Group Members

Jilles is Tenured Faculty at the CISPA Helmholtz Center for Information Security, where he leads the Exploratory Data Analysis group. In addition, he is affiliated as Senior Researcher with the Database and Information Systems group of the Max Planck Institute for Informatics, as well as Professor at the Department of Computer Science of Saarland University.

His research is mainly concerned with exploratory data mining and interpretable machine learning. That is, developing theory and algorithms for summarising data in easily understandable terms. To identify what you need to know, i.e., what is the most interesting structure in the data, he often employs information theoretic methods. In particular, the principles of Minimum Description Length (MDL) and Maximum Entropy have proven to be highly valuable tools.

Currently he is investigating techniques for identifying informative local structures in large collections of complex data; how to efficiently mine good data descriptions directly such data; how to mine very large graphs, including characterising influence propagation in social networks; and, last but not least, how to determine cause and effect, i.e. causal inference and modelling.

Jilles Vreeken
Professor
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5
Room 1.08
66123 Saarbrücken, Germany
jv@cispa.de
+49 681 87083 2173
personal webpage

Corinna Coupette is a PhD student at the Max Planck Institute for Informatics, working on theory and methods for graph analysis. Her research focuses on methods for interpretable graph similarity assessment and theory for model-agnostic graph algorithms. As a recovering lawyer, she is also involved in a number of interdisciplinary data science projects aiming to measure the law. More details, including a full list of publications, can be found at here.

Corinna holds a B.Sc. in Computer Science from LMU Munich and an M.Sc. in Computer Science from Saarland University. She received a Ph.D. in Law from Bucerius Law School in Hamburg with a dissertation on "Legal Network Science", for which she was awarded the 2018 Bucerius Dissertation Award and the 2020 Otto Hahn Medal of the Max Planck Society. Before starting her Ph.D. in Computer Science, she joined the EDA group as a research assistant in 2019.

Corinna Coupette
PhD Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
Algorithms and Complexity
Max Planck Institute for Informatics
Graduate School for Computer Science
Saarland University

Saarland Informatics Campus
Building E 1.4
66123 Saarbrücken, Germany

Joscha Cüppers is a PhD student at the Saarland Graduate School of Computer Science and funded by CISPA Helmholtz Center for Information Security. He is working on pattern mining in temporal settings. Particular he is interested in developing methods to find interactions between time series as well as describing change, in an interpretable way, over time.

Joscha obtained his Bachelor of Science in Computer Science in 2016 from Ulm University and his Master of Science from Saarland University in 2019. He originally joined the EDA group for his master thesis, and started his PhD in 2020.

Joscha Cueppers
PhD Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
Graduate School for Computer Science
Saarland University

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5
Room 1.13
66123 Saarbrücken, Germany
joscha.cueppers@cispa.de

Sebastian Dalleiger is a PhD student of the Saarbrücken Graduate School for Computer Science, funded by the CISPA Helmholtz Center for Information Security. In addition he is affiliated with the Department for Databases and Information Systems at the Max Planck Institute for Informatics. His research interests include data mining and machine learning, and in particular information theoretic approaches to extracting useful models form data.

Sebastian obtained his Bachelor of Science in Mathematics from the University of Marburg in 2012, and his Master of Science in Computer Science from Saarland University in 2015. He joined the EDA group as a PhD student in September 2017.

Sebastian Dalleiger
PhD Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
Graduate School for Computer Science
Saarland University

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5
Room 1.18
66123 Saarbrücken, Germany
sebastian.dalleiger@cispa.de

Janis Kalofolias is a PhD student of the Saarbrücken Graduate School for Computer Science, funded by the CISPA Helmholtz Center for Information Security. In addition he is affiliated with the Department for Databases and Information Systems at the Max Planck Institute for Informatics. His research interests include many things, ranging from optimistic estimators for subgroup discovery, kernel-based methods for measuring similarities between graphs, to information theoretic methods for subjectively interesting structure from complex data.

Janis obtained his Bachelor of Science in 2011 from the University of Patras, Greece. In 2012 he joined Saarland University to pursue a Master of Science in Computer Science, and was a Research Assistant at the Max Planck Institute for Informatics. He joined the EDA group as a PhD student in November 2016.

Janis Kalofolias
PhD Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
Databases and Information Systems
Max Planck Institute for Informatics
Graduate School for Computer Science
Saarland University

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5
Room 1.13
66123 Saarbrücken, Germany
janis.kalofolias@cispa.de

David Constantin Kaltenpoth is a PhD student funded by the CISPA Helmholtz Center for Information Security, member of the International Max Planck Research School for Computer Science, and a student of the Saarland University Graduate School of Computer Science. His research focus is on information theoretic approaches to causal inference.

David obtained his Master of Science in Mathematics from the Ludwigs-Maximilian Universität München in 2016. He joined the EDA group in June 2016 for a Research Immersion lab, and started his PhD in October 2017.

David Kaltenpoth
PhD Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
Databases and Information Systems
Max Planck Institute for Informatics
Graduate School for Computer Science
Saarland University

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5
Room 1.14
66123 Saarbrücken, Germany
david.kaltenpoth@cispa.de

Sarah Mameche is a PhD student at the Saarland Graduate School of Computer Science and funded by CISPA Helmholtz Center for Information Security. She is working on the topic of exploratory causal analysis, including causal inference and the discovery of stable mechanisms.

Sarah did both her Bachelor and Master degree in Computer Science at Saarland University, joining the EDA group in 2020 to write her Master thesis with us on the topic of discovering invariant causal mechanisms between different environments, such as between the populations analyzed by different hospitals.

Sarah Mameche
PhD Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5
Room 1.14
66123 Saarbrücken, Germany

Osman Ali Mian is a PhD student in the EDA group. His research interests include causal inference, data mining, and machine learning.

Osman obtained his Bachelor's degree in 2015 from National University of Computer and Emerging Sciences (NUCES) in Karachi, Pakistan. In 2017 he joined Saarland University to pursue a Master of Science in Computer Science. He joined the EDA group in September 2018 as a Research Assistant, and finished his Master thesis titled 'Causal Discovery using MDL-based Regression' in July 2019.

Osman Ali Mian
PhD Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
Graduate School for Computer Science
Saarland University

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5
Room 1.14
66123 Saarbrücken, Germany
osman.mian@cispa.de

Boris is a PhD student in the EDA group, working on knowledge extraction from event logs. His research aims at developing methods to mine understandable models from complex event data. Application fields of his research include initial understanding of the control-flow in manufacturing and business processes, anomaly detection and bottleneck detection.

Boris obtained his Bachelor’s degree in Applied Computer Sciences at the University of Applied Sciences in Saarbrücken. In 2018, he completed his Master’s degree in Computer Science at Saarland University. After a year of practical work, he joined the EDA group in 2019. He is employed as a Data Scientist at AG der Dillinger Hüttenwerke and pursues to combine the best of research and industrial application.

Boris Wiegand
PhD Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
Graduate School for Computer Science
Saarland University
Data Scientist
Dillinger

AG der Dillinger Hüttenwerke
Werkstraße 1
66763 Dillingen, Germany
boris.wiegand@dillinger.biz

Muneeb Aadil pursues a Masters in Computer Science at Saarland University, and holds a scholarship from the International Max Planck Research School in Computer Science (IMPRS-CS). He is currently working on his Master thesis on the topic of learning causal invariants from temporal data.

Muneeb Aadil
Master Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
International Max Planck Research School
Max Planck Institute for Informatics

Saarland Informatics Campus
Building E 1.7 Room 3.12
66123 Saarbrücken, Germany

Ekaterina Arkhangelskaya is a student of the Saarland Graduate School for Computer Science. She did her Master thesis in the EDA group on the topic of disentangling neural networks, and is now a Research Assistant on the same topic.

Kate Arkhangelskaya
Research Assistant
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
Graduate School for Computer Science
Saarland University

Saarland Informatics Campus
Building E 1.7 Room 3.20
66123 Saarbrücken, Germany

Ravil Gasanov is currently an MS in Computer Science student at Saarland University. As part of his Master Thesis, he is investigating causal discovery in presence of hidden confounders — with a focus on information-theoretic approaches.

Ravil also holds a Bachelor's degree in Informatics and Control Systems from the Georgian Technical University (obtained in 2018), and is a DAAD alumnus (scholarship holder in 2020-2021).

Ravil Gasanov
Master Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5

66123 Saarbrücken, Germany

Martin Gassner is pursuing a Master of Science in Informatics at Saarland University. He is currently working with us on his Master Thesis.

Prior to his Masters in Saarbrücken, Martin did his BSc at the University of Maastricht, the Netherlands.

Martin Gassner
Master Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5

66123 Saarbrücken, Germany

Nisha George pursues a Masters in Computer Science at Saarland University. She is currently working on her Master thesis on the topic of learning robust neural networks.

Nisha George
Master Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5

66123 Saarbrücken, Germany

Saif Ali Khan is pursuing a Master of Science in Informatics at Saarland University. He is currently working with us on his Master Thesis, which will be on the topic of causal shapley values for better interpretability of machine learning models.

Before starting his Masters degree in Saarbrücken in 2019, he obtained his Bachelor's degree in 2018 from Ghulam Ishaq Khan Institute (GIKI) in Topi, Pakistan.

Saif Ali Khan
Master Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5

66123 Saarbrücken, Germany

Paul Krieger is pursuing a MSc in Computer Science at Saarland University, where he also obtained his BSc in Computer Science from. He is currently working on his Master thesis on the topic of mining temporally predictable sequential patterns.

Paul Krieger
Master Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5

66123 Saarbrücken, Germany

Marco Schuster is pursuing a Master of Science in Data Science and Artificial Intelligence at Saarland University. He is currently working with us on his Master Thesis on causal discovery in event logs.

Marco obtained his Bachelor's degree at the City University of Applied Sciences in Bremen in 2020. Subsequently, he started his Master's program at Saarland University and joined the EDA group in 2021. His Master Thesis is conducted in cooperation with Airbus.

Marco Schuster
Master Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5

66123 Saarbrücken, Germany

Jyotsna Singh is pursuing a Master of Science in Informatics at Saarland University. She is currently working with us as a Research Assistant, as well as on her Master Thesis. The topic of the latter is on explaining transformers.

Before starting her Masters in Saarbrücken in 2018, she finished her BSc in Electrical Engineering at IIT Kharagpur in 2017, interned at Nanyang University Singapore in 2016, and the Max Planck Institute for Informatics in 2017.

Jyotsna Singh
Master Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
Graduate School for Computer Science
Saarland University

Saarland Informatics Campus
Building E 1.7 Room 3.15
66123 Saarbrücken, Germany

Nils Walter pursues a M.Sc. degree in Computer Science at Saarland University. At CISPA he is a Research Assistant working on the topic of mining exceptional models from antimicrobial resistance data. Meanwhile he is writing his Master's thesis at DFKI on the topic solving I-POMDPs in the context of autonomous driving.

Before joining CISPA, Nils was Research Assistant at the Max Planck Institute for Informatics, where his research was focused on adversarial robustness of Convolutional Neural Networks.

Nils Walter
Research Assistant
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5

66123 Saarbrücken, Germany

Matthias Wilms is pursuing a Bachelor of Science in Informatics at Saarland University. For his Bachelor Thesis he is currently working with us on the topic of efficiently discovering top-k Markov blankets from data.

Matthias Wilms
Research Assistant
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

CISPA Helmholtz Center for Information Security
Stuhlsatzenhaus 5

66123 Saarbrücken, Germany

Sascha Xiaguang Xu is currently pursuing a Master of Science in Informatics at Saarland University. His research interests including data mining, machine learning, and causal inference. He is a research assistant in the EDA group, working on the topic of causal inference in the bivariate case.

Sascha Xu
Research Assistant
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security

Saarland Informatics Campus
Building E 1.7 Room 3.11
66123 Saarbrücken, Germany

Mohammad Yaseen Aftab pursues a Master degree in Computer Science at Saarland University, and holds a scholarship from the International Max Planck Research School in Computer Science. As a Research Assistant he is working on the discovery of anomalies in temporal data, and for his Master thesis he is exploring robustness in light of causal learning.

Mohammad Yaseen
Master Student
Exploratory Data Analysis
CISPA Helmholtz Center for Information Security
International Max Planck Research School
Max Planck Institute for Informatics

Saarland Informatics Campus
Building E 1.7 Room 3.12
66123 Saarbrücken, Germany

Previous Members

Dr. Jonas Fischer
Dr. Jonas Fischer
PhD Student
Abraham Ezema
Abraham Ezema
Research Assistant
Dr. Panagiotis Mandros
Dr. Panagiotis Mandros
Post Doc
Tim Bruxmeier
Tim Bruxmeier
Master Student
Frauke Hinrichs
Frauke Hinrichs
Master Student
Dr. Michael Kamp
Dr. Michael Kamp
Post Doc
Dr. Alexander Marx
Dr. Alexander Marx
Post Doc
Jana Hess
Jana Hess
Master Student
Edith Heiter
Edith Heiter
Master Student
Anna Oláh
Anna Oláh
Master Student
Sandra Sukarieh
Sandra Sukarieh
Master Student
Dr. Kailash Budhathoki
Dr. Kailash Budhathoki
PhD Student
Khánh Hiệp Trần
Khánh Hiệp Trần
Research Assistant
Divyam Saran
Divyam Saran
Master Student
Grégoire Pacreau
Grégoire Pacreau
Research Assistant
Simina Ana Cotop
Simina Ana Cotop
Master Student
Magnus Halbe
Magnus Halbe
Master Student
Dr. Mario Boley
Dr. Mario Boley
Post Doc
Maha Aburahma
Maha Aburahma
Master Student
Iva Farag-Baykova
Iva Farag-Baykova
Master Student
Yuliia Brendel
Yuliia Brendel
Master Student
Maike Eissfeller
Maike Eissfeller
Master Student
Tatiana Dembelova
Tatiana Dembelova
Master Student
Henrik Jilke
Henrik Jilke
Master Student
Robin Burghartz
Robin Burghartz
Master Student
Benjamin Hättasch
Benjamin Hättasch
Master Student
Patrick Ferber
Patrick Ferber
Research Assistant
Michael Hedderich
Michael Hedderich
Research Assistant
Amir Baradaran
Amir Baradaran
Master Student
Dr. Apratim Bhattacharyya
Dr. Apratim Bhattacharyya
Master Student
Shweta Mahajan
Shweta Mahajan
Research Assistant
Beata Wójciak
Beata Wójciak
Master Student
Margarita Salyaeva
Margarita Salyaeva
Master Student
Tobias Heinen
Tobias Heinen
Research Assistant
Dr. Kathrin Grosse
Dr. Kathrin Grosse
Master Student
Manan Gandhi
Manan Gandhi
Master Student
Dr. Hoang-Vu Nguyen
Dr. Hoang-Vu Nguyen
Post Doc
Andrea Hornakova
Andrea Hornakova
Research Assistant
Cristian Caloian
Cristian Caloian
Research Assistant
Dr. Stefan Neumann
Dr. Stefan Neumann
Research Assistant
Dr. Polina Rozenshtein
Dr. Polina Rozenshtein
Research Assistant
David Ziegler
David Ziegler
Research Assistant
Eustace Ebhotemhen
Eustace Ebhotemhen
Research Assistant
Sinan Bozca
Sinan Bozca
Research Assistant
Dr. Shilpa Garg
Dr. Shilpa Garg
Research Assistant
Dr. Michael Wessely
Dr. Michael Wessely
Research Assistant