In the Name-Your-Own-Price (NYOP) auction, the spread of bidding information among buyers is incredibly important for both buyers and sellers. However, the impact of hub nodes on the spread of bidding information is less investigated. In this research, we proposed a directed distance index, and used it to explore the roles of hub nodes during an NYOP auction. The results showed significant impacts of hub nodes on buyers’ behaviors and seller profits, but the impacts highly depend on the fading speed of information. When information fades fast, the hub nodes should be more valued to increase buyers’ bidding intention and make them bid more wisely. Seller’s profits will also be increased. While information fades slow, the hub nodes and the regular nodes should be approximately valued. Moreover, we explored the case of sharing failed bids, and found that the roles of hub nodes become more salient when buyers are more willing to share the failed bids.

中文翻译：

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Hub节点对Name-Your-Own-Price拍卖传播的影响

在 Name-Your-Own-Price (NYOP) 拍卖中，在买家之间传播出价信息对于买卖双方都非常重要。然而，枢纽节点对投标信息传播的影响研究较少。在这项研究中，我们提出了一个有向距离指数，并用它来探索中心节点在 NYOP 拍卖中的作用。结果表明，枢纽节点对买方行为和卖方利润的影响显着，但影响很大程度上取决于信息的衰减速度。当信息快速消退时，应该更加重视枢纽节点，以增加买家的竞价意愿，使他们更明智地竞价。卖方的利润也会增加。虽然信息消退缓慢，但中心节点和常规节点应该是近似值的。此外，我们探讨了共享失败投标的案例，