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: "the internet of things new interoperability management and security challenges"
  Abstract: The Internet of Things (IoT) brings connectivity to about every objects found in the physical space. It extends connectivity to everyday objects. From connected fridges, cars and cities, the IoT creates opportunities in numerous domains. However, this increase in connectivity creates many prominent challenges. This paper provides a survey of some of the major issues challenging the widespread adoption of the IoT. Particularly, it focuses on the interoperability, management, security and privacy issues in the IoT. It is concluded that there is a need to develop a multifaceted technology approach to IoT security, management, and privacy.

Connected through hyperedge HE-1 (induced by source paper "performance evaluation of multiparty authentication in 5g iiot environments"):
  with members:
    - "dynamic multiparty authentication of data analytics services within cloud environments"
    - "towards in transit analytics for industry 4 0"
    - "towards an understanding of microservices"

Connected through hyperedge HE-2 (induced by source paper "perils of zero interaction security in the internet of things"):
  with members:
    - "on the secrecy of publicly observable biometric features security properties of gait for mobile device pairing"
    - "survey and systematization of secure device pairing"
    - "re run repeat reproduce reuse replicate transforming code into scientific contributions"
    - "demo of bandana body area network device to device authentication using natural gait"
    - "walk unlock zero interaction authentication protected with multi modal gait biometrics"
    - "sound proof usable two factor authentication based on ambient sound"
    - "context aware computing for the internet of things a survey"

Connected through hyperedge HE-3 (induced by source paper "is fragmentation a threat to the success of the internet of things"):
  with members:
    - "semantic gateway as a service architecture for iot interoperability"
    - "internet of things iot a vision architectural elements and future directions"

Connected through hyperedge HE-4 (induced by source paper "backscatter communications for the internet of things a stochastic geometry approach"):
  with members:
    - "backscatter communications for internet of things theory and applications"
    - "multistatic scatter radio sensor networks for extended coverage"
    - "joint uplink and downlink coverage analysis of cellular based rf powered iot network"
    - "backscatter communications for wireless powered sensor networks with collision resolution"
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "downlink and uplink decoupling in two tier heterogeneous networks with multi antenna base stations"
    - "modulation in the air backscatter communication over ambient ofdm carrier"
    - "waveform design for wireless power transfer"

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)