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: "power talk in dc micro grids constellation design and error probability performance"
  Abstract: Power talk is a novel concept for communication among units in a Micro Grid (MG), where information is sent by using power electronics as modems and the common bus of the MG as a communication medium. The technique is implemented by modifying the droop control parameters from the primary control level. In this paper, we consider power talk in a DC MG and introduce a channel model based on Thevenin equivalent. The result is a channel whose state that can be estimated by both the transmitter and the receiver. Using this model, we present design of symbol constellations of arbitrary order and analyze the error probability performance. Finally, we also show how to design adaptive modulation in the proposed communication framework, which leads to significant performance benefits.

Connected through hyperedge HE-1 (induced by source paper "modemless multiple access communications over powerlines for dc microgrid control"):
  with members:
    - "multiuser communication through power talk in dc microgrids"
    - "power talk for multibus dc microgrids creating and optimizing communication channels"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"
    - "for the grid and through the grid the role of power line communications in the smart grid"

Connected through hyperedge HE-2 (induced by source paper "anti jamming strategy for distributed microgrid control based on power talk communication"):
  with members:
    - "multiuser communication through power talk in dc microgrids"
    - "on the impact of wireless jamming on the distributed secondary microgrid control"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"

Connected through hyperedge HE-3 (induced by source paper "power talk for multibus dc microgrids creating and optimizing communication channels"):
  with members:
    - "multiuser communication through power talk in dc microgrids"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"
    - "for the grid and through the grid the role of power line communications in the smart grid"

Connected through hyperedge HE-4 (induced by source paper "secure and robust authentication for dc microgrids based on power talk communication"):
  with members:
    - "multiuser communication through power talk in dc microgrids"
    - "on the impact of wireless jamming on the distributed secondary microgrid control"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"

Connected through hyperedge HE-5 (induced by source paper "multiuser communication through power talk in dc microgrids"):
  with members:
    - "power talk how to modulate data over a dc micro grid bus using power electronics"
    - "for the grid and through the grid the role of power line communications in the smart grid"

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)