Posts by Collection

portfolio

publications

Irregular layout for a satellite’s interferometric array

Published in IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021

We propose a solver to optimize the antenna placement on satellite-mounted interferometric synthetic-aperture instruments.

Recommended citation: Krzakala, Paul and Assouel, Amine, et al. (2021). Irregular layout for a satellite’s interferometric array. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 14, 9408-9423..
Download Paper

The Quest for the GRAph Level autoEncoder (GRALE)

Published in arXiv preprint, 2025

Self-supervised graph representation learning using a trainable graph matching module for computing the reconstruction loss.

Recommended citation: Krzakala, P., Melo, G., Laclau, C., d'Alché-Buc, F., & Flamary, R. (2025). The Quest for the GRAph Level autoEncoder (GRALE). arXiv preprint arXiv:2505.22109.
Download Paper

talks

Training Neural Networks to Predict Graphs. Who is afraid of the big bad NP-hardness ?

Published:

Graph learning is a rapidly growing area of machine learning, with most advances focused on problems where graphs are the input. Yet, many important tasks involve predicting graphs as the output. This setting poses a fundamental challenge: evaluating predictions requires solving the graph matching problem, an NP-hard task. In this talk I will: (a) review existing strategies to circumvent this obstacle, such as graph canonization and generative approaches; (b) demonstrate that, in a data-driven setting, the hardness barrier can effectively disappear as, for a given graph distribution, it is possible to learn a scalable solver; and (c) showcase how this strategy can be used to train a graph-level autoencoder i.e. a model that learns to encode (and decode) entire graphs into a vector space.

Download Download Slides

teaching

Machine Learning

Teaching Assistant, Télécom Paris, Institut Polytechnique, 1900

SD-TSIA210