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: "pmsr poor man s segment routing a minimalistic approach to segment routing and a traffic engineering use case"
  Abstract: The current specification of the Segment Routing (SR) architecture requires enhancements to the intra-domain routing protocols (e.g. OSPF and IS-IS) so that the nodes can advertise the Segment Identifiers (SIDs). We propose a simpler solution called PMSR (Poor Man's Segment Routing), that does not require any enhancement to routing protocol. We compare the procedures of PMSR with traditional SR, showing that PMSR can reduce the operation and management complexity. We analyze the set of use cases in the current SR drafts and we claim that PMSR can support the large majority of them. Thanks to the drastic simplification of the Control Plane, we have been able to develop an Open Source prototype of PMSR. In the second part of the paper, we consider a Traffic Engineering use case, starting from a traditional flow assignment optimization problem which allocates hop-by-hop paths to flows. We propose a SR path assignment algorithm and prove that it is optimal with respect to the number of segments allocated to a flow.

Connected through hyperedge HE-1 (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"
    - "implementation of virtual network function chaining through segment routing in a linux based nfv infrastructure"

Connected through hyperedge HE-2 (induced by source paper "sdn architecture and southbound apis for ipv6 segment routing enabled wide area networks"):
  with members:
    - "segment routing a comprehensive survey of research activities standardization efforts and implementation results"
    - "hybrid ip sdn networking open implementation and experiment management tools"
    - "traffic engineering with segment routing sdn based architectural design and open source implementation"
    - "software defined networking a comprehensive survey"

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)