Etienne Lasalle

Postdoctoral fellow - Applied Mathematics LS2N (SIMS team), Nantes, France
E-mail : etienne.lasalle"at"ls2n.fr Office : 311, S building, Centrale Nantes Campus
Former PhD student at LMO (proba-stats) and Inria (Datashape). PhD Advisors : Frédéric Chazal and Pascal Massart.

Research Interests

• Graph data
• Signal processing on graphs
• Data compression, dimensionality reduction, sketching
• Statistical testing (two-sample tests, multi-tests)
• Shift detection, anomaly detection
• Topological data analysis (TDA)

News

• September, 2025 - Our preprint Joint reproduction number and spatial connectivity structure estimation via graph sparsity-promoting penalized functional is out. Check it out here.
• August, 2025 - Our paper PASCO (PArallel Structured COarsening): an overlay to speed up graph clustering algorithms has been accepted at ECML 2025 (Journal Track) and published in Machine Learning.
  I presented this work in Porto on the 16th of September.
• March, 2025 - I started a new postdoctoral position in the Laboratoire des Sciences du Numérique de Nantes (LS2N).
  I will be working on signal processing on graphs with applications in epidemiology and neuroscience.