My research interests concern the development, analysis and implementation of model reduction (coarse-graining) techniques for high dimensional particle systems at multiple space and time scales, and so far includes studying macro-molecular and stochastic lattice systems.

I am particularly interested in the development of effective equilibrium and non-equilibrium coarse-grained models using statistical mechanics and information theory tools. Moreover, I study the development of data-driven models for molecular systems with variational and Bayesian inference methods.

• Parametrizing coarse grained models for molecular systems at equilibrium, E. Kalligiannaki, A. Chazirakis, A. Tsourtis, M. Katsoulakis P. Plechac and V. Harmandaris, EPJ ST, 225(8), 1347-1372, 2016, DOI: 10.1140/epjst/e2016-60145-x.
• Path-space variational inference for non-equilibrium coarse-grained systems, V. Harmandaris, E. Kalligiannaki, M. Katsoulakis and P. Plechac, J. Comp. Phys., 314(1), 355–383, 2016, DOI: 10.1016/j.jcp.2016.03.021.
  
• ​The geometry of force matching in coarse graining and related information metrics, E. Kalligiannaki, V. Harmandaris, M. Katsoulakis, P. Plechac. J. Chem. Phys. 143, 084105, 2015.
  
•  Spatial multi-level interacting particle simulations and information theory-based error quantification, E. Kalligiannaki, M. Katsoulakis, P. Plechac. SIAM J. Sci. Comput. 36-2, 2014, A634-A667. ​   
  
• Multilevel coarse graining and nano-pattern discovery in many particle stochastic systems, E. Kalligiannaki, M. Katsoulakis, P. Plechac,  D. Vlachos.  J. Comp. Phys., 231(6), 2012, 2599-2620. ​   
  
• Coupled coarse graining and Markov Chain Monte Carlo for lattice systems, E. Kalligiannaki, M. Katsoulakis, P. Plechac. “Numerical Analysis of Multiscale Computations”, Lect. Notes Comput. Sci. Eng. 82, 235-257, 2011. ​   
  
•  Conservation equations for the semiclassical Schrodinger equation near caustics, E. Kalligiannaki, G.N. Makrakis. Appl. Anal., 86(8), 917, 2007. ​ 

• ​PhD, Applied Mathematics,  University of Crete, Greece, 2007
  
•  M.Sc., Applied Mathematics, University of Crete, Greece, 2002 ​   
  
•  B.Sc., Mathematics, University of Crete, Greece, 1999 ​ 

• ​SIAM, SIAM-CSE, SIAM-UQ

• ​Travel Award, AWM - NSF, Summer  2011
  
•  Travel Award, Clay Mathematics Institute, Summer 2008 ​   
  
•  Manassaki Scholarship, University of Crete, 2006 ​   
  
•  Ph.D. Scholarship  “Herakleitos”, Greek Ministry of National Education and the European Union, 2002–2006 ​ 
•  Graduate Scholarship, IACM, Foundation for Re- search and Technology Hellas, 1999 - 2002 

• Stochastic Numerics Research Group​​   ​
  
• Computer, Electrical, Mathematics & Engineering Division ​