  Since 2015, the International Competition on Computational Models of
Argumentation (ICCMA) provides a systematic comparison of the different
algorithms for solving some classical reasoning problems in the domain of
abstract argumentation. This paper discusses the design of the Fourth
International Competition on Computational Models of Argumentation. We describe
the rules of the competition and the benchmark selection method that we used.
After a brief presentation of the competitors, we give an overview of the
results.
