Marjolein Fokkema
Associate Professor
Amsterdam, North Holland, Netherlands
Summary
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Senior🎓
Top SchoolMarjolein Fokkema is an associate professor of methods and statistics for psychology at Leiden University, based in the Netherlands, specializing in statistical learning and tree-based methods for psychological assessment. She develops open-source R packages such as glmertree (generalized linear mixed-effects decision trees) and pre (prediction rule ensembles) to advance predictive modeling and clinical decision-making. An active scholar and editor, she serves on the Dutch Committee on Testing Matters (COTAN) and is an associate editor of the European Journal of Psychological Assessment. Her work blends psychometrics, multilevel modeling, and rule-based ensembles to improve accuracy and efficiency in psychological assessment. With a diverse academic background spanning philosophy and theatre training, she brings broad curiosity and strong communication to translating advanced statistics into practical tools for researchers and clinicians.
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)
r-package10
deriving10
feature-selection10
caret10
interpretable-machine-learning10
iml10
prediction10
rule10
ensembles9
classification8
regression8
statistics7
regression-models7
decision-tree6
glmnet6
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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