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: "resource allocation in wireless networks with rf energy harvesting and transfer"
  Abstract: RF energy harvesting and transfer techniques have recently become alternative methods to power the next generation of wireless networks. As this emerging technology enables proactive replenishment of wireless devices, it is advantageous in supporting applications with QoS requirements. This article focuses on the resource allocation issues in wireless networks with RF energy harvesting capability, referred to as RF-energy harvesting networks (RF-EHNs). First we present an overview of the RF-EHNs, followed by a review of a variety of issues regarding resource allocation. Then we present a case study of designing in the receiver operation policy, which is of paramount importance in RF-EHNs. We focus on QoS support and service differentiation, which have not been addressed in previous literature. We also outline open research directions.

Connected through hyperedge HE-1 (induced by source paper "experiment modeling and analysis of wireless powered sensor network for energy neutral power management"):
  with members:
    - "wireless charging technologies fundamentals standards and network applications"
    - "wireless powered communication opportunities and challenges"
    - "harvest then cooperate wireless powered cooperative communications"
    - "secure beamforming for mimo broadcasting with wireless information and power transfer"
    - "full duplex wireless powered communication network with energy causality"

Connected through hyperedge HE-2 (induced by source paper "wireless powered device to device communications with ambient backscattering performance modeling and analysis"):
  with members:
    - "analysis of wireless powered device to device communications with ambient backscattering"
    - "wireless charging technologies fundamentals standards and network applications"
    - "wirelessly powered backscatter communication networks modeling coverage and capacity"
    - "downlink coverage probability in a cellular network with ginibre deployed base stations and nakagami m fading channels"
    - "wireless powered communication opportunities and challenges"
    - "performance analysis of ambient rf energy harvesting with repulsive point process modeling"
    - "hierarchical cooperation for operator controlled device to device communications a layered coalitional game approach"
    - "wireless charger networking for mobile devices fundamentals standards and applications"

Connected through hyperedge HE-3 (induced by source paper "analysis of wireless powered device to device communications with ambient backscattering"):
  with members:
    - "wireless charging technologies fundamentals standards and network applications"
    - "hierarchical cooperation for operator controlled device to device communications a layered coalitional game approach"
    - "wireless charger networking for mobile devices fundamentals standards and applications"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "performance analysis of ambient rf energy harvesting a stochastic geometry approach"
    - "dynamic spectrum access in cognitive radio networks with rf energy harvesting"
    - "throughput maximization in wireless powered communication networks"

Connected through hyperedge HE-4 (induced by source paper "ambient backscatter networking a novel paradigm to assist wireless powered communications"):
  with members:
    - "analysis of wireless powered device to device communications with ambient backscattering"
    - "performance analysis of ambient rf energy harvesting a stochastic geometry approach"
    - "dynamic spectrum access in cognitive radio networks with rf energy harvesting"
    - "full duplex wireless powered relay with self energy recycling"

Connected through hyperedge HE-5 (induced by source paper "wireless charging technologies fundamentals standards and network applications"):
  with members:
    - "secrecy wireless information and power transfer in fading wiretap channel"
    - "wireless powered communication opportunities and challenges"
    - "performance analysis of ambient rf energy harvesting with repulsive point process modeling"
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "green wireless power transfer networks"
    - "energy harvesting wireless communications a review of recent advances"
    - "joint wireless information and power transfer for an autonomous multiple antenna relay system"
    - "throughput optimization for massive mimo systems powered by wireless energy transfer"

Connected through hyperedge HE-6 (induced by source paper "on the performance of multi antenna wireless powered communications with energy beamforming"):
  with members:
    - "wireless powered communication opportunities and challenges"
    - "an adaptive transmission protocol for wireless powered cooperative communications"
    - "harvest then cooperate wireless powered cooperative communications"
    - "wireless powered cooperative communications via a hybrid relay"
    - "user cooperation in wireless powered communication networks"
    - "multi user scheduling schemes for simultaneous wireless information and power transfer over fading channels"
    - "power allocation strategies in energy harvesting wireless cooperative networks"
    - "optimized training design for wireless energy transfer"

Connected through hyperedge HE-7 (induced by source paper "path following algorithms for beamforming and signal splitting in rf energy harvesting networks"):
  with members:
    - "enhancing wireless information and power transfer by exploiting multi antenna techniques"
    - "spatial domain simultaneous information and power transfer for mimo channels"
    - "robust beamforming for secure communication in systems with wireless information and power transfer"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "multiuser miso beamforming for simultaneous wireless information and power transfer"
    - "relaying protocols for wireless energy harvesting and information processing"

Connected through hyperedge HE-8 (induced by source paper "efficient coded cooperative networks with energy harvesting and wireless power transfer"):
  with members:
    - "throughput maximization for two way relay channels with energy harvesting nodes the impact of relaying strategies"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "trading wireless information and power transfer relay selection to minimize the outage probability"
    - "time switching uplink network coded cooperative communication with downlink energy transfer"
    - "throughput maximization in wireless powered communication networks"
    - "throughput optimal policies for energy harvesting wireless transmitters with non ideal circuit power"

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)