Statistical Learning Research Group (Sailing)


© Guillaume Perret, Les Ponts-de-Martel, November 2019


Professor, PhD degree in Computer and Communication Sciences from EPFL. Stephan Robert was born in Neuchâtel, Switzerland. He graduated as an engineer (BSc) in microengineering with first honors. He received the ing. dipl. degree (MSc) in electrical engineering (Maillefer Award) and the « Docteur ès Sciences » degree (PhD) with Prof. Jean-Yves Le Boudec, both from EPFL, Lausanne (Switzerland). From 1996 to 1998, he has been a Post-doctoral Research Fellow at UC Berkeley with Prof. Jean Walrand. He worked as a researcher, consultant, engineer and projects manager for many companies during 8 years: Swisscom (Bern), Huber & Suhner (Herisau), ABB (Turgi), GDA (Bern) and Cisco Systems (San Jose, California). Since 2001, he has been a Professor at the University of Applied Sciences (HES-SO), Yverdon. On the political side he has been a « député » (deputy) at the « Grand Conseil Neuchâtelois« (2005-2009). During his Master’s thesis he developed the first prototype of an SSFIP antenna which is manufactured by Huber+Suhner and widely spread over our country. During his PhD, he discovered new models of Markov chains exhibiting self-similarities over a finite timescales. At Swisscom, he was the project leader of « Mobile Unlimited » (which won the highest application distinction, the GSM award in Cannes, March 2005) during the initiation phase. He was also involved in a number of EU projects for traffic engineering, mobility and wireless communications (UWB) aspects. Now his research interests are on artificial intelligence, machine learning, fraud detection, prediction, scheduling, smart caching and storage of spatio-temporal data. He also served as an editor for IEEE Communications Surveys and Tutorials and as a TPC member of many conferences. During seven consecutive years he organized a summer university with SJSU, PES-IT, CSULBASU and now with the competitive Seoul National University (SNU).


PhD Student

Félicien Hêche

Félicien holds a MSc in mathematics with a minor in computer science from the University of Neuchâtel. Passionate about applied mathematics, machine learning, deep learning, and data science, he wrote his master thesis on persistent homology for topological data analysis, an approach which has been developed to analyze complex datasets. Persistent homology is a method for computing topological features of a space at different spatial resolutions. More persistent features are detected over a wide range of spatial scales and are deemed more likely to represent true features of the underlying space rather than artifacts of sampling, noise, or particular choice of parameters. To find the persistent homology of a space, the space must first be represented as a simplicial complex. A distance function on the underlying space corresponds to a filtration of the simplicial complex, that is a nested sequence of increasing subsets. The mathematical tools used in persistent homology mostly come from commutative algebra, combinatorics, and probability theory. Topological data analysis has a wide range of applications, among which image compression, cancer research, and shape or pattern recognition. Currently, he is involved in an exciting European research project in collaboration with the CHUV (Centre Hospitalier Universitaire Vaudois), the University of Franche Comté, the CHU (Centre Hospitalier Universitaire) Besançon, TechWan ( and Maincare (, and he tries to find optimal solutions using deep learning to guide and involve the most appropriate vector (helicopter, ambulance) in the face of an emergency, accident, or disaster.

Research staff


Dr. Efstratios RAPPOS

Senior Research Data Scientist, Research Associate (Adjoint Scientifique), PhD in Operational Research, Imperial College, UK. MSc in finance University of London. BA and MA in mathematics, University of Cambridge. Dr. Efstratios Rappos (Stratos) is a postdoc at HEIG-VD. He has obtained a Ph.D. in combinatorial optimization / operations research from Imperial College London, a BA and MA in Mathematics from the University of Cambridge and an MSc in Finance from the University of London. He got the Bronze medal at the International Mathematical Olympiads (IMO, 1995). His research interests include mathematical modeling, integer programming, network design, combinatorial optimization, algorithm design and large-scale dataset manipulation. He has worked as a scientific team leader for the UK Department for Work and Pensions (DWP) developing mathematical models for large-scale data mining, cleaning and analysis of social security data, and has also collaborated in several academic EU projects. Recently he won the second place in the International Timetabling competition (DIPLOMA).


L’attribut alt de cette image est vide, son nom de fichier est Screen-Shot-2019-11-26-at-21.47.42-1.png. Dr. Regis HOUSSOU 
Research Data Scientist, Ph.D in Financial Mathematics, University of Neuchatel, Switzerland. Master of Advanced Studies (MAS) in Quantitative Finance, ETH Zurich, Switzerland. BSc and MSC in Applied Mathematics, University of Neuchatel. Dr. Regis Houssou obtained his Ph.D. in Financial Mathematics. During his Ph.D, he developed and implemented new quantitative approaches for the pricing of defaultable bonds and credit derivatives. His research interests include Credit Risk Models, Option pricing, Stochastic Processes, Partial Differential Equations, Machine Learning and Statistical Analysis. Dr. Regis Houssou has several years of experience working; he has worked as Quantitative Analyst at Fundo SA in Lausanne, as Statistician at Swiss Institute of Bioinformatics (SIB) in Lausanne and as Data Scientist at the United Nations Migration Agency (IOM) in Geneva. He is currently a Data Scientist at HEIG-Vd, working in collaboration with NetGuardians.



Research Data Scientist. Cezar Harabula graduated from the French École Polytechnique (ingénieur) and holds a MSc from Eurecom Sophia Antipolis in computer science. He is a software engineer who worked in Silicon Valley and Paris (at Murex or in Astek’s incubator), built his startup, and later obtained a PhD in quantum devices from the University of Basel. The noise-based stochastical analyses he elaborated during his doctoral studies offered precise descriptions of novel electronic transport phenomena in quantum dots. After a deep-learning intermezzo at ETHZ, he integrated the fraud detection project we are running with NetGuardians.


L’attribut alt de cette image est vide, son nom de fichier est 026327dc-79b9-4bea-b5ed-24469bebd6d6. Antoine FRIANT, HES Engineer

Data Scientist. HEIG-Vd (BSc). He joined HEIG-VD in 2019 as a full time Machine Learning Engineer with the goal of optimizing logistics in hospitals thanks to deep learning models. Antoine holds a Bachelor’s degree in Software Engineering from HEIG-VD, where he worked on his Bachelor’s thesis : using machine learning to make population density maps from nighttime satellite imagery.


Master Students and Interns



 Master student in Scientific Computing and Mathematics of Information (MSc) at the University of Strasbourg (Spring 2020). This degree is based on PDEs, control theory, signal processing and deep learning. I’ve graduated from the University of Strasbourg in Pure Mathematics (BSc) in 2018. Since October 2019, I am working on a project with Electricité de France R&D PERICLES to design a deep learning model to solve fluid dynamics problems. (Navier-Stokes PDEs). From May to August 2019, I was an intern at Cross Valorem Luxembourg and I worked on financial models. I also worked on an NLP problem for Electricité de Strasbourg in 2019. My internship at the HEIG-VD starting in January 2020 will be based on setting up an AI-based algorithm for banking fraud detection. »



Master student in Mathematics, IAESTE Intern, Gdansk University (Spring 2020).  graduated in the field of Financial Mathematics at Gdansk University of Technology in July 2017 and since then have been working for PwC Poland, Financial Crime Unit. During my first year at the company I was working in the operations department as an AML Analyst. I decided to take one year off before my master degree because of the opportunity to work for such a well-known company straight after my bachelor studies. A few months later, I took part in a project at the University San Francisco de Quito in Ecuador. During my internship in Ecuador I was working on an optimization model for a company delivering liquids. When I came back from Ecuador I changed my career path to join the Technology Stream where I took on the role as a Data Analyst. Since October 2018 I have been studying Big Data at the University of Gdansk. During the summer of 2019 I was enrolled at the University of Macau in Macau, China, Department of Computer & information Science where I was involved in a project based on complex functions visualization using the domain coloring method.

Associated, Former Members and Visitors

LanpengDr. Lanpeng JI

Now Assistant Professor at the university of Leeds, UK. PhD in Mathematics, University of Lausanne. MSc in Probability Theory, Nankai University, China. BSc in Information and Computer Science, Agriculture University of Hebei, China. Dr. Ji received an award from the Fondation Nicolas and Helena Porphyrogenis (Lausanne) 2014 for his excellent doctoral thesis entitled « Ruin and related quantities in some advanced insurrance risk models ».  His research interests include stochastic processes, probability theory and machine learning.



Dr. Daejin CHOI

Now at GeorgiaTech, USA. Ph.D, Seoul National University, Korea. There are two his research topics: (Internet) Data Science, and Future Internet Technologies. For the data scientist, he focuses on the users’ behaivoral characteristics and content propagation, which published several papers in ACM SIGMETRICS, WWW, and ACM COSN. In the master period, he designed and implemented a Content-Centric Network (CCN) router, which efficiently delivers contents to clients by removing redundant packets in Internet. Currently, he focuses on understanding how users consume online contents and various type of applications based on user consumption patterns. See more details in here (


Dr. Alexander FELDMAN

Now at PARC, Palo Alto, California, USA. MSc and PhD in Computer Science, TU Delft, The Netherlands. Dr. Alexander Feldman (Alex) is a visiting scientist at HEIG-VD (used to be a post-doc in the same institution). He has obtained his Ph.D. (cum laude) in computer science/artificial intelligence and M.Sc. (cum laude) in parallel and distributed systems from the Delft University of Technology, The Netherlands. He is a visiting researcher at the Delft University of Technology and PARC (former Xerox PARC). He has published in leading conference proceedings and international journals covering topics in artificial intelligence, model-based diagnosis, and engineering. In cooperation with NASA Ames Research Center and PARC, Alexander Feldman has co-organized the First and Second International Diagnostic Competitions. Alexander Feldman’s interest cover wide spectrum including topics such as automated problem solving, software and hardware design, design of diagnostic space applications, digital signal processing, and localization. Prior to the start of his academic career Feldman has several years of experience working for the Market Risk Management of ING Bank, The Netherlands and Zend Technologies, Israel.


Now at Calyps. He graduated from the Blaise-Pascal University (currently Université d’Auvergne) in Clermont-Ferrand, France. He obtained his PhD degree in Theoretical Physics in 2012 which was awarded the best young researcher prize for his work on light-matter interaction in semiconductor nanostructures. Early 2013, he joined the group of Professor Vincenzo Savona at EPFL and worked as a Postoctoral Researcher/Senior Scientist for 5 years in the field of Quantum Photonics. He used to be a Ra&D Researcher in the group of Professor Stephan Robert at HEIG-VD. He used to be in charge of the Artificial Intelligence research effort in building predictive models for healthcare logistics in collaboration with Calyps Switzerland. He is now working at Calyps.


Former Master Students and Interns


L’attribut alt de cette image est vide, son nom de fichier est Giulia-small-2.png. Giulia MOSCHINI

Computer Security, IAESTE Intern (Fall 2019-20). I’ve graduated from Glasgow Caledonian University in Digital Security, Forensics and Ethical Hacking (BEng) with a first-class honour. While undertaking my studies, I became familiar with the various aspects that make up communications and their inherent threats. I am very interested in machine learning and in its application in the security landscape and I was glad to research this aspect as I was carrying out my thesis about the detection of malicious emails. I am currently an intern at HEIG-VD through an IAESTE placement. 



Computer Science, Spring 2020. A final year B. Tech Computer Science Engineering student at Bennett University, INDIA.  Bennett University is situated near New Delhi, the capital city of India. He has keen interest in Data Science and Machine Learning.  He is also interested in graphics and Logo design.



Physics, EPFL (Summer 2019). He is mainly interested in analysis, numerical methods and machine learning. 


Prof. Dr. Navdeep Sahni

Now Professor at Stanford University.