基于信誉感知的网格资源交易机制

Reputation-aware grid resource transaction mechanism

鉴于在网格环境的资源市场交易中,资源提供者完全掌握资源的信息状况,而资源使用者只掌握资源提供者对资源的描述信息,存在严重的信息不对称问题可能导致非诚信交易,使资源使用者蒙受损失.由此提出网格资源市场中基于信誉感知的集合竞价机制和连续双向拍卖机制:给资源提供者赋予一定的信誉值,以反映资源的可靠性,资源使用者可以根据信誉值判断是否交易.模拟实验结果表明,基于信誉感知的集合竞价机制能够显著提高总的成交量而降低资源使用者的损失;基于信誉感知的连续双向拍卖机制虽然降低了成交次数,但也能够使资源使用者的损失明显减少.

In grid-based resource market trades, there is a severe information asymmetry problem between resource providers and resource users. Resource providers hold all the resource information, while users can only access resource information submitted by the providers. So in this situation transactions may be unfair and result in losses for users. A solution to the problem was proposed, which introduced reputation to the aggregate market mechanism and the double auction mechanism： a reputation value was used to reflect the reliability of a resource; the users decided whether to use the resource in terms of the value. The simulation result shows that the reputation-aware aggregate market mechanism can increase the total deal amount and decrease loss on the users; the reputation-aware double auction mechanism can reduce number of deals but loss on the users may be reduced significantly.