Comme par hasART

Un évènement insolite organisé à l’occasion de la Journée Européenne de la Statistique.

Au programme:

– Kick-off de la 1ère édition de la European Statistics Competition au Luxembourg.

– Conférence grand public sur l’art du hasard par Yvik Swan, professeur de Mathématique à l’Université libre de Bruxelles, président de la Belgian Mathematical Society.

– Inauguration d’« Exploratis », une nouvelle station expérimentale au Science Center basé sur le célèbre livre interactif « Mathema » de Hugo Parlier et Paul Turner.

Informations pratiques

Date: 23 Octobre 2021
Time: 15:00-18:00
Place: Luxembourg Science Center (1, rue John E. Dolibois, Differdange)
Fee: gratuit

Doing Some Good with Machine Learning

It is a pleasure to invite you to our third LSS Presentation of 2021, to take place on June 4, from 8pm – 9:30 pm via Microsoft Teams.

The talk will be given by Prof. Lester Mackey. Lester Mackey is a statistical machine learning researcher at Microsoft Research New England and an adjunct professor at Stanford University. He received his Ph.D. in Computer Science (2012) and my M.A. in Statistics (2011) from UC Berkeley and my B.S.E. in Computer Science (2007) from Princeton University. Before joining Microsoft, he spent three years as an assistant professor of Statistics and, by courtesy, Computer Science at Stanford and one as a Simons Math+X postdoctoral fellow, working with Emmanuel Candes. His Ph.D. advisor was Mike Jordan, and his undergraduate research advisors were Maria Klawe and David Walker. He got his first taste of research at the Research Science Institute and learned to think deeply of simple things at the Ross Program


This is the story of my assorted attempts to do some good with machine learning. Through its telling, I’ll highlight several models of organizing social good efforts, describe half a dozen social good problems that would benefit from our community’s attention, and present both resources and challenges for those looking to do some good with ML.

Practical information

Date: 4 June 2021
Time: 20:00-21:30
Place: Microsoft Teams
Fee: Free
Registration: please register by sending an email to Michela Bia (

Vaccine trials in the age of COVID-19: issues and inferences

It is a pleasure to invite you to our second LSS Presentation of 2021, to take place on May 18, from 8pm – 9:30 pm via Microsoft Teams.

The talk will be given by Prof. Stephen Senn. Stephen Senn is currently providing consulting for CCMS since he retired in April 2018 from his position of CCMS head. He joined LIH in 2011 and was previously a Professor in Statistics at the University of Glasgow (2003) and University College London (1995-2003). In addition to working as an academic he has also worked for the pharmaceutical industry in Switzerland and the National Health Service in England. He is the author of three books, Cross-over Trials in Clinical Research (1993 & 2002), Statistical Issues in Drug Development (1997, 2007) and Dicing with Death (2003). His expertise is in statistical methods for drug development and statistical inference. He consults extensively for the pharmaceutical industry.


The response to the COVID-19 crisis by various vaccine developers has been extraordinary, both in terms of speed of response and the delivered efficacy of the vaccines. It has also raised some fascinating issues of design, analysis and interpretation. I shall consider some of these issues, taking as my example, five vaccines: Pfizer/BioNTech, AstraZeneca/Oxford, Moderna, Novavax, and J&J Janssen but concentrating mainly on the first two. Among matters covered will be concurrent control, efficient design, issues of measurement raised by two-shot vaccines and implications for roll-out, and the surprising effectiveness of simple analyses. Differences between the five development programmes as they affect statistics will be covered but some essential similarities will also be discussed.

Practical information

Date: 18 May 2021
Time: 20:00-21:30
Place: Microsoft Teams
Fee: Free
Registration: please register by sending an email to Michela Bia (

Dynamical modelling of COVID-19 pandemic and its path towards herd-immunity

It is my pleasure to invite you to our first LSS Presentation of 2021, to take place on March 4, from 8pm – 9pm via Microsoft Teams . The talk will be given by Françoise Kemp from the University of Luxembourg. She got a Master in Applied Mathematics from the University of Trier in 2018, and is now doing a PhD in Systems Biomedicine at the Luxembourg Center for Systems Biomedicine, and is Member of the COVID-19 Taskforce Research Luxembourg


Against the current COVID-19 pandemic, non-pharmaceutical interventions have been widely applied; vaccines are also becoming available. Now, an urgent question is how the interplay between vaccination strategies and social measures will shape infections, hospital demand and casualties. Hence, we extend the Susceptible-Exposed-Infectious-Removed (SEIR) model to include vaccination, ICU, hospital and death. We calibrate it to data of Luxembourg, Austria and Sweden. The model quantifies the vaccination rate needed for herd immunity by desired times. Aiming to vaccinate the whole population within 1 year at a constant rate could lead to herd immunity only by mid-summer. Herd immunity might not be reached in 2021 if too slow vaccines roll-out speeds, which we quantify, are employed. Vaccination will help considerably, but not immediately, thus social measures still remain crucial for months.

Practical information

Date: 4 March 2021
Time: 20:00-21:00
Place: Microsoft Teams
Fee: Free
Registration: please register by sending an email to Michela Bia (

International Conference on Accounting & Assessment in Statistics (ICAAS) 2021

National and Business Accounts for Sustainable Development Policies

The International Conference on Accounting & Assessment in Statistics (ICAAS) 2021 is a online conference, based on the overarching need to discuss ongoing developments on this topic in response to policy needs. ICAAS is held to address the issues of statistical methodologies and thematic applications in accounting and assessment. Discussions will focus on the new tools provision, particularly in the areas needed for sustainable development policies.

Several questions arise: which kind of information is needed for Sustainable Development? To what extent these information needs can be met by accounting in statistics? Which data are already available and which missing data should be collected? Which are the statistical issues to be addressed and the limits of this approach? Which are the best experiences and practices developed in this area? These and further issues in methodological and applied statistics: contributions are expected on both these areas.

The Luxembourg Statistical Society (LSS) is organizing the event with the support of FENStatS, Statec, Eurostat, University of Luxembourg, PWC-Luxembourg and the IARNIW of India.

Practical information

Date: Monday 31 May to Friday 4 June 2021
Place: online
Fee: free

Further information: ICAAS ONLINE CONFERENCE

International Conference on Statistics and Related Fields

It is our pleasure to announce that the International Conference on Statistics and Related Fields (ICON STARF) will take place between 12 and 16 July 2021 at the University of Luxembourg, on Belval campus. The conference will cover the fields of mathematical statistics, signal processing, statistical learning, probability, approximation theory, and other areas that contribute to the mathematical development of data science.  

Our aim is to bring together young researchers and experts of these fields. Lectures will be given by leading international researchers from all over the world (China, France, Germany, the Netherlands, the United Kingdom, the United States, etc.). We shall allow time for discussion and stimulate scientific exchanges among participants. Registration fees are low and financial support for travel and accommodation is available for doctoral students, post-docs and young researchers.

ICON STARF international conference is an initiative of the SanDAL project funded by the European Union’s Horizon 2020 research and innovation programme under grant agreement No 811017. The University of Luxembourg has been awarded the SanDAL project to set up a new ERA Chair in mathematics and statistics.

Practical information

Date: 12-16 July 2021
Time: 09:00-16:00
Place: University of Luxembourg, Belval Campus, Maison du Savoir
2, avenue de l’Université, L-4365 Esch-sur-Alzette
Fee: 60€
Registration: please register before 1 June 2021 via this link

Further information:

Seminar on « The long-run effect of childhood poverty and the mediating role of education »

On Thursday, 10 December 2020, at 13:00, the Luxembourg Statistical Society is proud to welcome  Michela Bia for a seminar on « The long-run effect of childhood poverty and the mediating role of education ».

Ms Michela Bia is secretary of the LSS and she works as researcher at LISER.

The manuscript, co-authored with Luna Bellani, has been published last year on the Journal of the Royal Statistical Society (Statistics in Society) Series A, 2019, vol. 182, n°1, pp. 37-69 .

The seminar will be held online and the link to the presentation wills provided on request.

The study examines the role of education as a causal channel through which growing up poor affects the economic outcomes in adulthood in the European Union. We apply a potential outcomes approach to quantify those effects and we provide a sensitivity analysis on possible unobserved confounders, such as child ability. Our estimates indicate that being poor in childhood significantly decreases the level of income in adulthood and increases the average probability of being poor. Moreover, our results reveal a significant role of education in this intergenerational transmission. These results are particularly relevant for Mediterranean and central and eastern European countries.

Winter School on Mathematical Statistics

In the frame of the « ERA Chair in Mathematical Statistics and Data Science – SanDAL », the University of Luxembourg organises an online Winter School on Mathematical Statistics from 7 to 11 December 2020.

This school is aimed at young researchers (PhD students and early postdocs) and practitioners alike and offers an excellent opportunity to learn about recent and important developments in mathematical statistics directly from leaders in their respective fields

The following three courses will be offered:

Non-parametric Inference under Local Differential Privacy
Cristina Butucea (CREST ENSAE, Université ParisTech)
Principal Component Analysis: some recent results and applications
Karim Lounici (CMAP-Ecole Polytechnique)
Statistical inference of incomplete data models to analyse ecological networks
Stéphane Robin (AgroParisTech/INRA/univ. Paris Saclay & Muséum National d’Histoire Naturelle)

Dates: From 7 to 11 December 2020

More information on:

17 octobre : Journée mondiale de la statistique

À l’occasion de la Journée mondiale de la statistique, nous vous invitons à vous plonger dans le monde insolite des statistiques .

Un show et une exposition ludiques pour toute la famille vous permettront de découvrir l’impact des chiffres sur votre vie quotidienne.

Horaire : RDV le samedi 17 octobre 2020 de 15h00 à 17h00 au Science Center

Adresse: Luxembourg Science Center – 50 Rue Emile Mark, L-4620 Differdange

Attention: places limitées!

Inscriptions : Pour participer, veuillez envoyer un email à

Vue comparative sur la propagation du virus

Pierre Mangers, membre SLS, vous propose le graphique ci-dessus décrivant le temps de doublement du nombre de personnes testées positives à partir d’un effectif de 100 personnes. Le graphique s’appuie sur les données officielles publiées pour une partie de la Grande Région. Plus la courbe est plate, plus le temps de doublement des personnes testées positives est court, donc plus la propagation du virus est élevée. A l’inverse pour le Luxembourg, la courbe descend plus vite traduisant une propagation plus lente du virus. Il montre aussi qu’il y a une différence de 7 jours à la date de mi-avril entre le Luxembourg et la France.