Zacharie Ales

Position --- I am currently an associate professor at [ENSTA](https://www.ensta-paris.fr/) in the [UMA laboratory](http://uma.ensta-paristech.fr/). I am also associated to the OC team of the CEDRIC laboratory. From 2015 to 2017 I was an associate professor at the [University of Avignon](http://www.univ-avignon.fr/) in the team Operational Research and Optimisation of the [LIA laboratory](http://lia.univ-avignon.fr/). I obtained my PhD in 2014 from [INSA de Rouen](http://www.insa-rouen.fr/accueil?set_language=fr&cl=fr) in the [LMI](http://lmi.insa-rouen.fr/) and [LITIS](http://www.litislab.eu/) laboratories under the supervision of [Christian Gout](http://lmi.insa-rouen.fr/membres/9-membres/professeurs/15-gout-christian.html), [Laurent Vercouter](https://pagesperso.litislab.fr/lvercouter/), [Arnaud Knippel](http://arnaud.knippel.free.fr/) and [Alexandre Pauchet](http://asi.insa-rouen.fr/enseignants/~apauchet/). The aim of my thesis (available [here](https://sites.google.com/site/zacharieales/ALES%20-%20Manuscrit.pdf?attredirects=0&d=1) in french) was to extract regularities in two-dimensional dialogue annotations. To this end we developped a two-step methodology in which recurrent patterns are first extracted (using approaches based on bioinformatic algorithms) and then clustered (either thanks to heuristics or by solving a mixed integer program). The methods have been implemented in a decision aid software called [VIESA](https://github.com/ZacharieALES/viesa). Research interests --- ο Combinatorial optimisation ο Mathematical programming ο Data science ο Polyhedral approach ο Robust optimisation ο Clustering and scheduling problems ο Data mining