Line van den Berg, Forgetting agent awareness: a partial semantics approach, in: Proc. 4th conference on Women in Logic workshop (WiL), Paris (FR), (Sandra Alves, Sandra Kiefer, Ana Sokolova (eds), Proc. 4th conference on Women in Logic workshop (WiL), Paris (FR), 2020), pp18-21, 2020
Partial Dynamic Epistemic Logic allows agents to have different knowledge representations about the world through agent awareness. Agents use their own vocabularies to reason and talk about the world and raise their awareness when confronted with new vocabulary. Through raising awareness the vocabularies of agents are extended, suggesting there is a dual, inverse operator for forgetting awareness that decreases vocabularies. In this paper, we discuss such an operator. Unlike raising awareness, this operator may induce an abstraction on models that removes evidence while preserving conclusions. This is useful to better understand how agents with different knowledge representations communicate with each other, as they may forget the justifications that led them to their conclusions.