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: "scalability and resilience of software defined networking an overview"
  Abstract: Software-Defined Networking (SDN) allows to control the available network resources by an intelligent and centralized authority in order to optimize traffic flows in a flexible manner. However, centralized control may face scalability issues when the network size or the number of traffic flows increases. Also, a centralized controller may form a single point of failure, thereby affecting the network resilience. #R##N#This article provides an overview of SDN that focuses on (1) scalability concerning the increased control overhead faced by a central controller, and (2) resiliency in terms of protection against controller failure, network topology failure and security in terms of malicious attacks.

Connected through hyperedge HE-1 (induced by source paper "qoe management of multimedia streaming services in future networks a tutorial and survey"):
  with members:
    - "5g network slicing using sdn and nfv a survey of taxonomy architectures and future challenges"
    - "a novel qoe aware sdn enabled nfv based management architecture for future multimedia applications on 5g systems"
    - "mptcp meets fec supporting latency sensitive applications over heterogeneous networks"
    - "network slicing for 5g with sdn nfv concepts architectures and challenges"
    - "nfv and sdn key technology enablers for 5g networks"
    - "network slicing to enable scalability and flexibility in 5g mobile networks"
    - "balancing the migration of virtual network functions with replications in data centers"
    - "5g icn delivering icn services over 5g using network slicing"

Connected through hyperedge HE-2 (induced by source paper "software defined applications in cellular and optical networks"):
  with members:
    - "programming flows in dense mobile environments a multi user diversity perspective"
    - "system architecture and key technologies for 5g heterogeneous cloud radio access networks"
    - "renewable energy aware inter datacenter virtual machine migration over elastic optical networks"
    - "a survey of green networking research"

Connected through hyperedge HE-3 (induced by source paper "software defined optical networks sdons a comprehensive survey"):
  with members:
    - "survey on network virtualization hypervisors for software defined networking"
    - "network function virtualization state of the art and research challenges"
    - "fronthaul constrained cloud radio access networks insights and challenges"
    - "system architecture and key technologies for 5g heterogeneous cloud radio access networks"
    - "renewable energy aware inter datacenter virtual machine migration over elastic optical networks"
    - "software defined and virtualized future mobile and wireless networks a survey"
    - "wireless sensor network virtualization early architecture and research perspectives"
    - "software defined networking a comprehensive survey"

Connected through hyperedge HE-4 (induced by source paper "survey on network virtualization hypervisors for software defined networking"):
  with members:
    - "network function virtualization state of the art and research challenges"
    - "wireless sensor network virtualization a survey"
    - "nfv based gateways for virtualized wireless sensor networks a case study"
    - "software defined and virtualized future mobile and wireless networks a survey"
    - "software defined networking a comprehensive survey"
    - "nfv state of the art challenges and implementation in next generation mobile networks vepc"
    - "software defined networking state of the art and research challenges"
    - "disco distributed multi domain sdn controllers"

Connected through hyperedge HE-5 (induced by source paper "software defined optical access networks sdoans a comprehensive survey"):
  with members:
    - "network function virtualization state of the art and research challenges"
    - "wireless sensor network virtualization a survey"
    - "fronthaul constrained cloud radio access networks insights and challenges"
    - "system architecture and key technologies for 5g heterogeneous cloud radio access networks"
    - "renewable energy aware inter datacenter virtual machine migration over elastic optical networks"
    - "nfv state of the art challenges and implementation in next generation mobile networks vepc"
    - "group sparse beamforming for green cloud ran"
    - "information centric networking over sdn and openflow architectural aspects and experiments on the ofelia testbed"

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)