Tutorial: Neuroevolution of Intelligent Agents

Yujin Tang, Sakana.ai
with
Sebastian Risi, IT University of Copenhagen and Sakana.ai
David Ha, Sakana.ai
Risto Miikkulainen, Neural Networks Research Group at UT Austin, and Cognizant AI Lab

Description

Neuroevolution, or optimization of neural networks through evolutionary computation, is a method for constructing intelligent agents through population-based search. It is particularly useful in partially observable domains with sparse and multiobjective reinforcement; compared to other policy search techniques, its power comes from extensive exploration that allows it to find effective, often surprising solutions. Prime application domains include robotic control, game-playing agents, and decision-making. More recently it has also been extended to optimizing deep-learning architectures, understanding how biological intelligence evolved, and optimizing neural networks for hardware implementation. It can also be used synergistically with reinforcement learning and LLMs, adding an element of exploration to those techniques. The tutorial introduces participants to neuroevolution fundamentals, progresses to several advanced topics that make neuroevolution effective and general, reviews example application areas, and proposes further research questions. It is accompanied by a hands-on exercise that makes the concepts concrete and allows the participants to take advantage of neuroevolution immediately.

Presentation Materials

TBA (see the IJCAI-25 tutorial for last year's slides and video).

Demos

The slides include numerous demos (i.e. animations). They don't run in the 4-up pdf, however they (and more) are included in the Neuroevolution book demo page.

Neuroevolution Exercise (Colab)

This excercise can be run as a notebook in Google Colab. There are three parts:

(1) Neuroevolution for control
(2) Evolutionary Model Merging
(3) Quality Diversity for Model Merging.

Instructions are given in the notebook.

Further Reading

Book: Neuroevolution: Harnessing Creativity in AI Model Design (MIT Press, 2026).
A survey article in Science on neuroevolution in neuroscience.
A short summary article on neuroevolution.
A survey article in Nature Machine Intelligence.

Last modified: Sat Jul 12 16:13:27 CDT 2025