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: "ubiquitous healthcare in wireless body area networks a survey"
  Abstract: Advances in wireless communication, system on chip and low power sensor nodes allowed realization of Wireless Body Area Network (WBAN). WBAN comprised of tiny sensors, which collect information of patient's vital signs and provide a real time feedback. In addition, WBAN also supports many applications including Ubiquitous HealthCare (UHC), entertainment, gaming, military, etc. UHC is required by elderly people to facilitate them with instant monitoring anywhere they move around. In this paper, different standards used in WBAN were also discussed briefly. Path loss in WBAN and its impact on communication was presented with the help of simulations, which were performed for different models of In-Body communication and different factors (such as, attenuation, frequency, distance etc) influencing path loss in On-Body communications.

Connected through hyperedge HE-1 (induced by source paper "wireless broadcast with short labelling"):
  with members:
    - "markovian model for broadcast in wireless body area networks"
    - "ban gzkp optimal zero knowledge proof based scheme for wireless body area networks"
    - "peak transmission rate resilient crosslayer broadcast for body area networks"
    - "finding the size of a radio network with short labels"
    - "total order reliable convergecast in wban"
    - "time vs information tradeoffs for leader election in anonymous trees"

Connected through hyperedge HE-2 (induced by source paper "markovian model for broadcast in wireless body area networks"):
  with members:
    - "ban gzkp optimal zero knowledge proof based scheme for wireless body area networks"
    - "peak transmission rate resilient crosslayer broadcast for body area networks"
    - "broadcast strategies and performance evaluation of ieee 802 15 4 in wireless body area networks wban"

Connected through hyperedge HE-3 (induced by source paper "efficient medium access arbitration among interfering wbans using latin rectangles"):
  with members:
    - "interference avoidance algorithm iaa for multi hop wireless body area network communication"
    - "socially optimal coexistence of wireless body area networks enabled by a non cooperative game"

Connected through hyperedge HE-4 (induced by source paper "dynamic channel access scheme for interference mitigation in relay assisted intra wbans"):
  with members:
    - "coexistence and interference mitigation for wireless body area networks improvements using on body opportunistic relaying"
    - "opportunistic relaying in wireless body area networks coexistence performance"

Connected through hyperedge HE-5 (induced by source paper "interference avoidance algorithm iaa for multi hop wireless body area network communication"):
  with members:
    - "coexistence and interference mitigation for wireless body area networks improvements using on body opportunistic relaying"
    - "opportunistic relaying in wireless body area networks coexistence performance"

Connected through hyperedge HE-6 (induced by source paper "dynamic channel allocation for interference mitigation in relay assisted wireless body networks"):
  with members:
    - "opportunistic relaying in wireless body area networks coexistence performance"

Connected through hyperedge HE-7 (induced by source paper "distance aware relaying energy efficient dare to monitor patients in multi hop body area sensor networks"):
  with members:
    - "eddeec enhanced developed distributed energy efficient clustering for heterogeneous wireless sensor networks"
    - "energy efficient mac protocols in wireless body area sensor networks a survey"
    - "on modeling geometric joint sink mobility with delay tolerant cluster less wireless sensor networks"
    - "analyzing delay in wireless multi hop heterogeneous body area networks"
    - "srp ms a new routing protocol for delay tolerant wireless sensor networks"
    - "adaptive reliable medium access control protocol for wireless body area networks"
    - "analysis and modeling experiment performance parameters of routing protocols in manets and vanets"
    - "analytical survey of wearable sensors"

Connected through hyperedge HE-8 (induced by source paper "simple stable increased throughput multi hop protocol for link efficiency in wireless body area networks"):
  with members:
    - "q leach a new routing protocol for wsns"
    - "on energy efficiency and delay minimization in reactive protocols in wireless multi hop networks"
    - "analyzing delay in wireless multi hop heterogeneous body area networks"
    - "analyzing medium access techniques in wireless body area networks"
    - "noise filtering channel modeling and energy utilization in wireless body area networks"
    - "m attempt a new energy efficient routing protocol in wireless body area sensor networks"
    - "identifying design requirements for wireless routing link metrics"
    - "interference and bandwidth adjusted etx in wireless multi hop 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)