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: "correctness and performance for stateful chained network functions"
  Abstract: Network functions virtualization (NFV) allows operators to employ NF chains to realize custom policies, and dynamically add instances to meet demand or for failover. NFs maintain detailed per- and cross-flow state which needs careful management, especially during dynamic actions. Crucially, state management must: (1) ensure NF chain-wide correctness and (2) have good performance. To this end, we built \name, an NFV framework that leverages an external state store coupled with state management algorithms and metadata maintenance for correct operation even under a range of failures. Our evaluation shows that CHC can support ~10Gbps per-NF throughput and <0.6mus increase in median per-NF packet processing latency, and chain-wide correctness at little additional cost.

Connected through hyperedge HE-1 (induced by source paper "nfv platform design a survey"):
  with members:
    - "network service orchestration a survey"
    - "snf serverless network functions"
    - "nfvactor a resilient nfv system using the distributed actor model"
    - "sonata service programming and orchestration for virtualized software networks"
    - "lightbox full stack protected stateful middlebox at lightning speed"
    - "splitbox toward efficient private network function virtualization"
    - "network function virtualization state of the art and research challenges"

Connected through hyperedge HE-2 (induced by source paper "design of nfv platforms a survey"):
  with members:
    - "network service orchestration a survey"
    - "snf serverless network functions"
    - "nfvactor a resilient nfv system using the distributed actor model"
    - "sonata service programming and orchestration for virtualized software networks"
    - "lightbox full stack protected stateful middlebox at lightning speed"
    - "network function virtualization state of the art and research challenges"

Connected through hyperedge HE-3 (induced by source paper "constellation a high performance geo distributed middlebox framework"):
  with members:
    - "heavy hitter detection entirely in the data plane"
    - "moongen a scriptable high speed packet generator"

Connected through hyperedge HE-4 (induced by source paper "fault tolerance for service function chains"):
  with members:
    - "moongen a scriptable high speed packet generator"

Connected through hyperedge HE-5 (induced by source paper "snf serverless network functions"):
  with members:
    - "cloud programming simplified a berkeley view on serverless computing"
    - "occupy the cloud distributed computing for the 99"
    - "stratos a network aware orchestration layer for virtual middleboxes in clouds"

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)