可退货在线租赁竞争分析及其风险回报模型

Competitive Analysis and Risk-Reward Model for Online Rental Problem with Canceling Buying-Permission

经典的在线租赁只考虑购买和租赁两种决策行为,当在线租赁方购买设备后,不允许退货。本文假设在线租赁方在选择购买设备后,如果觉得购买设备不划算,可以在任何时候花费一定的代价把设备退还给承租方。通过定义退货费用函数来刻画退货行为,本文提出了可退货在线租赁问题,它是经典在线租赁问题的扩展。利用传统的竞争分析方法设计了该问题的竞争策略,分析了策略的竞争性能,并证明该策略能达到竞争比下界(即是最优竞争策略)。同时,在风险回报竞争分析框架下,进一步讨论了上述问题,得到了给定预期和风险下收益最优的竞争策略。

The classical online rental problem only considers two options： buy or rent. This paper assumes that the buying-permission can be canceled, and proposes the online rental problem with canceling buying-permission. The proposed problem is a generalization of the classical online rental problem. Using the method of traditional competitive analysis, we design the optimal investment strategy for this problem. Moreover, we also give the optimal strategies under the risk-reward framework. These results can provide a basis for further constructing the framework of the online leasing problem based on contracts.