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 "a constrained coding approach to error free half duplex relay networks"):
  Abstract: We show that the broadcast capacity of an infinite-depth tree-structured network of error-free half-duplex-constrained relays can be achieved using constrained coding at the source and symbol forwarding at the relays.

Includes members:
  Member "bits through deterministic relay cascades with half duplex constraint":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "capacity of the two hop half duplex relay channel")
  Member "energy delay considerations in coded packet flows":
    also connected through other hyperedges:
      (none)
  Member "virtual full duplex wireless communication via rapid on off division duplex":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "compressed neighbour discovery using sparse kerdock matrices")
  Member "neighbor discovery for wireless networks via compressed sensing":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "sparse activity detection for massive connectivity")
  Member "capacity for half duplex line networks with two sources":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "capacity of gaussian channels with duty cycle and power constraints")

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.IT(Information Theory)