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: "for the grid and through the grid the role of power line communications in the smart grid"
  Abstract: Is Power Line Communications (PLC) a good candidate for Smart Grid applications? The objective of this paper is to address this important question. To do so we provide an overview of what PLC can deliver today by surveying its history and describing the most recent technological advances in the area. We then address Smart Grid applications as instances of sensor networking and network control problems and discuss the main conclusion one can draw from the literature on these subjects. The application scenario of PLC within the Smart Grid is then analyzed in detail. Since a necessary ingredient of network planning is modeling, we also discuss two aspects of engineering modeling that relate to our question. The first aspect is modeling the PLC channel through fading models. The second aspect we review is the Smart Grid control and traffic modeling problem which allows us to achieve a better understanding of the communications requirements. Finally, this paper reports recent studies on the electrical and topological properties of a sample power distribution network. Power grid topological studies are very important for PLC networking as the power grid is not only the information source \textit{but also} the information delivery system - a unique feature when PLC is used for the Smart Grid.

Connected through hyperedge HE-1 (induced by source paper "the secrecy capacity of gaussian mimo channels with finite memory full version"):
  with members:
    - "on the capacity of narrowband plc channels"
    - "principles of physical layer security in multiuser wireless networks a survey"
    - "full rank solutions for the mimo gaussian wiretap channel with an average power constraint"
    - "source channel coding theorems for the multiple access relay channel"
    - "private broadcasting over independent parallel channels"
    - "secured communication over frequency selective fading channels a practical vandermonde precoding"
    - "towards the secrecy capacity of the gaussian mimo wire tap channel the 2 2 1 channel"
    - "the capacity region of the degraded finite state broadcast channel"

Connected through hyperedge HE-2 (induced by source paper "making the grid truly smart autonomous system identification in modemless dc microgrids"):
  with members:
    - "transient stability guarantees for ad hoc dc microgrids"
    - "multiuser communication through power talk in dc microgrids"
    - "power talk for multibus dc microgrids creating and optimizing communication channels"
    - "modemless multiple access communications over powerlines for dc microgrid control"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"
    - "multi agent distributed optimization via inexact consensus admm"

Connected through hyperedge HE-3 (induced by source paper "assessing percolation threshold based on high order non backtracking matrices"):
  with members:
    - "spectral redemption in clustering sparse networks"
    - "rethinking information theory for mobile ad hoc networks"

Connected through hyperedge HE-4 (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"
    - "power talk in dc micro grids constellation design and error probability performance"

Connected through hyperedge HE-5 (induced by source paper "decision error probability in a two stage communication network for smart grids with imperfect data links"):
  with members:
    - "average error probability in wireless sensor networks with imperfect sensing and communication for different decision rules"
    - "models for the modern power grid"
    - "smart grid communications overview of research challenges solutions and standardization activities"

Connected through hyperedge HE-6 (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"
    - "power talk in dc micro grids constellation design and error probability performance"

Connected through hyperedge HE-7 (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"
    - "power talk in dc micro grids constellation design and error probability performance"

Connected through hyperedge HE-8 (induced by source paper "state of the art in power line communications from the applications to the medium"):
  with members:
    - "on efficiency and validity of previous homeplug mac performance analysis"
    - "a novel approach to the statistical modeling of wireline 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.NI(Networking and Internet Architecture)