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John Klein

Maître de conférence


Université Lille 1

Bâtiment P2 - Bureau 205


Adresse: Cité Scientifique

Avenue Carl GAUSS

59650 Villeneuve d’ascq

Téléphone: (+33) 03 20 43 48 77



Research Interests :

Ill known probabilities with applications to information fusion, signal processing or machine learning.

Real life data are tainted with many imperfections (uncertainty, imprecision, ambiguity, incompleteness, inconsistency and so on..). What can data scientists do with pieces of information like

  • This guy is about 30 years old
  • The target is in volume V with a probability greater than 0.8

In both example, one wishes to estimate an unknown quantity (age of the guy, 3D position of the target). There is no obvious way to characterize these quantities by a single probability measure.
Instead, one may relax single probability representations and characterize the unknown quantities by sets of probabilities or by probabilities of probabilities. This is what ill-known probabilities are about.

Related frameworks are for instance

  • imprecise probabilities,
  • belief functions,
  • random measures,
  • hierarchical Bayes.


Teaching activities :

I am in charge of the following courses at the department of electronics, electrical engineering and automation of Lille1

  • Signal Processing (Master ASE - 1st year)
  • Mobile Robotics project - initiation (Master ASE - 1st year)
  • UML (Master GI - 1st year)
  • Real Time Systems (Master GI - M2 II)
  • Software Engineering (Master GI - 1st year)

Since 2016, I am in charge of the following course at the department of computer sciences of Lille1

  • Machine Learning (Master Informatique - M2 MOCAD)

Finally, I am also in charge of the following course at Ecole Centrale de Lille

  • Data Fusion (Final year students)