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: "a survey among network operators on bgp prefix hijacking"
  Abstract: BGP prefix hijacking is a threat to Internet operators and users. Several mechanisms or modifications to BGP that protect the Internet against it have been proposed. However, the reality is that most operators have not deployed them and are reluctant to do so in the near future. Instead, they rely on basic - and often inefficient - proactive defenses to reduce the impact of hijacking events, or on detection based on third party services and reactive approaches that might take up to several hours. In this work, we present the results of a survey we conducted among 75 network operators to study: (a) the operators' awareness of BGP prefix hijacking attacks, (b) presently used defenses (if any) against BGP prefix hijacking, (c) the willingness to adopt new defense mechanisms, and (d) reasons that may hinder the deployment of BGP prefix hijacking defenses. We expect the findings of this survey to increase the understanding of existing BGP hijacking defenses and the needs of network operators, as well as contribute towards designing new defense mechanisms that satisfy the requirements of the operators.

Connected through hyperedge HE-1 (induced by source paper "using bursty announcements for early detection of bgp routing anomalies"):
  with members:
    - "artemis neutralizing bgp hijacking within a minute"
    - "burstiness of intrusion detection process empirical evidence and a modeling approach"
    - "hijacking bitcoin routing attacks on cryptocurrencies"
    - "raptor routing attacks on privacy in tor"
    - "bgp security in partial deployment is the juice worth the squeeze"

Connected through hyperedge HE-2 (induced by source paper "a geometric approach for real time monitoring of dynamic large scale graphs as level graphs illustrated"):
  with members:
    - "a comprehensive survey of graph embedding problems techniques and applications"
    - "optimal approximate matrix product in terms of stable rank"
    - "on the hyperbolicity of small world and tree like random graphs"

Connected through hyperedge HE-3 (induced by source paper "artemis neutralizing bgp hijacking within a minute"):
  with members:
    - "heap reliable assessment of bgp hijacking attacks"
    - "ripki the tragic story of rpki deployment in the web ecosystem"
    - "bgp security in partial deployment is the juice worth the squeeze"

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)