This paper intends to clarify the broad conceptual background of relational justice. Relational Justice (RJ) is defined as the justice produced through cooperative behavior, agreement, negotiation, or dialogue among actors in a post-conflict situation. We found concepts stemming from at least thirty different fields, going from behavioral sciences (neurology, brain sciences, primatology, social psychology, etc.) to criminology, jurisprudence, and philosophy. One of these contributing fields is Artificial Intelligence (AI), which uses several techniques to grasp the practical knowledge of negotiators and mediators and builds tools to support both negotiation and mediation processes. However, contrary to the legal ontologies field, there are no ontologies of Relational Justice yet representing the conceptual richness of the domain
