Abstract of paper: We develop a general method for cost-sharing that is approximately budget balanced and group strategyproof. We use our method to design cost sharing mechanisms for two NPcomplete problems: metric facility location, and single source rent-or-buy network design. Both mechanisms are competitive, group strategyproof and recover a constant fraction of the cost. For the facility location game our cost-sharing method recovers a 1/3rd of the total cost, while in the network design game the cost shares pay for a 1/15 fraction of the cost of the solution.
No familiarity with the game theory and mechanism design is assumed. All of the terminology will be defined and explained in the talk.