dr. ir. Axel Faes

Postdoctoral Researcher · University of TwenteResearch Affiliate · UHasselt

References

Liesbet M. Peeters
liesbet.peeters[at]uhasselt.be · Associate Professor (Postdoc advisor) Biomedical Data Sciences
Marc Van Hulle
marc.vanhulle[at]kuleuven.be · Full Professor (PhD advisor) Laboratory for Neuro- and Psychophysiology
Yves Moreau
yves.moreau[at]kuleuven.be · Full Professor (Collaborator)

Work & Research Experience

January 2026 - Current
Postdoctoral Researcher: Foundation Models & Multi-Modal Federated Learning for Precision Medicine and Liver Cancer Detection
University of Twente / Medisch Spectrum Twente
Developing advanced deep learning and foundation models integrating longitudinal MRI data, multi-omics profiles, and clinical variables for early detection and risk prediction of hepatocellular carcinoma (HCC). Building explainable AI (XAI) frameworks that link imaging features and molecular markers to clinically meaningful outcomes in precision oncology within the AI-HCC ZonMw project.
January 2024 - January 2026 (Research Affiliate from 2026)
Postdoctoral Researcher: Federated Learning in Healthcare & Real-World Evidence
UHasselt
Scientific Coordinator of the Flanders AI Research Program Use Case Real World Evidence, leading multi-institutional research on privacy-preserving healthcare analytics. As Technical Machine Learning Lead of the Biomedical Data Sciences Group, developed federated learning frameworks enabling collaborative clinical research across Belgian healthcare institutions without sharing sensitive patient data. Research encompasses federated tensor regression for longitudinal health data, distributed learning architectures for heterogeneous clinical datasets, and translation of federated AI methods into practical healthcare applications.
May 2023 - January 2024
Postdoctoral Researcher: Deep Learning & Tensor Regression for Sign Language Alphabet Decoding via Brain-Computer Interfaces
KU Leuven
Developed advanced machine learning methods for decoding sign language alphabet gestures from high-density intracranial brain activity (ECoG). Combined deep learning architectures with tensor regression models to capture complex spatiotemporal patterns in neural signals associated with linguistic motor control. Technical contributions included implementing block-term tensor decomposition for multi-dimensional neural data and exploring cross-subject generalization for robust BCI performance. The research advances both fundamental understanding of neural encoding of sign language and practical assistive communication technology. Conducted at the Laboratory for Neuro- and Psychophysiology under supervision of Prof. Marc Van Hulle, extending previous doctoral research in motor decoding to linguistic applications.
2022 - 2024
Data Science Consultant
Flanders BCI
Provided consultancy for physical experiments using Synamps RT and Neuvo EEG Systems. Supported the data analysis for hybrid BCI with new analytical EEG modeling techniques & signal detection- and classification algorithms. Infer emotion from EEG signals using machine learning techniques. Usage of ECoG signals from semi-invasive recording for imagined movement detection and language processing.
Dec. 2022 - Jan. 2023
Research Stay Idrogenet Srl, Gloreha: Robotic Rehabilitation
Lumezzane, Italy
Develop custom software for the control of the Gloreha robotic rehabilitation device, Specifically the R-TOUCH PRO Sinfonia, a custom-built robotic exoskeleton for hand rehabilitation.
Sep. 2018 - May 2023
PhD Researcher in Computational Neuroscience
KU Leuven
Cognitive and Molecular Neuroscience PhD Thesis: Finger Movement Decoding: From Source-Localisation to Tensor Regression Modelling
Jul. 2016 - Sep. 2016
Web Performance Research Internship
UHasselt
I worked on the iMinds PRO-FLOW project @ Expertise centre for Digital Media (EDM) focus on the difference between the http versions (http1.1, https, http2).
Aug. 2015 - Sep. 2015
Summer Research Internship Physical Computing
UHasselt
Interfacing between human entity, a drone and virtual objects @ Expertise centre for Digital Media (EDM). (C++, Optitrack motion capture, custom built drone)

Teaching & Academic Activities

Bioinformatics (3740) Coordinating lecturer
UHasselt · Sept. 2025 - Sept. 2026
BKO (Basic Teaching Qualification) track - Teacher Professionalization
UHasselt · 2025
Data Science in Healthcare (4747) Lecturer (teaching team member)
UHasselt · Sept. 2025 - Dec. 2025
Advanced Topics in Data Science (4569 & 4585) Lecturer Federted Learning (teaching team member)
UHasselt · June 2024 - Sept. 2025
Bioinformatics (3740) Coordinating lecturer
UHasselt · Sept. 2024 - Sept. 2025
Guest Associate Editor Use of Big Data and Artificial Intelligence in Multiple Sclerosis
Frontiers in Immunology · 2024 - 2025
VLAIO Evaluator for BAEKELAND SPIN OFF MANDATES
VLAIO · 2025
Student Research Competition Judge (International Conference on Functional Programming)
ICFP · 2024
Brain-Computer Interfacing (B-KUL-H08M0A) Guest Lecturer
KU Leuven · 2022-2025

Students

Brecht Heeren
Federated Machine Learning for Health Data · Master of Science in Computer Science (2025-2026)
Denzell Mgbokwere
Optimization and Type Checking in Single-Pass Compilers - a Case Study with the Wren Programming Language · Master of Science in Computer Science (2025-2026)
Robert Rysskin
Redesign of Wren Bytecode - Towards More Efficient Execution and Memory Usage · Master of Science in Computer Science (2025-2026)
Anh Phuong DO
Individual Reference Intervals for Clinical Event Prediction · Doctoral Program in Sciences, Statistics (co-supervisor, 2024 - 2025)
Matteo Ramina
Estimating Household Wealth in Guyana - Remote Sensing and Convolutional Neural Network Approach · Master Statistics & Data Science (2024-2025)
Mohsen Soleimanisemsani
AI for time series imputation · Master Statistics & Data Science (2024-2025)
Meseret Assefa Kerga
Predicting Cirrhosis Patient Survival Using Machine Learning - A Data-Driven Approach · Master Statistics & Data Science (2024-2025)
Dongho Chun
Clustering with Cardiovascular Health Data · Master of Science in Computer Science (2024-2025)
Dries Cornelissen
BTTR for arrhythmia detection/prediction on sinus rhythms · Master of Science in Computer Science (2024-2025)
Ward Ceyssens
Cross Subject training for finger movement decoding with high-density ECoG · Master of Science in Computer Science (2024-2025)
Qiang Sun
Hand exoskeleton dexterity achieved by shared control with a semi-invasive brain-computer interface · Doctoral Program in Biomedical Sciences (daily supervision 2022-2023)
Eva Calvo Merino
Restoring finger dexterity with an exoskeleton controlled by human intracranial recordings · Doctoral Program in Biomedical Sciences (daily supervision 2022-2023)
Aurélie de Borman
Investigating the effect of Source Mixing on Directed Connectivity estimated between Simulated Reconstructed EEG Sources · Internship Student 2021
Diogo Sousa Morais
Estimating the effectiveness of source localized EEG for BCIs · Internship Student 2021
Guilherme de Borras Silva
Cluster Permutation Analysis of N-Back related EEG-ERP Data · Internship Student 2021
Iris Vantieghem
Using Neural Networks to derive Directed Connectivity between Reconstructed EEG Sources · Master of Science in Artificial Intelligence (2020-2021)
Didier Quintius
Neural Network Approach to the Inverse Problem · Master of Science in Artificial Intelligence (2020-2021)

Talks, presentations and other media

2026
Modality-Specific Encoding with a Shared Backbone for Early HCC Prediction from Multi-Modal Liver MRI
4th XAI-NL Meet-Up
2025
Optimizing Federated Block-Term Tensor Regression - Strategy Comparisons and Applications
Symposium on Federated Learning and Intelligent Computing Systems (FLICS)
2025
Federated Learning for Healthcare - From Brain-Computer Interfaces to Disease Prediction
IEEE FLTA (International Conference on Federated Learning Technologies and Applications)
2025
OHDSI Europe Symposium 2025
OHDSI Europe Symposium
2025
Guest Lecture "Federated Finger movement decoding - brain-computer interfacing"
KULeuven
2024
Use Case - Real-World Evidence
Flanders Artificial Intelligence Research Program (FAIR) Research Day
2024
FAIR Use Case Real World Evidence Kick-off Event
Flanders Artificial Intelligence Research Program (FAIR)
2023
Decoding finger movements from invasive recordings in human motor cortex
Mindseed event Leuven, NeuroTech Leuven
2023
Guest Lecture "Finger movement decoding - brain-computer interfacing"
KULeuven
2022
Coordinated Finger Movements Predicted from Intracranial Brain Activity
International Congress Humanities vs Sciences & the Knowledge Accelerating in Modern World: Parallels an Interaction,
2022
BCI demo - Advanced Engineering, Antwerp Expo
AI Flanders, Flanders Industry 4.0
2022
Guest Lecture "Decoding single and coordinated finger actions from intracranial brain activity"
KULeuven
2022
Finger abduction trajectory prediction from high-density ECoG
Leuven AI Scientific Workshop
2021
Decoding single and coordinated finger actions from intracranial brain activity.
XIV World Scientific Congress - SCIENCE FOR PEACE Modern Science, Global and Regional Theory and Practice
2021
Guest Lecture "Finger Movement Decoding - From Source-Localisation to Tensor Regression Modelling"
KULeuven
2021
Reconstructing single finger trajectories from intracranial brain activity
III International Conference "Volga Neuroscience Meeting 2021"
Leading scientists from all over the world will meet together to discuss topical problems in the field of neuroscience and artificial intelligence. The conference is organized by Lobachevsky State University of Nizhny Novgorod (UNN).
2021
BCI demo - Day of Science
Technopolis (canceled due to the COVID-19 situation)
2019
Presentation "'MINDSPELLER' Medical Research Project on Brain Computer Interfaces" and concert (with Tigran Maytesian and his Mind Speller Chamber Orchestra)
Cathedral of St. Michael and St. Gudula, Brussels
2017
Honours student Axel Faes wins bronze medal in ACM SIGPLAN
KU Leuven, Department of Computer Science
2017
Student Axel Faes wins bronze medal in the ACM SIGPLAN Student Research Competition in ICFP conference
KU Leuven, Department of Computer Science, DTAI
2016
Purpose-Centric Appropriation of Everyday Objects as Game Controllers
ACM SIGCHI

Educational background

Sep. 2022 - May 2024
Flemish Sign Language course
Flemish Sign Language Centre
Graduates are able to engage in day-to-day conversations with deaf and hard-of-hearing individuals.
Sep. 2018 - May 2023
Doctoral Programme in Biomedical Science (PhD) in Computational Neuroscience
KU Leuven
Cognitive and Molecular Neuroscience PhD Thesis: Finger Movement Decoding: From Source-Localisation to Tensor Regression Modelling
Sep. 2017 - Jul. 2019
Advanced Master of Science in Engineering (M.Sc.) in Artificial Intelligence
KU Leuven
Engineering and Computer Science (76% - Cum Laude) Thesis: An Information Theoretical Approach to EEG Source-Reconstructed Connectivity (on Github)
Sep. 2016 - Oct. 2018
Honours programme of the Faculty of Engineering Science (Research Track)
KU Leuven
Research Assistant: design of type-&-effect system for Eff based on row polymorphism Research Assistent: efficient compilation of algebraic effect handlers (in Eff)
Sep. 2016 - Sep. 2018
Master of Science in Engineering (M.Sc.) in Computer Science (Burgerlijk Ingenieur - ir.)
KU Leuven
Artificial Intelligence & Theoretical Computer Science (76% - Cum Laude) Thesis: Algebraic Subtyping for Algebraic Effects and Handlers (on Github)
Jul. 2015 - Aug. 2015
Business Summer School: United in Manchester (0739)
The University of Manchester
International Business
Sep. 2013 - Jul. 2016
Bachelor of Science (B.Sc.) in Computer Science
UHasselt
Physics and General courses (79% - Magna Cum Laude) Thesis: Machine learning techniques for flow-based network intrusion detection systems (on Github)

Grants & (open-source) Projects

2024 - Current
Use Case Real World Evidence - Flanders AI Research Program
Role: Scientific coordinator (UHasselt) and AI Researcher Team: approx. 10 researchers across 4 institutions
2023 - 2025
ELIXIR Belgium - Roadmap 2023-2025
Role: Consortium partner (UHasselt), focusing on health data re-use and federated analyses Collaborations: KU Leuven (Yves Moreau), University of Antwerp (Geert Vandeweyer), VIB (Frederik Coppens) Context: ELIXIR Belgium is part of ELIXIR Europe, an ESFRI initiative funded by the European Commission and national agencies
2025 - Current
Federated Learning Kit (FLkit)
FLkit is designed to help life scientists apply federated learning in their research. It offers guidance, techniques, and tools for working with decentralized and sensitive data, enabling privacy-preserving collaboration and deeper insights without sharing raw data. The project is in its early stages and open to contributors. The long-term goal is to make FLkit community-driven, sustained, and governed by researchers and practitioners who want to advance federated learning for life sciences.
Jan. 2015 - Current
Cardinal: Educational and Research platform for MSc theses in PL/compilers
Cardinal is a C++20 reimplementation of the Wren VM, designed for clarity, research, and education. It provides a small, well-documented virtual machine and runtime for exploring compilers, concurrency (fibers), and language embedding. The project serves as a platform for student theses and for prototyping new programming language ideas.
2022 - Current
Open Source Python Package - Block-Term Tensor Regression (BTTR)
The open-source BTTR implementation provides researchers and practitioners with accessible, reproducible tools for tensor-based regression in neuroscience and related domains. It is actively developed and documented to support experimentation, education, and further research.
2025 - Current
Wisconsin Breast Cancer Dataset Research Tutorial for Federated Learning
This repository serves as a step-by-step tutorial for running federated learning studies with the FL4E framework. Using the Wisconsin Breast Cancer dataset as an example, it guides researchers and students through the full workflow. Clear documentation and markdown guides explain each step, making it easier for newcomers to understand and apply federated learning in practice.
Aug. 2016 - Current
ICAL parser for KU Leuven schedules
A Node.js application to create an iCalendar file for courses at KU Leuven. (>1000 active users)
Sep. 2015 - Dec. 2015
Household Survival: Immersive Room-Sized Gaming Using Everyday Objects as Weapons (Unity, Optitrack Motion Capture)
Developed a room-scale AR game using everyday objects as controllers (broom, fan, vacuum, mousetrap). Demonstrated immersive physical-virtual interactions. Still used in university courses as a teaching example.

Honors & Awards

Selected for EFSA Framework Contract
European Food Safety Authority · Europe
FWO Fundamental Research Grant
FWO · Belgium
Finalist
Cyber Security Challenge 2018 · Brussels, Belgium
3rd place
ICFP 2017 Student Research Competition · Oxford, UK
Bachelor Award
in Computer Science · UHasselt, Belgium
3rd place
ACM CHI 2016 Student Design Competition · San Jose, CA, USA
2nd place
BeGDC (Belgian Game Development Championship) · Brussels, Belgium
IELTS
Academic Module (8.0/9.0) · Brussels, Belgium

Professional Development Activities

2026
Twente Health School (summer school)
University of Twente
Interdisciplinary health-research summer school at the University of Twente.
Sept. 2015 - 2024
Mathematics & Natural Sciences Tutor
Freelance
Supporting high school and university students in mastering mathematics (and other natural sciences) through personalized tutoring
Mar. 2018 - 2024
Coach
DjangoGirls
Inspire women to fall in love with programming (Python, Django workshops)
Sep. 2014 - 2025
Coach
CoderDojo (UHasselt, PXL)
Teach children programming (Scratch, Python, Minecraft and Lego mindstorm).
Sep. 2017 - Sep. 2018
Student Representative
KU Leuven
POC (Education Committee) of Master Computer Science Engineering, POC (Education Committee) of Advanced Master Artificial Intelligence, Member of Departmental council of Computer Science, Department board of Computer Science and Faculty council of Engineering Science
Mar. 2015 - Aug. 2016
Student Council Member
StuRa UHasselt
Member of Board of Education, Faculty Council. Board of Student Facilities, Diversity Commission, Temporary representative in VVS (Flemish Union of Students)
Sep. 2013 - Jul. 2016
Student Representative
UHasselt
Representing students interests in a Computer Science education context. Representing Computer Science education for high school students