Explanatory Data Analysis

Useful insights from data

Dr. Matthijs van Leeuwen, group leader
Dr. Matthijs van Leeuwen
Group leader
Assistant professor

The EDA group at LIACS, headed by dr. Matthijs van Leeuwen, develops algorithms and theory that enable domain experts to explain data by finding interpretable patterns and models.

Our main focus is on exploratory data analysis, often in the form of discovering novel and unexpected patterns that may give useful insights. Even when predictive modelling is the final goal, it is essential to first get a solid grasp on the data. Regardless of the analysis task, we aim for algorithms that are accurate, explainable, and provide interpretable results.

Our research builds on the state of the art in information theoretic data mining (e.g., using the minimum description length (MDL) and maximum entropy principles), statistical pattern mining, and interactive data exploration and analytics. More broadly speaking, our research can be situated in the fields of data mining, machine learning, data science, and artificial intelligence (AI).

We mostly work on multidisciplinary data science projects, as we strongly believe that this leads to interesting, fundamental data mining problems for which the solutions we propose have the potential to positively impact society.

News and updates

New PhD students

15 October 2018

Daniela Gawehns and Marieke Vinkenoog have joined the EDA group as PhD students. Welcome!


20 September 2018

Sepinoud Azimi is visiting the EDA group for one and a half month. Welcome!

Four theses defended!

19 September 2018

Lincen, Ruben, Stephan, and Valérie have all successfully defended thesis. Congratulations to all!

New group members

11 September 2018

Juliëtte Meeuwsen and Teddy Etoeharnowo have joined the EDA group as MSc students working on their master theses. Welcome!

Start of '18-'19

3 September 2018

Welcome to all new students! The second edition of our Master's course on Information Theoretic Data Mining will start next Thursday.


26 March 2018

Clément Gautrais is visiting the EDA group for one week. Welcome!

EDA is part of

Leiden Institute of Advanced Computer Science

Data Science Research Programme

Leiden Centre of Data Science

Leiden University
Leiden, the Netherlands