- Robustness of classifiers: from adversarial to universal perturbations, Google Research, Zurich, Switzerland, January 2017.
- On the robustness of image classifiers, Laboratory of Psychophysics, EPFL, Lausanne, Switzerland, June 2016
- Representation learning for graph signals, Xerox Research Centre Europe, Grenoble, France, June 2016.
- Learning Sparse Representations for Graph Signals, HIM Workshop on Harmonic Analysis, Graphs and Learning, Bonn, Germany, March 2016.
- Graph signal processing and applications, IEEE Summer School on Signal Processing, Garda Lake, Italy, Sep 2015.
- Graph-based multimedia processing, Plenary Overview Talk, IEEE ICME 2015, Torino, Italy
- Spectral Graph Dictionaries, Plenary Talk, SAMPTA 2015, Washington DC, USA