human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "no truthful mechanism can be better than n approximate for two natural problems"):
  Abstract: This work gives the first natural non-utilitarian problems for which the trivial $n$ approximation via VCG mechanisms is the best possible. That is, no truthful mechanism can be better than $n$ approximate, where $n$ is the number of agents. The problems are the min-max variant of shortest path and (directed) minimum spanning tree mechanism design problems. In these procurement auctions, agents own the edges of a network, and the corresponding edge costs are private. Instead of the total weight of the subnetwork, in the min-max variant we aim to minimize the maximum agent cost.

Includes members:
  Member "setting lower bounds on truthfulness":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "envy regret and social welfare loss")
  Member "the vcg mechanism for bayesian scheduling":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "on the nisan ronen conjecture for submodular valuations")
  Member "prior independent mechanisms for scheduling":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "the vickrey auction with a single duplicate bidder approximates the optimal revenue")
  Member "multi unit auctions beyond roberts":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "on the nisan ronen conjecture for submodular valuations")
  Member "a deterministic truthful ptas for scheduling related machines":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "on the nisan ronen conjecture for submodular valuations")
  Member "an improved randomized truthful mechanism for scheduling unrelated machines":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "on the nisan ronen conjecture for submodular valuations")
  Member "a characterization of 2 player mechanisms for scheduling":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "on the nisan ronen conjecture for submodular valuations")

Question: Please tell me which class the source paper belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.GT(Computer Science and Game Theory)