  The Multi-valued Action Reasoning System (MARS) is an automated value-based
ethical decision-making model for artificial agents (AI). Given a set of
available actions and an underlying moral paradigm, by employing MARS one can
identify the ethically preferred action. It can be used to implement and model
different ethical theories, different moral paradigms, as well as combinations
of such, in the context of automated practical reasoning and normative decision
analysis. It can also be used to model moral dilemmas and discover the moral
paradigms that result in the desired outcomes therein. In this paper, we give a
condensed description of MARS, explain its uses, and comparatively place it in
the existing literature.
