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: "stringer balancing latency and resource usage in service function chain provisioning"
  Abstract: Network Functions Virtualization (NFV) enables telecommunications infrastructure providers to replace specialpurpose networking equipment with commodity servers running virtualized network functions (VNFs). A provider utilizing NFV faces the Service Function Chain (SFC) provisioning problem of assigning VNF instances to nodes in the physical infrastructure (e.g. datacenters), and routing Service Function Chains (sequences of functions required by customers, a.k.a. SFCs) in the physical network. The provider must balance competing goals of performance and resource usage. We present an approach to SFC provisioning, consisting of three elements. The first element is a fast and scalable round-robin heuristic. The second element is a Mixed Integer Programming (MIP) based approach. The third element is a queueing-theoretic model to estimate the average latency associated with any SFC provisioning solution. Our SFC provisioning system, called Stringer, allows providers to balance the conflicting goals of minimizing infrastructure resources and end-to-end latency for meeting their respective SLAs.

Connected through hyperedge HE-1 (induced by source paper "routing led placement of vnfs in arbitrary networks"):
  with members:
    - "femosaa feature guided and knee driven multi objective optimization for self adaptive software"
    - "evolutionary many objective optimization based on adversarial decomposition"
    - "optimal orchestration of virtual network functions"

Connected through hyperedge HE-2 (induced by source paper "impact of processing resource sharing on the placement of chained virtual network functions"):
  with members:
    - "dynamic and application aware provisioning of chained virtual security network functions"
    - "online admission control and embedding of service chains"
    - "specifying and placing chains of virtual network functions"
    - "research directions in network service chaining"

Connected through hyperedge HE-3 (induced by source paper "network slicing for service oriented networks under resource constraints"):
  with members:
    - "multi commodity flow with in network processing"
    - "distributed service function chaining"
    - "joint source relay design for full duplex mimo af relay systems"
    - "network function virtualization state of the art and research challenges"
    - "scalable routing in sdn enabled networks with consolidated middleboxes"

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)