Marjolein Fokkema
Associate Professor
Amsterdam, North Holland, Netherlands
Summary
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Senior🎓
Top SchoolMarjolein Fokkema is an Associate Professor in Methods & Statistics for Psychology with a decade of experience translating psychometric problems into practical statistical learning solutions. She specializes in tree-based methods, multilevel models and splines, and is the author of popular R packages such as glmertree and pre that bridge mixed-effects modelling with interpretable prediction rules. Her work focuses on improving clinical decision making and psychological assessment, informed by her role on the Dutch Committee on Testing Matters and as an associate editor at the European Journal of Psychological Assessment. Based in Amsterdam, she combines rigorous academic research, open-source software development, and hands-on teaching—bringing methodological innovation directly into practice and training the next generation of psychometricians.
10 years of coding experience
9 years of employment as a software developer
Propedeutical exam, Philosophy, Propedeutical exam, Philosophy at Vrije Universiteit AmsterdamMSc, Psychology, MSc, Psychology at Vrije Universiteit Amsterdam (VU Amsterdam)PhD, Psychometrics and Quantitative Psychology, PhD, Psychometrics and Quantitative Psychology at VU University AmsterdamTheateropleiding Selma Susanna
Dutch, English
Stackoverflow
596reputation
33kreached
17answers
0questions
Github Skills (36)
deriving10
r-package10
feature-selection10
caret10
interpretable-machine-learning10
iml10
prediction10
rule10
ensembles9
classification8
regression8
statistics7
regression-models7
decision-tree6
rmarkdown6
Programming languages (2)
Github contributions (5)
marjoleinF/misc
Jan 2017 - Sep 2024
Contributions:53 pushes, 3 branches in 7 years 9 months
marjoleinF/pre
Dec 2016 - Jun 2022
an R package for deriving Prediction Rule Ensembles
Contributions:3 releases, 112 commits, 14 PRs in 5 years 6 months
r-packageimlpredictionrulederiving
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