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On Revenue Optimal Combinatorial Auctions - IFP Group at the ...

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Quantifying Efficiency Loss<br />

RSW by an alloc<strong>at</strong>ion rule π:<br />

[ ∑<br />

RSW(π, X; A) = E π A (X) ( ∑ ) ]<br />

X n .<br />

A∈A n∈A<br />

Maximum social welfare (MSW) (by an efficient alloc<strong>at</strong>ion):<br />

[<br />

( ∑ ) ]<br />

MSW(X; A) = E X n .<br />

max<br />

A∈A<br />

n∈A<br />

The RSW by an optimal alloc<strong>at</strong>ion ≤ MSW.

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