Motivated by markets for television advertising time-slots, we introduce a new combinatorial auction format, including a general method for approximating core-selecting payments for hard problems. Given the size and complexity of ad markets in practice, an enumerative XOR bidding language...

Information design in on-demand service platforms matters in applications such as taxi services, ride-hailing platforms, and freight exchanges. Displayed service delay information significantly affects platform revenues, leading users to balk or renege. Information design is crucial for...