LCMAS 2003 Preliminary Version Dialogue Games for Inconsistent and Biased Information

A dialogue game is presented that describes coherent conversational sequences with inconsistent and biased information between agents at the speech act level. These types of information are represented with the use of a multi-valued logic based on a bilattice structure. This approach makes it possible to devise a dialogue game in which agents can deliberate their cognitive states with inconsistent and biased information. An example dialogue is analysed by describing: a) the agent’s cogni-tive state as a set of multi-valued theories, b) dialogue rules that define applicable communicative acts based on the agent’s cognitive state, and c) update rules that change the agent’s cognitive state as a result of communicative acts. We show that an example dialogue with biased and inconsistent information can be described with our dialogue game in a consistent manner.