BROOKS Daniel

PhD graduated
Team : MLIA
Departure date : 07/03/2020

Supervision : Matthieu CORD
Co-supervision : SCHWANDER Olivier

Deep Learning and Information Geometry for Time-Series Classification

This work tackles the classification of structured time series, in particular micro-Doppler radar signals from non-cooperative drone targets. We first dwell upon the rich internal structure of such signals, which births a variety of different, yet relatable input representations which in turn may yield a variety of different learning models, namely convolutional and SPD neural networks. We then show how we can adapt known models to the structure of the data through the scope of information geometry, and go further by building novel schemes for the classification of such data. We finally demonstrate a full-classification pipeline making use of all aforementioned structures involved in data formation and classification, and present results thereupon on multiple datasets of real and synthetic data.

Defence : 07/03/2020 - 10h - Visioconférence
Jury members :
Mme. Florence Tupin, Professeure, Télécom Paris [Rapporteur]
M. Marco Congedo, CR CNRS, Grenoble [Rapporteur]
M. Yannick Berthoumieu, Professeur, IMS Bordeaux
M. Frédéric Barbaresco, Senior scientist, THALES
M. Hichem Sahbi, CR CNRS, Sorbonne Université
M. Olivier Schwander, MdC, Sorbonne Université
M. Matthieu Cord, Professeur, Sorbonne Université

2018-2020 Publications

All Journal articles Conference papers

2020
- N. Miolane, N. Guigui, A. Le Brigant, J. Mathe, B. Hou, Y. Thanwerdas, S. Heyder, O. Peltre, N. Koep, H. Zaatiti, H. Hajri, Y. Cabanes, Th. Gerald, P. Chauchat, Ch. Shewmake, D. Brooks, B. Kainz, C. Donnat, S. Holmes, X. Pennec : “Geomstats: A Python Package for Riemannian Geometry in Machine Learning”, Journal of Machine Learning Research, vol. 21 (223), pp. 1-9, (Microtome Publishing) (2020)
- N. Miolane, N. Guigui, H. Zaatiti, Ch. Shewmake, H. Hajri, D. Brooks, A. Le Brigant, J. Mathe, B. Hou, Y. Thanwerdas, S. Heyder, O. Peltre, N. Koep, Y. Cabanes, Th. Gerald, P. Chauchat, B. Kainz, C. Donnat, S. Holmes, X. Pennec : “Introduction to Geometric Learning in Python with Geomstats”, SciPy 2020 - 19^th Python in Science Conference, Austin, Texas, United States, pp. 48-57 (2020)
2019
- D. Brooks, O. Schwander, F. Barbaresco, J.‑Y. Schneider, M. Cord : “Riemannian batch normalization for SPD neural networks”, Thirty-third Annual Conference on Neural Information Processing Systems., Vancouver, Canada (2019)
- D. Brooks, O. Schwander, F. Barbaresco, J.‑Y. Schneider, M. Cord : “A Hermitian Positive Definite neural network for micro-Doppler complex covariance processing”, International Radar Conference, Toulon, France (2019)
- D. Brooks, O. Schwander, F. Barbaresco, J.‑Y. Schneider, M. Cord : “Second-order networks in PyTorch”, GSI 2019 - 4^th International Conference on Geometric Science of Information, vol. 11712, Lecture Notes in Computer Science, Toulouse, France, pp. 751-758, (Springer) (2019)
- D. Brooks, O. Schwander, F. Barbaresco, J.‑Y. Schneider, M. Cord : “Exploring Complex Time-series Representations for Riemannian Machine Learning of Radar Data”, ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing, Brighton, United Kingdom, pp. 3672-3676, (IEEE) (2019)
2018
- D. Brooks, O. Schwander, F. Barbaresco, J.‑Y. Schneider, M. Cord : “Temporal Deep Learning for Drone Micro-Doppler Classification”, IRS 2018 - 19^th International Radar Symposium, Bonn, Germany, (IEEE) (2018)