Joan Bruna
Joan Bruna is a professor of computer science and data science at NYU and a co-founder of its Math and Data group; his research develops mathematical foundations for machine learning. He studied mathematics and telecommunications in Spain and applied mathematics in France, earning an applied mathematics PhD in 2013. His work includes a 2012 wavelet scattering network for image classification and a 2013 graph-based extension of convolutional networks. After working as a research engineer and holding postdoctoral roles at NYU and Facebook AI Research, he joined UC Berkeley in 2015. He received a Sloan Research Fellowship in 2018 and an NSF CAREER Award in 2019, and his coauthored neural-network paper received ICLR’s Test of Time Runner-Up in 2024.
- Now at
- New York University
- Works
- 184
Publication numbers from OpenAlex, as of 15 October 2026. Citations and h-index are hidden because this OpenAlex record may be incomplete or mix in other authors.
Timeline
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2002–2005
Studying mathematics and telecommunications
He earns a mathematics degree at Polytechnic University of Catalonia in 2002, telecommunications degrees there in 2004, and an applied mathematics MSc at École Normale Supérieure in 2005.
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2012
Wavelet scattering for images
In 2012, he and Stéphane Mallat publish a wavelet scattering network that computes translation-invariant image representations stable to deformations for classification.
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2013
A PhD and graph networks
Before his doctorate, he works as a research engineer at an image-processing startup, developing real-time video algorithms. He completes a PhD in applied mathematics at École Polytechnique in 2013. In December 2013, he and three coauthors propose CNN architectures for graph signals using hierarchical clustering or the graph Laplacian.
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2015
Statistics professor at Berkeley
After a postdoctoral stay at NYU’s Courant Institute and a postdoctoral fellowship at Facebook AI Research, he becomes an assistant professor in UC Berkeley’s Statistics Department in January 2015.
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2018–2019
Sloan and CAREER awards
He wins a Sloan Research Fellowship in 2018 and an NSF CAREER Award in 2019.
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2024
An ICLR Test of Time award
He and coauthors receive ICLR’s 2024 Test of Time Runner-Up for “Intriguing properties of neural networks.” The paper highlights how small, almost imperceptible input variations can fool neural networks and prompts work on adversarial attacks and defenses.
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As of October 2026
Professor and group co-founder
He is a professor of computer science and data science at NYU and a co-founder of its Math and Data group. His research focuses on mathematical foundations of machine learning.
Sources and credits
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- Joan Bruna | NYU Courant
- [1203.1513] Invariant Scattering Convolution Networks
- Joan Bruna | Department of Statistics
- [1312.6203] Spectral Networks and Locally Connected Networks on Graphs
- Colloquium Details | NYU Computer Science
- Sloan Fellowship | NYU Computer Science
- Achievements | NYU Computer Science
- ICLR 2024 Test of Time Award
- Joan Bruna
- Tenure-Track Faculty | NYU Computer Science