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: "isn t hybrid arq sufficient"
  Abstract: In practical systems, reliable communication is often accomplished by coding at different network layers. We question the necessity of this approach and examine when it can be beneficial. Through conceptually simple probabilistic models (based on coin tossing), we argue that multicast scenarios and protocol restrictions may make concatenated multi-layer coding preferable to physical layer coding alone, which is mostly not the case in point-to-point communications.

Connected through hyperedge HE-1 (induced by source paper "status updates through multicast networks"):
  with members:
    - "timely updates over an erasure channel"
    - "status updates through m g 1 1 queues with harq"
    - "update or wait how to keep your data fresh"
    - "optimizing data freshness throughput and delay in multi server information update systems"

Connected through hyperedge HE-2 (induced by source paper "status updates through m g 1 1 queues with harq"):
  with members:
    - "age of information in the presence of error"
    - "age of information the gamma awakening"
    - "on the age of information in status update systems with packet management"

Connected through hyperedge HE-3 (induced by source paper "timely updates over an erasure channel"):
  with members:
    - "update or wait how to keep your data fresh"
    - "on the age of information in status update systems with packet management"

Connected through hyperedge HE-4 (induced by source paper "optimizing transmission lengths for limited feedback with non binary ldpc examples"):
  with members:
    - "protograph based raptor like ldpc codes"
    - "reliability output decoding of tail biting convolutional codes"
    - "a hybrid arq scheme based on polar codes"
    - "feedback communication systems with limitations on incremental redundancy"
    - "polar coded harq scheme with chase combining"
    - "a rate compatible sphere packing analysis of feedback coding with limited retransmissions"

Connected through hyperedge HE-5 (induced by source paper "on locality of generalized reed muller codes over the broadcast erasure channel"):
  with members:
    - "reed muller codes achieve capacity on erasure channels"
    - "binary systematic network coding for progressive packet decoding"
    - "reed muller codes achieve capacity on the binary erasure channel under map decoding"
    - "novel polynomial basis and its application to reed solomon erasure codes"
    - "network coding meets tcp"

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)