GT-Bidding: Group Trust Model of P2P Network Based on Bidding

Algorithm 2

Selection of guarantee service peer.

	Input: sequence of service peer {Service}, request peer Ri, and its group id Gi
	Output: a set of guarantee sequence for each service peer
(1)	for each Sj ⊆ {Service}
(2)	if (Gi =  = Gj) //Gi is the group of Ri
(3)	⟵ formulas (1) and (2)
(4)	else
(5)	⟵ formulas (4) and (5)
(6)	end if
(7)	if () //α is the threshold of trust
(8)	{
(9)	⟶ Application (Sj|Gj, Ri|Gi)
(10)	⟶ Response () // is the guarantee peer
(11)	if (RGR > β) //β is the threshold
(12)	Notify (Sj|Gj, )
(13)	else
(14)	break
(15)	end if
(16)	}
(17)	end if
(18)	end for