One of the central challenges in online advertising is attribution, namely, assessing the contribution of individual advertiser actions including e-mails, display ads and search ads to eventual conversion. Several heuristics are used for attribution in practice; however, there is no formal...

Problem definition. Motivated by the debate around drivers' welfare in on-demand transportation, we propose a framework to evaluate current practices and also possible alternatives. We study a setting in which riders seek drivers and a platform facilitates such matches over the course of the...