Abstract. A pair of ‘trust maps’ give a fine-grained view of an agent’s accumulated,
time-discounted belief that the enactment of commitments by another
agent will be in-line with what was promised, and that the observed agent will act
in a way that respects the confidentiality of previously passed information. The
structure of these maps is defined in terms of a categorisation of utterances and
the ontology. Various summary measures are then applied to these maps to give a
succinct view of trust....