & Busing F.M.T.A. (6 August 2001), PROXSCAL: A General MDS Program For Two-way and Three-way Euclidean MDS With Restrictions on the Coordinates. Invited Paper presented at DIMACS Workshop on Algorithms for Multidimensional Scaling.. Piscataway, NJ, USA, 6-10 August, 2001. [lecture].
- Heiser W.J., Busing F.M.T.A. & Groenen P.J.F. (26 September 2001), A Solution for the Degeneracy Problem in Unfolding. Keynote address. 32nd European Mathematical Psychology Group Meeting.. Lisbon, Portugal, 26-29 September, 2001. [lecture].
- Busing F.M.T.A., Groenen P.J.F. & Heiser W.J. (15 July 2001), Nonmetric Unfolding with Penalized Stress. Invited paper presented at International Meeting of the Psychometric Society.. Osaka, Japan, 15-19 July, 2001. [lecture].
- Rooij M.J. de & Heiser W.J. (15 July 2001), A Distance Representation of the Quasi-symmetry Model and Special Cases. Invited paper presented at the International Meeting of the Psychometric Society.. Osaka, Japan, 15-19 July, 2001. [lecture].
- Rooij M.J. de & Heiser W.J. (2 August 2001), Distance Association Models for the Analysis of Association in Contingency Tables. Invited paper presented at the International Workshop on Matrices and Statistics.. Voorburg, The Netherlands, 2-3 August, 2001. [lecture].
- Rooij M.J. de & Heiser W.J. (6 August 2001), Triadic Distance Models: Properties and Estimation. Invited paper presented at DIMACS Workshop on Algorithms for Multidimensional Scaling.. Piscataway, NJ, USA, 6-10 August, 2001. [lecture].
- Rooij M.J. de & Heiser W.J. (2001), Distance Association Models for the Analysis of Change. Invited paper presented at the International Meeting of the Psychometric Society.. Osaka, Japan, 15-19 July, 2001. [lecture].
- Heiser W.J. (14 June 2001), Early Statistical Modeling of Latent Qualities: The History of Distance Measurement by Triangulation. Keynote Address, Meeting of the Classification Society of North America.. St. Louis, USA, 14-17 June, 2001. [lecture].
- Heiser W.J. (15 July 2001), Early Statistical Modeling of Latent Quantities: The History of Distance Measurement by Triangulation. Keynote Address, International Meeting of the Psychometric Society.. Osaka, Japan, 15-19 July, 2001. [lecture].
- Heiser W.J., Busing F.M.T.A. & Groenen P.J.F. (6 August 2001), Nonmetric Unfolding by Penalizing for Lack of Variation in the Transformed Proximities. Invited paper presented at DIMACS Workshop on Algorithms for Multidimensional Scaling.. Piscataway, NJ, USA, 6-10 August, 2001. [lecture].
- Frank L.E., Rooij M.J. de & Heiser W.J. (15 July 2001), Monte Carlo Simulation in Three-way Unfolding: Assessing the Combined Effect of Sparseness and Variation in the Cell Frequencies. Paper presented at the International Meeting of the Psychometric Society.. Osaka, Japan, 15-19 July, 2001. [lecture].
- Busing F.M.T.A., Groenen P.J.F. & Heiser W.J. (3 October 2000), Avoiding degeneracy in unfolding through the use of penalty function. Social Science Methodology in the New Millenium, Fifth International Conference on Logic and Methodology (International Sociological Association). Cologne, Germany. [lecture].
- Kooij A.J. van der, Meulman J.J. & Heiser W.J. (12 July 2000), Local minima in categorical multiple regression. IFCS-2000, The 7th Conference of the International Federation of Classification Societies. Namur, Belgium. [lecture].
- Bensmail H., Meulman J.J. & Heiser W.J. (15 March 2000), MCMC Latent class distance models for analyzing single stimulus preference ratings. The 24th Annual Conference of the German Classification Society (GfKl). Passau, Germany. [lecture].
- Heiser W.J. (3 October 2000), Early Roots of Statistical Modelling. Social Science Methodologyin the New Millenium, Fifth International Conference on Logic and Methodology (International Sociological Association). Cologne, Germany. [lecture].
- Heiser W.J. (11 July 2000), Measurement in the Low Countries. Millenium Talk, IFCS'2000: Data Analysis, Classification and Related Methods, 7th Conference of the International Federation of Classification Societies. Namur, Belgium. [lecture].
- Busing F.M.T.A., Meulman J.J., Groenen P.J.F. & Heiser W.J. (11 July 2000), Unfolding without degeneracies through penalized stress. IFCS-2000: The 7th Conference of the International Federation of Classification Societies.. Namur, Belgium. [lecture].
- Steverink M.H.M., Heiser W.J. & Kloot W.A. van der (11 July 2000), Avoiding Degenerate Solutions Using Kemeny's Distance. IFCS'2000: Data Analysis, Classification and Related Methods, 7th Conference of the International Federation of Classification Societies.. Namur, Belgium. [lecture].
- Rooij M.J. de & Heiser W.J. (3 October 2000), Probabilistic Unfolding Models for the Analysis of Change. Social Science Methodology in the New Millenium, Fifth International Conference on Logic and Methodology (International Sociological Association). Cologne, Germany. [lecture].
- Busing F.M.T.A., Groenen P.J.F. & Heiser W.J. (11 July 2000), Avoiding degeneracy in unfolding through the use of a penalty function. IFCS-2000: The 7th Conference of the International Classification Society. Namur, Belgium. [lecture].
- Meulman J.J., Heiser W.J. & Hubert L.J. (25 June 1999), Three-way Correspondence Analysis Through Individual Differences Models. Annual Meeting of the Psychometric Society. Lawrence, Kansas. [lecture].
- Rooij M.J. de & Heiser W.J. (20 July 1999), Triadic Distance Models for the Analysis of Asymmetric Three-way Proximity Data. 11th European Meeting of the Psychometric Society. Lueneburg, Germany. [lecture].
- Meulman J.J., Heiser W.J. & Hubert L.J. (20 July 1999), Three-way Correspondence Analysis Through Individual Differences Models. 11th European Meeting of the Psychometric Society. Lueneburg, Germany. [lecture].
- Meulman J.J., Heiser W.J. & Hubert L.J. (20 July 1999), Three-Way Correspondence Analysis Through Individual Differences Models. The 11th European Meeting of the Psychometric Society. Lueneburg (Germany). [lecture].
- Meulman J.J., Heiser W.J. & Kroonenberg P.M. (19 January 1999), Applied multivariate data analysis. ISED graduate course, Faculty of Social Sciences, Leiden University. Leiden (The Netherlands). [lecture].
- Meulman J.J., Heiser W.J. & Hubert L.J. (25 June 1999), Three-way correspondence analysis through individual differences models. Annual Meeting of the Psychometric Society. Lawrence, Kansas (USA). [lecture].
- Groenen P.J.F., Heiser W.J. & Meulman J.J. (22 September 1999), Distance smoothing for global optimization in least squares multidimensional scaling. SWS/VVS, PIONEER Lectures. Utrecht (The Netherlands). [lecture].
- Kooij A.J. van der, Meulman J.J. & Heiser W.J. (20 July 1999), Clustering of Row Profiles in Categorical Data Analysis. 11th European Meeting of the Psychometric Society. Lueneburg, Germany. [lecture].
- Heiser W.J. (13 November 1998), Van onzekerheid naar coïncidentie: De naturalisatie van het toeval in de 19e eeuw (From uncertainty to coincidence: The naturalization of chance in the 19th century). NOSMO-Methodologendag. Tilburg. [lecture].
- Heiser W.J. (8 September 1998), Fitting feature graphs to proximity data. Keynote Address International Conference on Statistical Data Analysis and Data Collection. Preddvor, Slovenia. [lecture].
- Heiser W.J. (3 February 1998), Van toeval naar kans: De geschiedenis van het meten van onzekerheid (From chance to probability: The history of the Measurement of Uncertainty). Studium Generale. Groningen. [lecture].
- Meulman J.J., Hubert L.J. & Heiser W.J. (22 July 1998), The Data Theory Scaling System. Paper presented at the 6th Conference of the International Federation of Classification Societies. Rome, Italy. [lecture].
- Heiser W.J. & Meulman J.J. (22 June 1998), A clustering method for a distribution of points on a Lattice. Paper presented at the 6th Conference of the International Federation of Classification Societies, contributed to Data Science, Classification and Related Methods (short papers pp. 154-157). Rome, Italy. [lecture].
- Rooij M.J. de & Heiser W.J. (20 July 1998), The slide-vector model for asymmetry in three-way multidimensional scaling of longitudinal categorical data. Paper presented at the 6th Conference of the International Federation of Classification Societies, contributed to Data Science, Classification and Related Methods (short papers pp. 104-107). Rome, Italy. [lecture].
- Groenen P.J.F., Heiser W.J. & Meulman J.J. (24 July 1998), Global optimization in least squares multidimensional scaling by distance smoothing. 6th Conference of the International Federation of Classification Societies. Rome, Italy. [lecture].
- Groenen P.J.F., Heiser W.J. & Meulman J.J. (23 July 1998), Global optimization in least squares multidimensional scaling by distance smoothing. Paper presented at the 6th Conference of the International Federation of Classification Societies, contributed to Data Science, Classification and Related Methods (short papers pp. 138-141). Rome, Italy. [lecture].
- Heiser W.J. (16 July 1997), Lezing 7. 10th European Meeting of the Psychometric Society. Santiago de Compostela, Spanje. [lecture].
- Groenen P.J.F., Heiser W.J. & Meulman J.J. (12 March 1997), City-block scaling: Smoothing strategies for avoiding local minima. 21st Annual Meeting of the Gesellschaft für Klassifikation. Potsdam, Germany. [lecture].
- Heiser W.J. (21 November 1997), Lezing 4. Vereniging voor Ordinatie en Classificatie. [lecture].
- Heiser W.J. & Meulman J.J. (21 February 1997), Lezing 1. 2nd World Conference of the International Association for Statistical Computing (IASC). Pasadena, California, USA. [lecture].
- Heiser W.J. (14 August 1997), Lezing 2. 3rd International Conference on Statistical Data Analysis based on the L1-norm and Related Methods. Neuchatel, Zwitserland. [lecture].
- Heiser W.J. (4 September 1997), Lezing 3. European Mathematical Psychology Group. Nijmegen. [lecture].
- Kroonenberg P.M. & Heiser W.J. (4 May 1997), Parallel factor analysis with constraints: Recent developments. TRICAP meeting on Three-way methods in chemistry and psychology. Lake Chelan, WA, USA. [lecture].
- Groenen P.J.F., Heiser W.J. & Meulman J.J. (16 July 1997), Solving the local minimum problem in multidimensional scaling by distance smoothing. 10th European Meeting of the Psychometric Society. Santiago de Compostela, Spain. [lecture].
- Heiser W.J. (16 February 1997), Lezing 5. International Sunbelt Social Network Conference. San Diego, CA, USA. [lecture].
- Kooij A.J. van der & Heiser W.J. (16 July 1997), Hierarchical GROUPALS: A simultaneous optimization method for hierarchical clustering using a minimum variance criterion, under optimal scaling of the variables. 10th European Meeting of the Psychometric Society. Santiago de Compostela, Spain. [lecture].
- Groenen P.J.F., Heiser W.J. & Meulman J.J. (16 August 1997), Iterative majorization in distance smoothing for multidimensional scaling to avoid local minima. 6th International workshop on matrix methods for statistics. Istanbul, Turkey. [lecture].
- Kroonenberg P.M. & Heiser W.J. (4 May 1997), Parallel factor analysis with constraints: Recent developments. Three-way methods in chemistry and Psychology. TRICAP97. Lake Chelan, WA. [lecture].