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: "opportunistic content delivery in fading broadcast channels"
  Abstract: We consider content delivery over fading broadcast channels. A server wants to transmit K files to K users, each equipped with a cache of finite size. Using the coded caching scheme of Maddah-Ali and Niesen, we design an opportunistic delivery scheme where the long-term sum content delivery rate scales with K the number of users in the system. The proposed delivery scheme combines superposition coding together with appropriate power allocation across sub-files intended to different subsets of users. We analyze the long-term average sum content delivery rate achieved by two special cases of our scheme: a) a selection scheme that chooses the subset of users with the largest weighted rate, and b) a baseline scheme that transmits to K users using the scheme of Maddah-Ali and Niesen. We prove that coded caching with appropriate user selection is scalable since it yields a linear increase of the average sum content delivery rate.

Connected through hyperedge HE-1 (induced by source paper "multi antenna coded content delivery with caching a low complexity solution"):
  with members:
    - "a low complexity cache aided multi antenna content delivery scheme"
    - "adding transmitters dramatically boosts coded caching gains for finite file sizes"
    - "cache aided content delivery over erasure broadcast channels"
    - "caching and coded delivery over gaussian broadcast channels for energy efficiency"
    - "edge caching wireless networks performance analysis and optimization"
    - "multi antenna interference management for coded caching"
    - "scalable content delivery with coded caching in multi antenna fading channels"
    - "on coded caching in the overloaded miso broadcast channel"

Connected through hyperedge HE-2 (induced by source paper "utility optimal scheduling for coded caching in general topologies"):
  with members:
    - "alpha fair coded caching"
    - "scalable content delivery with coded caching in multi antenna fading channels"
    - "physical layer schemes for wireless coded caching"
    - "multi antenna coded caching"
    - "noisy broadcast networks with receiver caching"
    - "wireless caching technical misconceptions and business barriers"
    - "wireless coded caching a topological perspective"
    - "fundamental limits of cache aided wireless bc interplay of coded caching and csit feedback"

Connected through hyperedge HE-3 (induced by source paper "decentralized multi antenna coded caching with cyclic exchanges"):
  with members:
    - "decentralized coded caching in wireless networks trade off between storage and latency"
    - "multi antenna coded caching"
    - "caching at the wireless edge design aspects challenges and future directions"
    - "multi server coded caching"
    - "hierarchical coded caching"
    - "online coded caching"
    - "coded caching with nonuniform demands"
    - "decentralized coded caching attains order optimal memory rate tradeoff"

Connected through hyperedge HE-4 (induced by source paper "optimization of heterogeneous coded caching"):
  with members:
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "alpha fair coded caching"
    - "benefits of cache assignment on degraded broadcast channels"
    - "cache aided content delivery over erasure broadcast channels"
    - "structural properties of uncoded placement optimization for coded delivery"
    - "noisy broadcast networks with receiver caching"
    - "on the coded caching delivery design over wireless networks"
    - "correlation aware distributed caching and coded delivery"

Connected through hyperedge HE-5 (induced by source paper "scalable content delivery with coded caching in multi antenna fading channels"):
  with members:
    - "on coded caching in the overloaded miso broadcast channel"
    - "multi antenna coded caching"
    - "wireless caching technical misconceptions and business barriers"
    - "a rate splitting strategy for massive mimo with imperfect csit"
    - "order optimal rate of caching and coded multicasting with random demands"
    - "fundamental limits of cache aided wireless bc interplay of coded caching and csit feedback"
    - "multi server coded caching"
    - "massive mimo for next generation wireless systems"

Connected through hyperedge HE-6 (induced by source paper "noisy broadcast networks with receiver caching"):
  with members:
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "on the optimality of separation between caching and delivery in general cache networks"
    - "cache aided content delivery over erasure broadcast channels"
    - "scalable content delivery with coded caching in multi antenna fading channels"
    - "on coded caching in the overloaded miso broadcast channel"
    - "multi antenna coded caching"
    - "information theoretic caching the multi user case"
    - "centralized coded caching for heterogeneous lossy requests"

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)