Cognitive Transactions - A Communication Model

Whenever a person gets lost and there is no way to access stored spatial information, e.g. in the form of maps, they need to rely on the knowledge of other humans instead. This situation can be modelled as a communication setting where a person lacking spatial knowledge requests information from a knowledgeable source. The result are cognitive transactions in which information over various levels of detail (LoD) is negotiated. The overall goal is to agree on a shared spatial representation with equal semantics, i.e., common ground. We present a communication model that accounts for establishing common ground between two agents. The agents use a modified "wayfinding choreme" language and special signals to negotiate the LoD. Findings of a case study were used to verify and refine our work.

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