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: "response time and availability study of raft consensus in distributed sdn control plane"
  Abstract: Software defined networking (SDN) promises unprecedented flexibility and ease of network operations. While flexibility is an important factor when leveraging advantages of a new technology, critical infrastructure networks also have stringent requirements on network robustness and control plane delays. Robustness in the SDN control plane is realized by deploying multiple distributed controllers, formed into clusters for durability and fast-failover purposes. However, the effect of the controller clustering on the total system response time is not well investigated in current literature. Hence, in this work we provide a detailed analytical study of the distributed consensus algorithm RAFT, implemented in OpenDaylight and ONOS SDN controller platforms. In those controllers, RAFT implements the data-store replication, leader election after controller failures and controller state recovery on successful repairs. To evaluate its performance, we introduce a framework for numerical analysis of various SDN cluster organizations w.r.t. their response time and availability metrics. We use Stochastic Activity Networks for modeling the RAFT operations, failure injection and cluster recovery processes, and using real-world experiments, we collect the rate parameters to provide realistic inputs for a representative cluster recovery model. We also show how a fast rejuvenation mechanism for the treatment of failures induced by software errors can minimize the total response time experienced by the controller clients, while guaranteeing a higher system availability in the long-term.

Connected through hyperedge HE-1 (induced by source paper "bft protocols for heterogeneous resource allocations in distributed sdn control plane"):
  with members:
    - "scalable byzantine consensus via hardware assisted secret sharing"
    - "morph an adaptive framework for efficient and byzantine fault tolerant sdn control plane"
    - "dynamic switch controller association and control devolution for sdn systems"

Connected through hyperedge HE-2 (induced by source paper "p4bft hardware accelerated byzantine resilient network control plane"):
  with members:
    - "bft protocols for heterogeneous resource allocations in distributed sdn control plane"
    - "morph an adaptive framework for efficient and byzantine fault tolerant sdn control plane"
    - "paxos made switch y"

Connected through hyperedge HE-3 (induced by source paper "software defined networks based smart grid communication a comprehensive survey"):
  with members:
    - "software defined microgrid control for resilience against cyber attacks"
    - "enabling hard service guarantees in software defined smart grid infrastructures"
    - "survey on network virtualization hypervisors for software defined networking"
    - "an iot architecture for wide area measurement systems a virtualized pmu based approach"
    - "iot cloud based distribution system state estimation virtual objects and context awareness"
    - "network function virtualization state of the art and research challenges"
    - "software defined optical networks sdons a comprehensive survey"
    - "smart grid communications overview of research challenges solutions and standardization activities"

Connected through hyperedge HE-4 (induced by source paper "impact of adaptive consistency on distributed sdn applications an empirical study"):
  with members:
    - "dynamic switch controller association and control devolution for sdn systems"
    - "a clustering based consistency adaptation strategy for distributed sdn controllers"
    - "towards adaptive state consistency in distributed sdn control plane"
    - "software defined networking a comprehensive survey"

Connected through hyperedge HE-5 (induced by source paper "morph an adaptive framework for efficient and byzantine fault tolerant sdn control plane"):
  with members:
    - "dynamic switch controller association and control devolution for sdn systems"
    - "towards adaptive state consistency in distributed sdn control plane"
    - "trusdn bootstrapping trust in cloud network infrastructure"

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)