Definition of VCG
I'm doing problem 5b and straggling to understand the definition of VCG.
VCG should be a truthful mechanism were the payment for all players (including non winners) is:
h(b-i) - sumj!=ivi(w)
where:
w is the optimal allocation
b-i is the payments of players who aren't i
vi is the willing to pay value of i
h is a function corellated to b-i
1.Is that the correct definition?
2.h can be anything, like h = sizeof(vi)?
3. Does 5b should be proven for any h?