CS

Curriculum vitae

Carlos Stein
Naves de Brito.

Lisbon, Portugal · Brazilian · cstein06@gmail.com · +351 910 242 827 · scholar · github · linkedin · nightcitylabs.ai

Research positions

2025–

Director · NightCity Labs · Lisbon

Independent AI-driven research and discovery lab developing multi-agent frameworks, with applications across computational neuroscience, machine learning, reliable AI, AI process automation, robotics, consciousness, and NeuroAI.

2022–25

Research Scientist · Champalimaud Research

Natural Intelligence Lab, Champalimaud Centre for the Unknown (CCU), Lisbon, Portugal.

2019–21

Visiting Scientist · EPFL

Laboratory of Computational Neuroscience (LCN), Lausanne, Switzerland.

2016–19

Postdoctoral Researcher · Gatsby UCL

Gatsby Computational Neuroscience Unit, University College London. Supervisor: Peter Latham.

Professional experience

2020–21

Machine Learning Expert · Cambridge Spark · Cambridge, UK

Lead developer of an advanced machine learning course for hedge-fund scientists at G-Research, covering ML fundamentals, deep learning, large-scale recurrent models, and Bayesian ML. Lead developer of the public G-Research Crypto Forecasting Kaggle competition (a Featured competition with 23,000+ entrants, ~1,900 teams). Authored a widely-used tutorial notebook on robust time-series pipelines and validation schemes.

2006

Software Engineer Intern · Google · Mountain View, CA

Software development for large-scale data storage and retrieval in online advertisement systems.

2003

Software Engineer Intern · Aero-Spatial Institute (IAE), CTA · Brazil

Development, parallelisation and optimisation of high-performance software for computational fluid dynamics.

Education

2010–16

PhD · Computational Neuroscience · EPFL

Laboratory of Computational Neuroscience, École Polytechnique Fédérale de Lausanne, Switzerland. Supervisor: Wulfram Gerstner. Dissertation: Theory of representation learning in cortical neural networks.

2008–09

MSc · Neuroscience · University of São Paulo

Laboratório de Neurociências – Hospital Sírio-Libanês, USP, Brazil. Supervisor: Koichi Sameshima. Dissertation: Statistical models of connectivity between brain areas.

2002–07

BSc · Computer Engineering · Instituto Tecnológico de Aeronáutica (ITA)

Brazil.

Publications

2026
Scaling of learning time for high dimensional inputs

Brito C.S.N.. arXiv:2603.01184 [cs.LG].

2026
Thinking About Thinking With Machines That Think

Brito C.S.N. et al.. ICLR 2026, Post-AGI Science and Society Workshop.

2025
Precise Bayesian Neural Networks

Brito C.S.N.. arXiv:2506.19726 [cs.LG].

2025
Cross-regularization: Adaptive Model Complexity through Validation Gradients

Brito C.S.N.. International Conference on Machine Learning (ICML).

2025
World Models as Reference Trajectories for Rapid Motor Adaptation

Brito C.S.N. et al.. Advances in Neural Information Processing Systems (NeurIPS).

2025

World Models as Reference Trajectories for Rapid Motor Adaptation

Brito C.S.N. et al.. ICLR Robot Learning Workshop.

2024
Learning what matters: Synaptic plasticity with invariance to second-order input correlations

Brito C.S.N., Gerstner W.. PLOS Computational Biology 20(2): e1011844.

2021
Correlation-invariant synaptic plasticity

Brito C.S.N., Gerstner W.. arXiv:2105.10109.

2016
Nonlinear Hebbian learning as universal principle in receptive field development

Brito C.S.N., Gerstner W.. PLOS Computational Biology 12: e1005070.

2013

Unified Asymptotic Theory for All Partial Directed Coherence Forms

Baccalá L.A., Brito C.S.N., Takahashi D.Y., Sameshima K.. Philosophical Transactions of the Royal Society A 371: 20120158.

2010

Asymptotic behavior of generalized partial directed coherence

Brito C.S.N., Baccalá L.A., Takahashi D.Y., Sameshima K.. Annual International Conference of the IEEE EMBS, pp. 1718–1721.

Posters and conference contributions

2025

The Blue is Sky: Color Qualia as Learned Associative Structures

Association for the Scientific Study of Consciousness (ASSC).

2025

Hierarchical Integration of RL and Cerebellar Control for Robust Flexible Locomotion

Conference on Reinforcement Learning and Decision Making (RLDM) — selected talk.

2025

Dual-Model Framework for Cerebellar Function: Integrating Reinforcement Learning and Adaptive Control

Cosyne.

2018

Plasticity of adaptation regulates neural activity and temporal correlation for arbitrary input statistics

Brito C.S.N., Gerstner W.. AREADNE.

2016

Plasticity of adaptation stabilizes neural activity and induces temporal decorrelation

Brito C.S.N., Gerstner W.. Cosyne.

2015

Homeostatic synaptic depression explains receptive field development by implicit whitening

Brito C.S.N., Gerstner W.. Cosyne.

2015

Nonlinear Hebbian learning as a universal principle in unsupervised feature learning

Brito C.S.N., Gerstner W.. ICML Deep Learning Workshop — selected talk.

2014

A unifying theory of receptive field development

Brito C.S.N., Gerstner W.. Cosyne — selected talk.

2013

A model of perceptual discrimination under sequential sensory evidence

Hughes E., Brito C.S.N., Gerstner W., Romo R., Deco G.. CNS.

2011

General conditions for spiking neurons and plasticity rules to perform independent component analysis

Brito C.S.N., Gerstner W.. CNS.

Invited talks

2019

Generalization, regularization and Bayesian neural networks

Gatsby UCL Transfer Talk.

2019

Adaptive regularization by noise in deep neural networks

Albert Einstein Hospital – Big Data Initiative.

2018

Five ways to regularize deep neural networks

LCN EPFL Seminars.

2015

An empiricist connectionist theory of color perception

Herzog Lab – EPFL Seminars.

2015

Theory of synaptic plasticity for receptive field development

Oxford Neurotheory Seminars.

2013

Sparse coding with spiking neurons and Hebbian plasticity

FACETS-ITN meeting.

Research advising

2024

Camillo Heye · MSc thesis project

CCU / LMU Munich. Modelling naturalistic motor control and its dysfunction with deep reinforcement learning.

2014

Eszter Vertes · MSc thesis project · EPFL

Top-down mechanisms in the visual cortex. Best thesis award.

2013

Gevorg Poghosyan · Master semester project · EPFL

Multilayer unsupervised learning with realistic networks.

2012–13

Guillaume Riesen · Fulbright project · EPFL

Development of V1 orientation maps with local plasticity rules.

Teaching and tutoring

2011–16

Graduate Course Teaching Assistant · EPFL

Unsupervised and reinforcement learning in neural networks · pattern classification and machine learning · biological modeling of neural networks.

2019

Tutor · Cajal Course in Computational Neuroscience (CCCN)

Champalimaud Centre for the Unknown, Lisbon.

2019

Tutor · No-Budget Science Hack Week

Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro.

Academic awards

2001

Silver Medal · International Mathematical Olympiad (IMO)

Washington DC, representing Brazil.

2005, 2006

World Finalist · International Collegiate Programming Contest (ICPC)

2000–04

Gold Medal ×4 · Brazilian Mathematical Olympiad

2000, 2001, 2003, 2004.

2004, 2005

Second Prize · International Mathematics Competition (IMC)

University-level.

2001

First Prize · Brazilian Physics Olympiad

Courses and scholarships

2014

Brains, Minds & Machines (CBMM) Summer Course

Woods Hole, USA.

2011

Advanced Course in Computational Neuroscience (ACCN)

Będlewo, Poland.

2010–13

FACETS-ITN · Marie Curie PhD scholarship

2005

DAAD Hochschulwinterkurs scholarship for German studies

Freiburg, Germany.

Academic service

2018–25

Conference Media Chair · Cosyne

Created the Cosyne Talks YouTube channel, extending the conference to a global audience with live streams during each meeting and an open archive of past talks. cosyne.org.

2022–24

External Seminar Organiser · Champalimaud Research

2022–24

Founder and Organiser · Theory Mini-Symposium series · Champalimaud Research

2017–19

Seminar Organiser · Gatsby UCL Weekly External Seminars

ongoing

Referee · Cosyne · NeurIPS · ICML · ICLR

ongoing

Guest editor · PLOS Computational Biology

Scientific outreach

2024

Chatsubo · Interactive AI art installation

Metamersion: Healing Algorithms, Champalimaud Foundation, Lisbon. Immersive multi-agent conversational environment exploring identity and human–AI interaction.

2024

Science on the Walls · Ciência nas Paredes

Volunteer scientist, hands-on science and art activities for children in underprivileged neighbourhoods of Lisbon.

2018

Artificial Intelligence and Medicine · seminar

Itaú Cultural, São Paulo, Brazil.

2014

Neuroscience: the search for understanding brain and mind

Book chapter with O. Pessoa, in Science at the turn of the century, EDUFBa, Brazil.

2013

How the brain represents the world · seminar

Arte della Tavola art exposition, Lausanne, Switzerland.

Languages and tools

Languages

Portuguese (native) · English (fluent) · Spanish (advanced) · French (intermediate) · German (intermediate)

Stack

Python · C++ · Julia · Matlab · PyTorch · Google ADK (multi-agent RL framework)