human: Given a node-centered hypergraph: <hypergraph>, where nodes represent authors and hyperedges represent groups of authors who co-authored the same paper.

Details of the hypergraph:
Center node: "Optimal auction design for agents with hard valuation problems"
  Abstract: As traditional commerce moves on-line more business transactions will be mediated by software agents, and the ability of agent-mediated electronic marketplaces to efficiently allocate resources will be highly dependent on the complexity of the decision problems that agents face; determined in part by the structure of the marketplace, resource characteristics, and the nature of agents' local problems. We compare auction performance for agents that have hard local problems, and uncertain values for goods. Perhaps an agent must solve a hard optimization problem to value a good, or interact with a busy and expensive human expert. Although auction design cannot simplify the valuation problem itself, we show that good auction design can simplify meta-deliberation - providing incentives for the "right" agents to deliberate for the "right" amount of time. Empirical results for a particular cost-benefit model of deliberation show that an ascending-price auction will often support higher revenue and efficiency than other auction designs. The price provides agents with useful information about the value that other agents hold for the good.

Connected through hyperedge HE-1 (induced by source paper "i Bundle: an efficient ascending price bundle auction"):
  with members:
    - "Mechanism Design via Differential Privacy"
    - "Bundling equilibrium in combinatorial auctions"
    - "Combinatorial auctions for supply chain formation"
    - "Combinatorial Auction Design"
    - "AdSCHE: DESIGN OF AN AUCTION-BASED FRAMEWORK FOR DECENTRALIZED SCHEDULING"

Connected through hyperedge HE-2 (induced by source paper "Frugal path mechanisms"):
  with members:
    - "Mechanism Design via Differential Privacy"
    - "A New Look at Selfish Routing"

Connected through hyperedge HE-3 (induced by source paper "Vote elicitation: complexity and strategy-proofness"):
  with members:
    - "Universal voting protocol tweaks to make manipulation hard"
    - "On merging strategy-proofness"

Connected through hyperedge HE-4 (induced by source paper "On the choice of obtaining and disclosing the common value in auctions"):
  with members:
    - "Manipulating Information Providers Access to Information in Auctions"

Question: Please tell me which research area the center author belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science