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: "a simple characterization of strategic behaviors in broadcast channels"
  Abstract: In this letter, we consider the problem of resource allocation between two competing users sharing a binary symmetric broadcast channel. We model the interaction between autonomous selfish users in the resource allocation and analyze their strategic behavior in manipulating the allocation outcome. We analytically show that users will improve their performance (i.e., gain higher allocated rates) if they have more information about the strategy of the competing user.

Connected through hyperedge HE-1 (induced by source paper "broadcast channel games equilibrium characterization and a mimo mac bc game duality"):
  with members:
    - "spectrum leasing as an incentive towards uplink macrocell and femtocell cooperation"
    - "power allocation games in wireless networks of multi antenna terminals"
    - "weighted sum rate optimization for cognitive radio mimo broadcast channels"
    - "distributed power allocation with rate constraints in gaussian parallel interference channels"

Connected through hyperedge HE-2 (induced by source paper "a game theoretic model for the gaussian broadcast channel"):
  with members:
    - "power allocation games in wireless networks of multi antenna terminals"
    - "distributed power allocation with rate constraints in gaussian parallel interference channels"
    - "the water filling game in fading multiple access channels"

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.IT(Information Theory)