VOC Spring Meeting 2015
The Dutch/Flemish classification society (VOC) announces its 2015 Spring Meeting to be held on May 29th at the Radboud University in Nijmegen.
For more details and registration, please see the meeting information page.
Farewell Prof. P.M. Kroonenberg
On November 14, 2014 professor P.M.
Kroonenberg, professor of multivariate analysis,
in particular of three-way data, celebrated his
retirement from the department of Child and
Family Studies, part of the Institute of Education and Child Studies, Leiden University. Festivities started with a symposium titled “A Celebration of Multiway Analysis”, discussing multiway methods in different fields of research, including research on the methodology itself.
and participants originated from all over the
world, including (in random order): Japan,
Australia, USA, Spain, France, Belgium, the
Netherlands, Norway, Czech Republik and
Topics were related to chemistry,
metabolomics, signal processing, psychology,
agriculture, closed form and iterative solutions,
contributions from Japan and how two-way
problems could be approached (better) using
thinking from multiway methods. Details about
the program, speakers and the abstracts can still be retrieved from this website.
Later that same afternoon prof. Kroonenberg gave his Dutch farewell lecture titled “De
driewegwereld kent geen grenzen” (The Threeway world has no boundaries) in the traditional Large Auditorium at the Academy Building. With an audience of about 200, he spoke about history
(referring back to the inaugural lecture in 2005),
current state of affairs, referring to experts in the
aforementioned fields of research and application,
and future directions and ideas in multiway
analysis. An example on musical data was
supported by a live demonstration on the pipe
organ. After two personal speeches addressing
prof. Kroonenberg, further celebrations took
place throughout the evening. In prof.
Kroonenberg's own words: "This was such a
wonderful day: I would not mind retiring again."
Prof. Pieter M. Kroonenberg remains affiliated
with the Institute of Education and Child Studies as a guest researcher for at least the near future.
25 Year Jubilee meeting 2014
The Dutch/Flemish classification society (VOC)
celebrated its 25th anniversary with a Jubilee
Meeting on November 6-7, 2014 in the beautiful
Abbey Hotel Rolduc at Kerkrade (The
Netherlands). We had an impressive program
with excellent contributions covering both theory
and applications of ordination and classification
with a broad spectrum of applications: Daniel
Oberski (Model fit evaluation by sensitivity
analysis), Lianne Ippel (Estimating multi-level
models in data-streams), Jeroen Jansen
(Revealing the information within Flow
Cytometry data using advanced and dedicated
Chemometrics), Marieke Timmerman
(Unraveling multivariate effects resulting from an
experimental design), Paul Eilers (Generalized
exponential tilting), Jelle Goeman (Two
folklores: ridge regression versus the lasso),
Willem Heiser (From Preference Mapping to
Preference Learning, with an Example of a
Prediction Tree for Rankings), Lieven de
Lathauwer (Tensor decompositions: golden tools
for data mining), Christian Hennig (Flexible
parametric bootstrap for testing homogeneity
against clustering and assessing the number of
clusters), Marco Riani (Robust Modern
Multivariate Data Analysis and Classification),
Patrick Groenen (Some Recent Biplots
Approaches), and Denny Borsboom (All quiet on
the psychometric front? Goals and challenges for
21st century psychometrics).
were followed by animated discussions. After 25
years, the VOC is still very much alive and
Katrijn Van Deun
The Jubilee meeting program is still available here.
The book of abstracts can be found here.