human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "incentive compatible two player cake cutting"
  Abstract: We characterize methods of dividing a cake between two bidders in a way that is incentive-compatible and Pareto-efficient. In our cake cutting model, each bidder desires a subset of the cake (with a uniform value over this subset), and is allocated some subset. Our characterization proceeds via reducing to a simple one-dimensional version of the problem, and yields, for example, a tight bound on the social welfare achievable.

Connected through hyperedge HE-1 (induced by source paper "truthful fair division without free disposal"):
  with members:
    - "on the complexity of chore division"
    - "deterministic strategyproof and fair cake cutting"
    - "a discrete and bounded envy free cake cutting protocol for any number of agents"
    - "a discrete and bounded envy free cake cutting protocol for four agents"
    - "cake cutting algorithms for piecewise constant and piecewise uniform valuations"
    - "truthful fair division"

Connected through hyperedge HE-2 (induced by source paper "fair cake cutting in practice"):
  with members:
    - "truthful fair division without free disposal"
    - "deterministic strategyproof and fair cake cutting"
    - "an algorithmic framework for strategic fair division"
    - "information theoretic cutting of a cake"
    - "online cake cutting"

Connected through hyperedge HE-3 (induced by source paper "communication complexity of cake cutting"):
  with members:
    - "consensus halving is ppa complete"
    - "the query complexity of cake cutting"
    - "combinatorial auctions do need modest interaction"
    - "a discrete and bounded envy free cake cutting protocol for any number of agents"
    - "waste makes haste bounded time algorithms for envy free cake cutting with free disposal"
    - "hardness results for consensus halving"
    - "communication complexity for algorithm designers"
    - "welfare maximization with limited interaction"

Connected through hyperedge HE-4 (induced by source paper "deterministic strategyproof and fair cake cutting"):
  with members:
    - "a discrete and bounded envy free cake cutting protocol for any number of agents"
    - "better strategyproof mechanisms without payments or prior an analytic approach"
    - "cake cutting algorithms for piecewise constant and piecewise uniform valuations"
    - "truthful fair division"

Connected through hyperedge HE-5 (induced by source paper "nash social welfare approximation for strategic agents"):
  with members:
    - "convex program duality fisher markets and nash social welfare"
    - "a discrete and bounded envy free cake cutting protocol for four agents"
    - "an algorithmic framework for strategic fair division"
    - "fair allocation without trade"
    - "truthful fair division"
    - "nash equilibria in fisher market"
    - "on allocating goods to maximize fairness"

Connected through hyperedge HE-6 (induced by source paper "a discrete and bounded envy free cake cutting protocol for any number of agents"):
  with members:
    - "a discrete and bounded envy free cake cutting protocol for four agents"
    - "cake cutting algorithms for piecewise constant and piecewise uniform valuations"
    - "degrees of guaranteed envy freeness in finite bounded cake cutting protocols"

Connected through hyperedge HE-7 (induced by source paper "a discrete and bounded envy free cake cutting protocol for four agents"):
  with members:
    - "cake cutting algorithms for piecewise constant and piecewise uniform valuations"
    - "degrees of guaranteed envy freeness in finite bounded cake cutting protocols"

Connected through hyperedge HE-8 (induced by source paper "an algorithmic framework for strategic fair division"):
  with members:
    - "the query complexity of correlated equilibria"
    - "fair allocation without trade"
    - "truthful fair division"

Question: Please tell me which class the center node 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)