Optimal Mechanism Design for Crowdfunding of Public Goods

Mechanisms for crowdfunding public goods are essential for ensuring that societies can collectively benefit from public goods. Unlike previous researches on crowdfunding for public goods, which focused on binary outcomes-either full provision or none at all, this paper proposes an auction framework to examine the partial provision of public goods, based on the funds raised, with the goal of maximizing the final investment amount. We develop truthful investment mechanisms that achieve the (approximate) optimal expected investment amount across different models, taking into account the number of agents.