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: "outage probability of energy harvesting relay aided cooperative networks over rayleigh fading channel"
  Abstract: Energy harvesting technique is a potential way for relay node energy supply in cooperative networks in terms of deployment flexibility and maintain charge reduction. Unlike traditional power source, relay node in this case may run out of energy with certain probability, which can degrade the benefit from relay-aided cooperative transmission. In this paper, we concentrate on the outage behavior of cooperative networks aided by energy harvesting relay node in slow fading channel, and attempt to derive the closed-form expression of outage probability of proposed cooperative protocol. Compared with traditional direct transmission protocol, two conclusions are derived: 1) the diversity gain cannot be increased excepting the extreme case that energy-exhausted probability is zero; 2) a multiplicative gain for improving system performance can be obtained in terms of minimizing outage probability.

Connected through hyperedge HE-1 (induced by source paper "joint power splitting and relay selection in energy harvesting communications for iot networks"):
  with members:
    - "when internet of things meets blockchain challenges in distributed consensus"
    - "cooperative ambient backscatter communications for green internet of things"
    - "optimization of a power splitting protocol for two way multiple energy harvesting relay system"
    - "incentive mechanism design for wireless energy harvesting based internet of things"
    - "practical non linear energy harvesting model and resource allocation for swipt systems"
    - "optimal cooperative power allocation for energy harvesting enabled relay networks"
    - "power allocation strategies in energy harvesting wireless cooperative networks"
    - "exploiting network cooperation in green wireless communication"

Connected through hyperedge HE-2 (induced by source paper "layered coding for energy harvesting communication without csit"):
  with members:
    - "non asymptotic achievable rates for energy harvesting channels using save and transmit"
    - "energy harvesting wireless communications a review of recent advances"
    - "outage minimization for a fading wireless link with energy harvesting transmitter and receiver"
    - "training optimization for energy harvesting communication systems"
    - "broadcasting with an energy harvesting rechargeable transmitter"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"
    - "optimal packet scheduling in an energy harvesting communication system"
    - "distortion minimization in gaussian layered broadcast coding with successive refinement"

Connected through hyperedge HE-3 (induced by source paper "decentralized hypothesis testing in energy harvesting wireless sensor networks"):
  with members:
    - "optimality of rate balancing in wireless sensor networks"
    - "decentralized detection in energy harvesting wireless sensor networks"
    - "optimal adaptive random multiaccess in energy harvesting wireless sensor networks"
    - "energy harvesting wireless communications a review of recent advances"
    - "optimality of received energy in decision fusion over rayleigh fading diversity mac with non identical sensors"
    - "optimal strategies for communication and remote estimation with an energy harvesting sensor"
    - "optimal energy management policies for energy harvesting sensor nodes"

Connected through hyperedge HE-4 (induced by source paper "capacity region of gaussian multiple access channels with energy harvesting and energy cooperation"):
  with members:
    - "simultaneous wireless information and power transfer in cooperative relay networks with rateless codes"
    - "optimum transmission policies for energy harvesting sensor networks powered by a mobile control center"
    - "energy harvesting networks with energy cooperation procrastinating policies"
    - "wireless information and energy transfer for two hop non regenerative mimo ofdm relay networks"
    - "energy cooperation in energy harvesting communications"
    - "sum rate optimal power policies for energy harvesting transmitters in an interference channel"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"

Connected through hyperedge HE-5 (induced by source paper "throughput maximization for wireless powered communications harvesting from non dedicated sources"):
  with members:
    - "some new research trends in wirelessly powered communications"
    - "spatial throughput maximization of wireless powered communication networks"
    - "energy harvesting two hop communication networks"
    - "throughput maximization in wireless powered communication networks"
    - "a general framework for the optimization of energy harvesting communication systems with battery imperfections"

Connected through hyperedge HE-6 (induced by source paper "on wireless energy and information transfer in relay networks"):
  with members:
    - "rf based energy harvesting in decode and forward relaying systems ergodic and outage capacities"
    - "wireless powered relays in cooperative communications time switching relaying protocols and throughput analysis"
    - "relay selection in wireless powered cooperative networks with energy storage"
    - "joint power splitting and antenna selection in energy harvesting relay channels"
    - "outage minimization for a fading wireless link with energy harvesting transmitter and receiver"
    - "harvest then cooperate wireless powered cooperative communications"
    - "wireless powered cooperative communications via a hybrid relay"
    - "wireless networks with rf energy harvesting a contemporary survey"

Connected through hyperedge HE-7 (induced by source paper "optimum transmission policies for energy harvesting sensor networks powered by a mobile control center"):
  with members:
    - "wireless information and energy transfer for two hop non regenerative mimo ofdm relay networks"
    - "energy beamforming with one bit feedback"
    - "power allocation strategies in energy harvesting wireless cooperative networks"
    - "optimized training design for wireless energy transfer"
    - "throughput maximization in wireless powered communication networks"
    - "simultaneous information and power transfer for broadband wireless systems"
    - "wireless information and power transfer a dynamic power splitting approach"
    - "wireless information and power transfer architecture design and rate energy tradeoff"

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.IT(Information Theory)