ΒΑΣΔΕΚΗΣ ΒΑΣΙΛΕΙΟΣ

ΒΑΣΙΛΗΣ ΒΑΣΔΕΚΗΣ

Καθηγητής
Email:vasdekis@aueb.gr

Σπουδές

Διδακτορικό στη Στατιστική (D.Phil in Statistics), Department of Statistics, University of Oxford (1989-1993).
M.Sc in Applied Statistics, Department of Statistics, University of Oxford (St. Peter’s College) (1988-1989).
Πτυχίο στα Μαθηματικά, Τμήμα Μαθηματικών, Πανεπιστήμιο Αθηνών (1983-1988).

Ακαδημαϊκή εμπειρία

Οικονομικό Πανεπιστήμιο Αθηνών, Τμήμα Στατιστικής:
Καθηγητής στη Στατιστική από 2016 έως σήμερα, Αναπληρωτής Καθηγητής (2009-2016), Επίκουρος Καθηγητής (2003-2009), Λέκτορας (1999-2003).

Πανεπιστήμιο Κρήτης, Τμήμα Ψυχολογίας:
Επίκουρος Διδάσκων στη Στατιστική, 1994-1998.

University of Oxford:
Φροντιστηριακά μαθήματα στη στατιστική, Queen’s College, University College.

Διοικητική εμπειρία

Αντιπρύτανης Ακαδημαϊκών Υποθέσεων και Προσωπικού, ΟΠΑ, 2020-2024.
Πρόεδρος Τμήματος Στατιστικής, ΟΠΑ, 2016-2020.
Διευθυντής Μεταπτυχιακών Σπουδών Τμήματος Στατιστικής, 2013-2016.

Ερευνητικά Ενδιαφέροντα

Μοντελοποίηση και συμπερασματολογία επαναλαμβανόμενων μετρήσεων συνεχών και διακριτών μεταβλητών,
μοντελοποίηση πολυμεταβλητών επαναλαμβανόμενων μετρήσεων με τη χρήση λανθανουσών μεταβλητών,
συμπερασματολογία μέσω ψευδο-πιθανοφανειών, ανάλυση δεδομένων κλινικών δοκιμών.

Διδασκαλία

Προπτυχιακά μαθήματα:
Statistics for Psychologists, Design and Analysis of Experiments, Linear Models, Multivariate Analysis Methods, Statistical Methods in Medicine.

Μεταπτυχιακά μαθήματα:
Generalized Linear Models, Analysis of Longitudinal Data, Clinical Trials, Categorical data analysis.

Διδακτορικοί και μεταδιδακτορικοί φοιτητές

Evgenia Tzompanaki (jointly with Professor Irini Moustaki, LSE), Thesis title: ‘Using and Εxpanding Hybrid Latent Variable Models For Modelling Missing Data and For Discovering Influential Points’, 2014.
Antonia Korre, Thesis title: ‘Goodness-of-fit statistics in Correlated Binary Data’, 2016.
Ioanna Athanassopoulou (jointly with Professor Petros Dellaportas, AUEB), Thesis title: ‘A Modeling Approach to Correlated Binary Outcomes’, 2017.
Kostas Florios, worked as a postgraduate student on ARISTEIA II project ‘Composite likelihood inference in dynamic latent variable models for longitudinal multivariate contingency tables’.

Επιλεκτικές Δημοσιεύσεις

1. Cagnone S., Moustaki, I. and Vasdekis V., (2009). Latent variable models for multivariate longitudinal ordinal responses. British Journal of Mathematical and Statistical Psychology, 62, 401-415.
2. Papathomas, M., Dellaportas, P. and Vasdekis, V.G.S. (2011). A novel reversible jump algorithm for generalized linear models. Biometrika, 98(1), 231-236.
3. Vasdekis, V.G.S., Cagnone, S. and Moustaki, I. (2012). A composite likelihood inference in latent variable models for ordinal longitudinal responses. Psychometrika 77(3), 425-441.
4. Vasdekis, V.G.S, Rizopoulos, D., Moustaki, I. (2014). Weighted composite likelihood estimation for a general class of random effects models. Biostatistics, 15(4), 677-689.
5. Litou, Chara and Vertzoni, Maria and Goumas, Constantinos and Vasdekis, Vassilis and Xu, Wei and Kesisoglou, Filippos and Reppas, Christos (2016). Characteristics of the Human Upper Gastrointestinal Contents in the Fasted State Under Hypo-and A-chlorhydric Gastric Conditions Under Conditions of Typical Drug--Drug Interaction Studies. Pharmaceutical Research, 33(6), 1399-1412.
6. Kokkinaki, Theano S and Vasdekis, VGS and Koufaki, Zaharenia E and Trevarthen, Colwyn B. (2017). Coordination of Emotions in Mother--Infant Dialogues. Infant and Child Development, 26(2).
7. Korre, A. and Vasdekis, V.G.S. (2018). Goodness-of-fit tests for random effect models with binary responses. Statistics in Medicine, 37(29), 4571-4587.
8. Korre, A. and Vasdekis, V.G.S. (2020) Weighted cumulative sum tests for random effect models with binary responses, Statistical Methods in Medical Research, 29(8), 2167-2178.
9. Kokkinaki, T.S., Vasdekis, V.G.S. and Devpouche, E. (2020). Maternal and Paternal infant-directed speech to girls and boys: An exploratory study. European Journal of Developmental Psychology, 17(3), 379-414.
10. L Guastadisegni, S Cagnone, I Moustaki, V Vasdekis (2021). The asymptotic power of the Lagrange multiplier tests for misspecified IRT models, Quantitative Psychology, 275-284.
11. L Guastadisegni, S Cagnone, I Moustaki, V Vasdekis (2022). Use of the Lagrange multiplier test for assessing measurement invariance under model misspecification, Educational and Psychological Measurement 82 (2), 254-280.
12. T Kokkinaki, M Markodimitraki, VGS Vasdekis (2023). Maternal speech to singleton and first-born dizygotic twin infants: a four-month longitudinal and naturalistic study, European Journal of Developmental Psychology, 1-32.
13. T Kokkinaki, M Markodimitraki, VGS Vasdekis, (2023). Comparing speech acts and complexity of maternal speech to singleton and firstborn dizygotic twin infants, Early Child Development and Care, 1-19.
14. Korre, A. and Vasdekis, V.G.S. (2023). Bias Correction in random effects models with sparse binary responses. Statistical Methods in Medical research, 32(11), 2226-2239.
15. L Guastadisegni, S Cagnone, I Moustaki, V Vasdekis (2024). The generalized Hausman test for detecting non-normality in the latent variable distribution of the two-parameter IRT model, accepted for publication by the British Journal of Mathematical and Statistical Psychology.

Επιλεκτικά Συνέδρια

1. Vasdekis, V.G.S., Florios, K., Moustaki, I. and Rizopoulos, D. (2017). A weighted composite likelihood estimator through an information criterion. Paper presented in the 9th EMR-IBS and Italian Region Conference 2017, Thessaloniki, Greece.
2. Vasdekis, V.G.S., Florios, K., Moustaki, I. and Rizopoulos, D. (2018). Model average weighted estimators for latent variable models in a longitudinal data setting. Paper presented in the ERCIM2019 held in Piza, Italy.
3. L Guastadisegni, I Moustaki, S Cagnone, V Vasdekis (2022). Detecting latent variable non-normality through the generalized Hausman test. Paper presented in the IMPS2022 held in Bologna, Italy.

Αλλες Επιστημονικές Δραστηριότητες

January 1997-May 2001: Cooperation with the Greek Institute of Food during the European projects DAFNE I, DAFNE II, FAIR-97-3096: Methodology for the exploitation of Household Budget Surveys food data and results on food availability in 5 European countries.
“PYTHAGORAS project: Research teams support to Universities”. Project title: Analysis of correlated binary data through synthesis of classic and Bayesian inferential techniques (2004) (50,000E).
“A pairwise likelihood inference in latent variable models for ordinal responses”: Funded by the Basic Research Funding Programme, Athens University of Economics and Business, Academic year 2009/10 (4000E).
“Composite likelihood inference in dynamic latent variable models for ordinal data”: Funded by the Basic Research Funding Programme, Athens University of Economics and Business, Academic year 2010/11 (6000E).
“Composite likelihood inference in dynamic latent variable models for longitudinal multivariate contingency tables”, Funded by program ARISTEIA II, 2014-2015 (100,000E).

Διάφορα

Υποτροφία ΙΚΥ για τη διεξαγωγή διδακτορικής έρευνας 1989-1993.
Fellow of the Royal Statistical Society (UK).