Marcello Negri

Marcello Negri

PhD candidate

University of Basel

I am a highly motivated PhD student at the University of Basel under the supervision of Volker Roth. Currently, I am working to make machine learning models more expressive and interpretable at the same time.

During my PhD

As a first result we improved sparsity in Bayesian graphical models with Conditional Matrix Flows (see NeurIPS publication). In parallel, together with Fabricio Arend Torres we developed a physics-informed deep learning model that conserves the continuity equation by construction (see ICLR Spotlight - top 5% papers).

We also developed a comprehensive library of (conditional) Normalizing Flows in PyTorch named FlowConductor.

As a side project, I recently helped Human Rights Watch developing a software to detect village burnings in Darfur, Sudan.

Before my PhD

Previously, I worked on my MSc thesis with Gunnar Rätsch (ETH) at the interface between VAEs and meta-learning. As a research assistant I worked with Aurelian Lucchi and Thomas Hofmann (ETH) on a inter-disciplinary project about deep learning for gravitational wave physics. Previously, I also worked with Frank Schweitzer (ETH) to help the group with data analysis tasks in three different projects.

Interests
  • Bayesian Inference with Normalizing Flows
  • Sparsity and interpretability
  • Physics-informed ML
Education
  • PhD in Machine Learning, 2022-ongoing

    University of Basel

  • MSc in Physics, 2019-2021

    ETH Zürich

  • BSc in Physics, 2016-2019

    Università degli Studi di Milano

Experience

 
 
 
 
 
Research assistant
ETH Zürich - Data Analytics Lab (prof. Hofmann)
Mar 2022 – May 2022 Switzerland
I built a deep learning emulator of complex cosmological simulations and an inverse regression model to constrain the source of gravitational waves originating from black holes.
 
 
 
 
 
Research assistant
ETH Zürich - Systems Design (prof. Schweitzer)
Jun 2021 – Feb 2021 Switzerland
My work included data analysis tasks within three different projects and included data collection, processing and cleaning with large datasets in a Python and Unix environment.

Recent Publications

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(2023). Lagrangian Flow Networks for Conservation Laws. In Spotlight ICLR 2024.

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(2023). Conditional Matrix Flows for Gaussian Graphical Models. In NeurIPS 2023.

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(2022). Mesh-free Eulerian Physics-Informed Neural Networks. In Arxiv.

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(2021). Meta-learning richer priors for VAEs. In AABI.

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