Keys Words

Machine learning, learning theory, deep learning, representation learning, dictionary learning, spectral learning, bandits, kernel methods, grammatical inference



Hachem KADRI


Permanent Members

ARTIERES ThierryProfesseur des Universités
Courriel : thierry.artieres@lis-lab.fr
Telephone : 0486090478
Page personnelle : https://pageperso.lis-lab.fr/thierry.artieres/
AYACHE StéphaneMaitre de Conférences
Courriel : stephane.ayache@lis-lab.fr
Telephone : 0486090452
Page personnelle : https://pageperso.lis-lab.fr/stephane.ayache/
CAPPONI CécileMaitre de Conférences
Courriel : cecile.capponi@lis-lab.fr
Telephone : 0486090478
Page personnelle : https://pageperso.lis-lab.fr/cecile.capponi/
DUPÉ François-xavierMaitre de Conférences
Courriel : francois-xavier.dupe@lis-lab.fr
Telephone : 0486090478
EMIYA ValentinMaitre de Conférences
Courriel : valentin.emiya@lis-lab.fr
Telephone : 0486090486
Page personnelle : https://pageperso.lis-lab.fr/valentin.emiya/
EYRAUD RémiMaitre de Conférences
Courriel : remi.eyraud@lis-lab.fr
Telephone : 0486090466
Page personnelle : https://pageperso.lis-lab.fr/remi.eyraud/
KADRI HachemMaitre de Conférences
Courriel : hachem.kadri@lis-lab.fr
Telephone : 0486090475
Page personnelle : https://pageperso.lis-lab.fr/hachem.kadri/
RALAIVOLA LivaProfesseur des Universités
Courriel : liva.ralaivola@lis-lab.fr
Telephone : 0486090671
Page personnelle : https://pageperso.lis-lab.fr/liva.ralaivola/
SICRE RonanMaitre de Conférences
Courriel : ronan.sicre@lis-lab.fr


Phd Studients

BAUVIN BaptisteDoctorant
Courriel : baptiste.bauvin@lis-lab.fr
Courriel : leo.bouscarrat@lis-lab.fr
CHERFAOUI FarahDoctorant
Courriel : farah.cherfaoui@lis-lab.fr
DAGENS TomDoctorant
Courriel : tom.dagens@lis-lab.fr
ECM TestDoctorant
Courriel : test.ecm@lis-lab.fr
FERRE QuentinDoctorant
Courriel : quentin.ferre@lis-lab.fr
GIFFON LucDoctorant
Courriel : luc.giffon@lis-lab.fr
Page personnelle : https://pageperso.lis-lab.fr/luc.giffon/
GUO ZiyuDoctorant
Courriel : gzypb230@gmail.com
Telephone : 0491827647
HUUSARI RiikkaDoctorant
Courriel : riikka.huusari@lis-lab.fr
Telephone : 0486090478
Page personnelle : https://pageperso.lis-lab.fr/riikka.huusari/
KREME Ama-marinaDoctorant
Courriel : ama-marina.kreme@lis-lab.fr
QI WangDoctorant
Courriel : wang.qi@lis-lab.fr
Telephone : 0486090478
Page personnelle : https://pageperso.lis-lab.fr/wang.qi/
WANG QiqiDoctorant
Courriel : qiqi.wang@lis-lab.fr
Page personnelle : https://pageperso.lis-lab.fr/qiqi.wang/


Other staff members

DENIS FrançoisProfesseur des Universités Emerite
Courriel : francois.denis@lis-lab.fr
Telephone : 0486090478
Page personnelle : https://pageperso.lis-lab.fr/francois.denis/
Courriel : ronan.hamon@lis-lab.fr
Page personnelle : https://pageperso.lis-lab.fr/ronan.hamon/
KOCO SokolPost-Doctorant
Courriel : sokol.koco@lis-lab.fr
MILANESI PaoloPost-Doctorant
Courriel : paolo.milanesi@lis-lab.fr
SELLAMI AkremPost-Doctorant
Courriel : akrem.sellami@lis-lab.fr
Courriel : brian.smith@lis-lab.fr
Telephone : 0491919191
VILLOUTREIX PaulPost-Doctorant
Courriel : paul.villoutreix@lis-lab.fr

Research interests

QARMA is the machine learning research team of “Laboratoire d’Informatique et Systèmes” (LIS). The team focuses on three major aspects of machine learning: learning theory, deep learning, and learning in the context of signal processing. QARMA is the to-go team of machine learning in certain theoretical aspects such as spectral learning, grammatical inference, operator-valued kernels, and generalization bounds. The approach to learning and signal processing is
enriched by collaborations with mathematicians from I2M and other laboratories.

The team promotes the benefit of research focused on both fundamental aspects and applications that generate original and challenging problems to investigate. QARMA is part of multiple theoretical and/or applied research projects. Some of the team’s favourite applications are neuroscience, bioinformatics, astrophysics, as well as music, multimedia, and time series.

The QARMA team was founded in 2012 and includes 10 permanent members and ten to fifteen doctoral students and post doctoral research fellows. In the LIS, Qarma belongs to the “pole Science des Données”. The team is primarily located in Chateau-Gombert. Some doctoral students are co-tutored with INT, CPPM, TAGC or University of Quebec.


Scientific publications

9 documents

Article dans une revue

  • Victor Chepoi, Arnaud Labourel, Sébastien Ratel. On density of subgraphs of halved cubes. European Journal of Combinatorics, Elsevier, 2018. ⟨hal-01959093⟩
  • Jérémie Chalopin, Victor Chepoi, Hirai Hiroshi, Damian Osajda. Weakly modular graphs and nonpositive curvature. Memoirs of the American Mathematical Society, American Mathematical Society, In press. ⟨hal-01787197⟩
  • Jérémie Chalopin, Victor Chepoi, Damian Osajda. On two conjectures of Maurer concerning basis graphs of matroids. Journal of Combinatorial Theory, Series B, Elsevier, 2015, 114, pp.1-32. ⟨10.1016/j.jctb.2015.03.004⟩. ⟨hal-02065778⟩

Communication dans un congrès

  • Victor Chepoi, Feodor Dragan, Michel Habib, Yann Vaxès, Hend Alrasheed. Fast Approximation of Centrality and Distances in Hyperbolic Graphs. COCOA 2018 - 12th Annual International Conference on Combinatorial Optimization and Applications, Dec 2018, Atlanta, United States. pp.1-23. ⟨hal-01955263⟩
  • Jérémie Chalopin, Victor Chepoi, Feodor Dragan, Guillaume Ducoffe, Abdulhakeem Mohammed, et al.. Fast Approximation and Exact Computation of Negative Curvature Parameters of Graphs. 34th International Symposium on Computational Geometry (SoCG 2018), Jun 2018, Budapest, Hungary. pp.22, ⟨10.4230/LIPIcs.SoCG.2018.22⟩. ⟨hal-01836063⟩
  • Jérémie Chalopin, Victor Chepoi. A Counterexample to Thiagarajan's Conjecture on Regular Event Structures. ICALP 2017, 2017, Warsaw, Poland. ⟨10.4230/LIPIcs.ICALP.2017.101⟩. ⟨hal-01787205⟩

Pré-publication, Document de travail

  • Jérémie Chalopin, Victor Chepoi. 1-Safe Petri nets and special cube complexes: equivalence and applications. 2019. ⟨hal-01863455v2⟩
  • Jérémie Chalopin, Victor Chepoi, Shay Moran, Manfred K. Warmuth. Unlabeled sample compression schemes and corner peelings for ample and maximum classes. 2019. ⟨hal-02065772⟩
  • Jérémie Chalopin, Victor Chepoi, Feodor F. Dragan, Guillaume Ducoffe, Abdulhakeem Mohammed, et al.. Fast approximation and exact computation of negative curvature parameters of graphs. 2018. ⟨hal-01737445⟩