The Geo-collaboration term is applied to collaborative activities in which data
and models used by participants are strongly related to geographical locations.
There are many scenarios in which Geo-collaboration is used to support a
collaborative decision making process. Some of these scenarios are city
planning, developing evacuations for emergencies, and developing nature
protecting projects. In these situations experts with various backgrounds and
knowledge contribute with their opinions and viewpoints. Ideally, the final
solution should combine all these viewpoints and all specialists should agree
on it. Although the literature reports about procedures for combining decision
makers' opinions whose goals might be in contradiction, there are no systems
which explicitly support them to reach consensus over a final joint solution.
We present a tool which supports this process by allowing experts first, to
propose their individual point of view, modeled in the form of beliefs
according to the Dempster-Schafer evidence theory. Then, the tool lets
participants visualize all proposals, discussing and combining them in a
suitable consensual way.