“…The participant then needs a methodology, which effectively solves the problem how to combine (merge) fragmental information pieces provided by its neighbours. This problem has been addressed repeatedly, for instance, in connection with probabilistic expert systems (Cowell et al, 2003), knowledge elicitation, (O'Hagan et al, 2006), cooperation of participants (Andrýsek et al, 2007;Kárný et al, 2007); etc. However, none of the existing solutions seems to be complete and automatic enough to be applied in the cooperation task concerned.…”