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Sebastian Risi

8 accepted papers

2025

Bio-Inspired Plastic Neural Networks for Zero-Shot Out-of-Distribution Generalization in Complex Animal-Inspired Robots

Binggwong Leung, Worasuchad Haomachai, Joachim Winther Pedersen, Sebastian Risi, Poramate Manoonpong
IROS 2025

Artificial neural networks can be used to solve a variety of robotic tasks. However, they risk failing catastrophically when faced with out-of-distribution (OOD) situations. Several approaches have employed a type of synaptic plasticity known as Hebbian learning that can dynamically adjust weights b

Cited by 2Source ↗Scholar ↗
2025

Continuous Thought Machines

Luke Nicholas Darlow, Ciaran Regan, Sebastian Risi, Jeffrey Seely, Llion Jones
NeurIPS 2025spotlight

Biological brains demonstrate complex neural activity, where neural dynamics are critical to how brains process information. Most artificial neural networks ignore the complexity of individual neurons. We challenge that paradigm. By incorporating neuron-level processing and synchronization, we reint…

Cited by 0Source ↗code ↗Scholar ↗
2023

MarioGPT: Open-Ended Text2Level Generation through Large Language Models

Shyam Sudhakaran, Miguel González-Duque, Matthias Freiberger, Claire Glanois, Elias Najarro, Sebastian Risi
NeurIPS 2023poster

Procedural Content Generation (PCG) is a technique to generate complex and diverse environments in an automated way. However, while generating content with PCG methods is often straightforward, generating meaningful content that reflects specific intentions and constraints remains challenging. Furt…

Cited by 80Source ↗PDF ↗code ↗Scholar ↗
2022

Physical Neural Cellular Automata for 2D Shape Classification

Kathryn Walker, Rasmus Berg Palm, Rodrigo Moreno, Andres Faina, Kasper Stoy, Sebastian Risi
IROS 2022poster

Materials with the ability to self-classify their own shape have the potential to advance a wide range of engineering applications and industries. Biological systems possess the ability not only to self-reconfigure but also to self-classify themselves to determine a general shape and function. Previ…

Cited by 12Source ↗code ↗Scholar ↗
2022

Variational Neural Cellular Automata

Rasmus Berg Palm, Miguel González Duque, Shyam Sudhakaran, Sebastian Risi
ICLR 2022poster

In nature, the process of cellular growth and differentiation has lead to an amazing diversity of organisms --- algae, starfish, giant sequoia, tardigrades, and orcas are all created by the same generative process. Inspired by the incredible diversity of this biological generative process, we propos…

Cited by 34Source ↗PDF ↗code ↗Scholar ↗
2021

Deep Innovation Protection: Confronting the Credit Assignment Problem in Training Heterogeneous Neural Architectures

Sebastian Risi, Kenneth O. Stanley
AAAI 2021technical

Deep reinforcement learning approaches have shown impressive results in a variety of different domains, however, more complex heterogeneous architectures such as world models require the different neural components to be trained separately instead of end-to-end. While a simple genetic algorithm rece…

Cited by 2Source ↗PDF ↗code ↗Scholar ↗