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: "competitive and deterministic embeddings of virtual networks"
  Abstract: Network virtualization is an important concept to overcome the ossification of today's Internet as it facilitates innovation also in the network core and as it promises a more efficient use of the given resources and infrastructure. Virtual networks (VNets) provide an abstraction of the physical network: multiple VNets may cohabit the same physical network, but can be based on completely different protocol stacks (also beyond IP). One of the main challenges in network virtualization is the efficient admission control and embedding of VNets. The demand for virtual networks (e.g., for a video conference) can be hard to predict, and once the request is accepted, the specification / QoS guarantees must be ensured throughout the VNet's lifetime. This requires an admission control algorithm which only selects high-benefit VNets in times of scarce resources, and an embedding algorithm which realizes the VNet in such a way that the likelihood that future requests can be embedded as well is maximized. #R##N#This article describes a generic algorithm for the online VNet embedding problem which does not rely on any knowledge of the future VNet requests but whose performance is competitive to an optimal offline algorithm that has complete knowledge of the request sequence in advance: the so-called competitive ratio is, loosely speaking, logarithmic in the sum of the resources. Our algorithm is generic in the sense that it supports multiple traffic models, multiple routing models, and even allows for nonuniform benefits and durations of VNet requests.

Connected through hyperedge HE-1 (induced by source paper "robust online composition routing and nf placement for nfv enabled services"):
  with members:
    - "a virtual network customization framework for multicast services in nfv enabled core networks"
    - "near optimal online algorithms and fast approximation algorithms for resource allocation problems"
    - "distributed service function chaining"
    - "service function chaining resource allocation a survey"
    - "online admission control and embedding of service chains"
    - "scalable steiner tree for multicast communications in software defined networking"

Connected through hyperedge HE-2 (induced by source paper "placement and allocation of virtual network functions multi dimensional case"):
  with members:
    - "joint placement and allocation of virtual network functions with budget and capacity constraints"
    - "shortest path and maximum flow problems under service function chaining constraints"
    - "provably efficient algorithms for joint placement and allocation of virtual network functions"
    - "approximate and incremental network function placement"
    - "string submodular functions with curvature constraints"
    - "online admission control and embedding of service chains"
    - "maximizing sequence submodular functions and its application to online advertising"

Connected through hyperedge HE-3 (induced by source paper "np completeness and inapproximability of the virtual network embedding problem and its variants"):
  with members:
    - "fpt approximation algorithms for the virtual network embedding problem"
    - "virtual network embedding approximations leveraging randomized rounding"
    - "an approximation algorithm for path computation and function placement in sdns"
    - "specifying and placing chains of virtual network functions"
    - "subgraph isomorphism in planar graphs and related problems"

Connected through hyperedge HE-4 (induced by source paper "online admission control and embedding of service chains"):
  with members:
    - "on orchestrating virtual network functions in nfv"
    - "specifying and placing chains of virtual network functions"
    - "merlin a language for provisioning network resources"
    - "a nonmonotone analysis with the primal dual approach online routing of virtual circuits with unknown durations"

Connected through hyperedge HE-5 (induced by source paper "request complexity of vnet topology extraction dictionary based attacks"):
  with members:
    - "topology discovery of sparse random graphs with few participants"
    - "misleading stars what cannot be measured in the internet"

Connected through hyperedge HE-6 (induced by source paper "online multi commodity flow with high demands"):
  with members:
    - "approximation algorithms for covering packing integer programs"

Connected through hyperedge HE-7 (induced by source paper "online strategies for intra and inter provider service migration in virtual networks"):
  with members:
    - "on the benefit of virtualization strategies for flexible server allocation"
    - "generalized and resource efficient vnet embeddings with migrations"

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)