Jan de Leeuw

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Jan de Leeuw (born December 19, 1945) is a Dutch statistician and psychometrician. He is distinguished professor emeritus of statistics and founding chair of the Department of Statistics, University of California, Los Angeles. In addition, he is the founding editor and former editor-in-chief of the Journal of Statistical Software, as well as the former editor-in-chief of the Journal of Multivariate Analysis and the Journal of Educational and Behavioral Statistics.

Education Born in Voorburg, De Leeuw attended the Hogere Burgerschool in Voorburg and Alphen aan den Rijn from 1957 to 1963. He studied at Leiden University, where he received his propedeutic examination psychology summa cum laude in 1964; his candidate examination psychology summa cum laude in 1967; and his doctoral examination psychology summa cum laude in 1969. In 1973 he received his PhD cum laude with a thesis entitled "Canonical Analysis of Categorical Data" advised by John P. van de Geer. at the Institute of Mathematical Statistics and at the American Statistical Association in 2001.

De Leeuw is the originator of the Albert Gifi team that wrote Nonlinear Multivariate Analysis. In Multidimensional Scaling, Volume 1, Cox and Cox write that "Albert Gifi is the nom de plume of members, past and present, of the Department of Data Theory at the University of Leiden who devised a system of nonlinear multivariate analysis that extends various techniques, such as principal components analysis and canonical correlation analysis." De Leeuw is coauthor of Introducing Multilevel Modeling (1998) and co-editor of the "Handbook of Multilevel Analysis" (2009). A bibliography of 761 of de Leeuw's writings in the field of data analysis, statistics, and psychometrics from 1965 to 2019, with downloadable pdf's of 653 entries and web links to 100 more, is accessible from his homepage. Original software development : homals smacof anacor isotone aspect His more current smacof and homals software is on his GitHub page, which also has the manuscripts and supporting material for three books in progress. Since his retirement in 2014 De Leeuw has published more than 100 informal papers on Rpubs, on Research Gate, and on his homepage.

His former doctoral students include Willem Heiser, Jacqueline Meulman, Catrien Bijleveld, and Mine Çetinkaya-Rundel.