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: "amplification and drdos attack defense a survey and new perspectives"
  Abstract: The severity of amplification attacks has grown in recent years. Since 2013 there have been at least two attacks which involved over 300Gbps of attack traffic. This paper offers an analysis of these and many other amplification attacks. We compare a wide selection of different proposals for detecting and preventing amplification attacks, as well as proposals for tracing the attackers. Since source IP spoofing plays an important part in almost all of the attacks mentioned, a survey on the state of the art in spoofing defenses is also presented. This work acts as an introduction into amplification attacks and source IP address spoofing. By combining previous works into a single comprehensive bibliography, and with our concise discussion, we hope to prevent redundant work and encourage others to find practical solutions for defending against future amplification attacks.

Connected through hyperedge HE-1 (induced by source paper "iot behavioral monitoring via network traffic analysis"):
  with members:
    - "machine learning ddos detection for consumer internet of things devices"
    - "peek a boo i see your smart home activities even encrypted"
    - "n baiot network based detection of iot botnet attacks using deep autoencoders"
    - "iot device fingerprint using deep learning"
    - "cleartext data transmissions in consumer iot medical devices"
    - "a smart home is no castle privacy vulnerabilities of encrypted iot traffic"
    - "iot sentinel demo automated device type identification for security enforcement in iot"
    - "idiot securing the internet of things like it s 1994"

Connected through hyperedge HE-2 (induced by source paper "a reproducibility study of ip spoofing detection in inter domain traffic"):
  with members:
    - "the dagstuhl beginners guide to reproducibility for experimental networking research"
    - "cair using formal languages to study routing leaking and interception in bgp"

Connected through hyperedge HE-3 (induced by source paper "ddos hide seek on the effectiveness of a booter services takedown"):
  with members:
    - "a long way to the top significance structure and stability of internet top lists"
    - "stress testing the booters understanding and undermining the business of ddos services"

Connected through hyperedge HE-4 (induced by source paper "carrier grade anomaly detection using time to live header information"):
  with members:
    - "scanning the ipv6 internet towards a comprehensive hitlist"
    - "moongen a scriptable high speed packet generator"

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)