In providing coordination for distributed constraint solving of MAS
through dialogue-based approach, the basic clause expansion mechanism
of LCC has been extended to preserve the ranges of finite-domain
constraints specified on variables. This allows agents to restrict
rather than simply instantiate these constraints when interacting, thus
allowing a less rigid interaction. However, brittleness of the protocol
is still a problem especially when we are dealing with conflicting
mutual finite-domain constraints specified by the distributed agents.
Therefore, in this talk, our discussion is centred on how the
constraint handling effort is implemented, starting from the existing
work on maintaining the constraint space up to the further extension
that include implementation of constraint relaxation coordination task.