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: "implementation of virtual network function chaining through segment routing in a linux based nfv infrastructure"
  Abstract: In this paper, we first introduce the NFV architecture and the use of IPv6 Segment Routing (SRv6) network programming model to support Service Function Chaining in a NFV scenario. We describe the concepts of SR-aware and SR-unaware Virtual Network Functions (VNFs). The detailed design of a network domain supporting VNF chaining through the SRv6 network programming model is provided. The operations to support SR-aware and SR-unaware VNFs are described at an architectural level and in particular we propose a solution for SR-unaware VNFs hosted in a NFV node. The proposed solution has been implemented for a Linux based NFV host and the software is available as Open Source. Finally, a methodology for performance analysis of the implementation of the proposed mechanisms is illustrated and preliminary performance results are given.

Connected through hyperedge HE-1 (induced by source paper "srperf a performance evaluation framework for ipv6 segment routing"):
  with members:
    - "segment routing a comprehensive survey of research activities standardization efforts and implementation results"
    - "an efficient linux kernel implementation of service function chaining for legacy vnfs based on ipv6 segment routing"
    - "traffic engineering with segment routing sdn based architectural design and open source implementation"

Connected through hyperedge HE-2 (induced by source paper "segment routing a comprehensive survey of research activities standardization efforts and implementation results"):
  with members:
    - "srperf a performance evaluation framework for ipv6 segment routing"
    - "an efficient linux kernel implementation of service function chaining for legacy vnfs based on ipv6 segment routing"
    - "node constrained traffic engineering theory and applications"
    - "sdn architecture and southbound apis for ipv6 segment routing enabled wide area networks"
    - "flexible failure detection and fast reroute using ebpf and srv6"
    - "leveraging ebpf for programmable network functions with ipv6 segment routing"
    - "centrality based middlepoint selection for traffic engineering with segment routing"
    - "control exchange points providing qos enabled end to end services via sdn based inter domain routing orchestration"

Connected through hyperedge HE-3 (induced by source paper "joint reliability aware and cost efficient path allocation and vnf placement using sharing scheme"):
  with members:
    - "optimal virtual network function placement in multi cloud service function chaining architecture"
    - "on the trade off between computational load and reliability for network function virtualization"
    - "distributed service function chaining"
    - "an approximation algorithm for path computation and function placement in sdns"
    - "service chain and virtual network embeddings approximations using randomized rounding"

Connected through hyperedge HE-4 (induced by source paper "an efficient linux kernel implementation of service function chaining for legacy vnfs based on ipv6 segment routing"):
  with members:
    - "segment routing a comprehensive survey of research activities standardization efforts and implementation results"

Connected through hyperedge HE-5 (induced by source paper "joint failure recovery fault prevention and energy efficient resource management for real time sfc in fog supported sdn"):
  with members:
    - "optimal virtual network function placement in multi cloud service function chaining architecture"
    - "distributed service function chaining"
    - "joint energy efficient and qos aware path allocation and vnf placement for service function chaining"
    - "an approximation algorithm for path computation and function placement in sdns"
    - "fog computing based radio access networks issues and challenges"
    - "service chain and virtual network embeddings approximations using randomized rounding"
    - "fog computing focusing on mobile users at the edge"

Connected through hyperedge HE-6 (induced by source paper "distributed function chaining with anycast routing"):
  with members:
    - "distributed service function chaining"

Connected through hyperedge HE-7 (induced by source paper "leveraging ebpf for programmable network functions with ipv6 segment routing"):
  with members:
    - "software defined networking a comprehensive survey"

Connected through hyperedge HE-8 (induced by source paper "joint energy efficient and qos aware path allocation and vnf placement for service function chaining"):
  with members:
    - "optimal virtual network function placement in multi cloud service function chaining architecture"
    - "distributed service function chaining"
    - "an approximation algorithm for path computation and function placement in sdns"
    - "service chain and virtual network embeddings approximations using randomized rounding"

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)