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arXiv 1702.08533cs.GTcs.LG
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竞争的强盗:在竞争中学习

Competing Bandits: Learning under Competition

Microsoft Research(微软研究院);University of Pennsylvania(宾夕法尼亚大学);Tel Aviv University(特拉维夫大学)

Yishay Mansour, Aleksandrs Slivkins, Zhiwei Steven Wu

摘要:

大多数现代系统努力从与用户的交互中学习,许多系统参与探索:为了获取新信息而做出潜在的次优选择。我们开始研究探索和竞争之间的相互作用-这样的系统如何平衡学习的探索和用户的竞争。在这里,用户扮演着三个不同的角色:他们是产生收入的客户,他们是学习数据的来源,他们是在竞争系统中进行选择的自利代理人。在我们的模型中,我们考虑两个多臂强盗算法面临相同的强盗实例之间的竞争。用户一个接一个地到达,并在两种算法中进行选择,因此当且仅当选择了每种算法时,每种算法才能取得进展。我们问竞争是否以及在多大程度上激励采用更好的强盗算法。我们调查这个问题的几个模型的用户响应,因为我们不同的程度的合理性和竞争力的模型。我们的研究结果与经济学中一个被广泛研究的主题“竞争与创新”的关系密切相关。

英文摘要:

Most modern systems strive to learn from interactions with users, and many engage in exploration: making potentially suboptimal choices for the sake of acquiring new information. We initiate a study of the interplay between exploration and competition--how such systems balance the exploration for learning and the competition for users. Here the users play three distinct roles: they are customers that generate revenue, they are sources of data for learning, and they are self-interested agents which choose among the competing systems. In our model, we consider competition between two multi-armed bandit algorithms faced with the same bandit instance. Users arrive one by one and choose among the two algorithms, so that each algorithm makes progress if and only if it is chosen. We ask whether and to what extent competition incentivizes the adoption of better bandit algorithms. We investigate this issue for several models of user response, as we vary the degree of rationality and competitiveness in the model. Our findings are closely related to the "competition vs. innovation" relationship, a well-studied theme in economics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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