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: "poseidon mitigating interest flooding ddos attacks in named data networking"
  Abstract: Content-Centric Networking (CCN) is an emerging networking paradigm being considered as a possible replacement for the current IP-based host-centric Internet infrastructure. CCN focuses on content distribution, which is arguably not well served by IP. Named-Data Networking (NDN) is an example of CCN. NDN is also an active research project under the NSF Future Internet Architectures (FIA) program. FIA emphasizes security and privacy from the outset and by design. To be a viable Internet architecture, NDN must be resilient against current and emerging threats. This paper focuses on distributed denial-of-service (DDoS) attacks; in particular we address interest flooding, an attack that exploits key architectural features of NDN. We show that an adversary with limited resources can implement such attack, having a significant impact on network performance. We then introduce Poseidon: a framework for detecting and mitigating interest flooding attacks. Finally, we report on results of extensive simulations assessing proposed countermeasure.

Connected through hyperedge HE-1 (induced by source paper "expect more from the networking ddos mitigation by fitt in named data networking"):
  with members:
    - "information centric networking in the iot experiments with ndn in the wild"
    - "dos and ddos in named data networking"

Connected through hyperedge HE-2 (induced by source paper "bead best effort autonomous deletion in content centric networking"):
  with members:
    - "enabling correct interest forwarding and retransmissions in a content centric network"
    - "to nack or not to nack negative acknowledgments in information centric networking"
    - "interest based access control for content centric networks"
    - "cost aware caching optimizing cache provisioning and object placement in icn"
    - "network layer trust in named data networking"
    - "dos and ddos in named data networking"

Connected through hyperedge HE-3 (induced by source paper "to nack or not to nack negative acknowledgments in information centric networking"):
  with members:
    - "network layer trust in named data networking"
    - "dos and ddos in named data networking"

Connected through hyperedge HE-4 (induced by source paper "covert ephemeral communication in named data networking"):
  with members:
    - "backscatter from the data plane threats to stability and security in information centric network infrastructure"
    - "andana anonymous named data networking application"
    - "ephpub toward robust ephemeral publishing"

Connected through hyperedge HE-5 (induced by source paper "backscatter from the data plane threats to stability and security in information centric network infrastructure"):
  with members:
    - "distributed denial of service is a scalability problem"
    - "dos and ddos in named data networking"

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)