标题： 最小化遗憾的项目选择 显示英文标题

标题： Regret-Minimizing Project Choice

摘要： 一个代理观察可用项目集并提出其中的一些，但不一定全部。 委托人从提出的项目集中选择一个或不选。 我们求解一种机制以使委托人的最坏情况遗憾最小化。 我们将单一项目环境（代理只能提出一个项目）与多项目环境（他可以提出多个项目）进行比较。 在两种环境中，如果代理提出一个项目，当委托人的收益足够高时，该项目肯定会被选中；否则，被选中的概率会随着代理的收益降低而减少。 在多项目环境中，代理通过提出多个项目获得的收益等于他单独提出每个项目所能获得的最大收益。 多项目环境通过提供比拒绝更好的备选方案，并更有效地向代理交付这一收益，优于单一项目环境。 显示英文摘要

摘要： An agent observes the set of available projects and proposes some, but not necessarily all, of them. A principal chooses one or none from the proposed set. We solve for a mechanism that minimizes the principal's worst-case regret. We compare the single-project environment in which the agent can propose only one project with the multiproject environment in which he can propose many. In both environments, if the agent proposes one project, it is chosen for sure if the principal's payoff is sufficiently high; otherwise, the probability that it is chosen decreases in the agent's payoff. In the multiproject environment, the agent's payoff from proposing multiple projects equals his maximal payoff from proposing each project alone. The multiproject environment outperforms the single-project one by providing better fallback options than rejection and by delivering this payoff to the agent more efficiently.