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: "netscatter enabling large scale backscatter networks"
  Abstract: We present the first wireless protocol that scales to hundreds of concurrent transmissions from backscatter devices. Our key innovation is a distributed coding mechanism that works below the noise floor, operates on backscatter devices and can decode all the concurrent transmissions at the receiver using a single FFT operation. Our design addresses practical issues such as timing and frequency synchronization as well as the near-far problem. We deploy our design using a testbed of backscatter hardware and show that our protocol scales to concurrent transmissions from 256 devices using a bandwidth of only 500 kHz. Our results show throughput and latency improvements of 14--62x and 15--67x over existing approaches and 1--2 orders of magnitude higher transmission concurrency.

Connected through hyperedge HE-1 (induced by source paper "towards flexible wireless charging for medical implants using distributed antenna system"):
  with members:
    - "living iot a flying wireless platform on live insects"
    - "lora backscatter enabling the vision of ubiquitous connectivity"
    - "powering the next billion devices with wi fi"

Connected through hyperedge HE-2 (induced by source paper "joint frequency and phase modulation for backscatter tag assisted vehicular positioning"):
  with members:
    - "inference from randomized transmissions by many backscatter sensors"
    - "ambient backscatter communications a contemporary survey"
    - "millimeter wave vehicular communication to support massive automotive sensing"
    - "wirelessly powered backscatter communication networks modeling coverage and capacity"

Connected through hyperedge HE-3 (induced by source paper "reliable wide area backscatter via channel polarization"):
  with members:
    - "lora backscatter enabling the vision of ubiquitous connectivity"
    - "list decoding of polar codes"
    - "channel polarization a method for constructing capacity achieving codes for symmetric binary input memoryless channels"

Connected through hyperedge HE-4 (induced by source paper "living iot a flying wireless platform on live insects"):
  with members:
    - "lora backscatter enabling the vision of ubiquitous connectivity"
    - "fm backscatter enabling connected cities and smart fabrics"
    - "inter technology backscatter towards internet connectivity for implanted devices"

Connected through hyperedge HE-5 (induced by source paper "secure data timestamping in synchronization free lorawan"):
  with members:
    - "lora backscatter enabling the vision of ubiquitous connectivity"
    - "one hop out of band control planes for low power multi hop wireless networks"

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)