An overview of LCS research from 2020 to 2021
David Pätzel, Michael Heider, Alexander R. M. Wagner · Proceedings of the Genetic and Evolutionary Computation Conference Companion · 2021
The International Workshop on Learning Classifier Systems (IWLCS) is an annual workshop at the GECCO conference where new concepts and results regarding learning classifier systems (LCSs) are presented and discussed. One recurring part of the workshop agenda is a presentation that reviews and summarizes the advances made in the field over the last year; this is intended to provide an easy entry point to the most recent progress and achievements. The 2020 presentation was accompanied by a survey workshop paper, a practice which we hereby continue. We give an overview of all the LCS-related publications from 11 March 2020 to 10 March 2021. The 46 publications we review are grouped into seven overall topics: Formal theoretic advances, contributions to LCS-based multi-agent reinforcement learning, approaches to setting and adapting LCS hyperparameters, new LCS architectures and adaptations, LCS implementations, improvements to existing LCSs and applications of LCSs.