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: "joint power splitting and antenna selection in energy harvesting relay channels"
  Abstract: The simultaneous wireless transfer of information and power with the help of a relay equipped with multiple antennas is considered in this letter, where a “harvest-and-forward” strategy is proposed. In particular, the relay harvests energy and obtains information from the source with the radio-frequent signals by jointly using the antenna selection (AS) and power splitting (PS) techniques, and then the processed information is amplified and forwarded to the destination relying on the harvested energy. This letter jointly optimizes AS and PS to maximize the achievable rate for the proposed strategy. Considering that the joint optimization is according to the non-convex problem, a two-stage procedure is proposed to determine the optimal ratio of received signal power split for energy harvesting, and the optimized antenna set engaged in information forwarding. Simulation results confirm the accuracy of the two-stage procedure, and demonstrate that the proposed “harvest-and-forward” strategy outperforms the conventional amplify-and-forward (AF) relaying and the direct transmission.

Connected through hyperedge HE-1 (induced by source paper "throughput maximization in two hop df multiple relay network with simultaneous wireless information and power transfer"):
  with members:
    - "sensitive and nonlinear far field rf energy harvesting in wireless communications"
    - "robust resource allocation for mimo wireless powered communication networks based on a non linear eh model"
    - "training based swipt optimal power splitting at the receiver"
    - "practical non linear energy harvesting model and resource allocation for swipt systems"
    - "information and energy cooperation in ofdm relaying protocols and optimization"
    - "wireless information and energy transfer for two hop non regenerative mimo ofdm relay networks"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "wireless information and power transfer with full duplex relaying"

Connected through hyperedge HE-2 (induced by source paper "joint resource allocation in swipt based multi antenna decode and forward relay networks"):
  with members:
    - "power allocation for secure swipt systems with wireless powered cooperative jamming"
    - "relaying strategies for wireless powered mimo relay networks"
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "joint wireless information and power transfer for an autonomous multiple antenna relay system"
    - "information and energy cooperation in ofdm relaying protocols and optimization"
    - "energy harvesting for physical layer security in ofdma networks"
    - "enhancing wireless information and power transfer by exploiting multi antenna techniques"
    - "wireless information and energy transfer for two hop non regenerative mimo ofdm relay networks"

Connected through hyperedge HE-3 (induced by source paper "distributed multi relay selection in accumulate then forward energy harvesting relay networks"):
  with members:
    - "wireless powered communication opportunities and challenges"
    - "wireless powered relays in cooperative communications time switching relaying protocols and throughput analysis"
    - "relay selection in wireless powered cooperative networks with energy storage"
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "full duplex mimo relaying powered by wireless energy transfer"
    - "wireless powered communications performance analysis and optimization"
    - "wireless information and energy transfer for two hop non regenerative mimo ofdm relay networks"
    - "wireless information and power transfer in relay systems with multiple antennas and interference"

Connected through hyperedge HE-4 (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"
    - "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"
    - "outage probability of energy harvesting relay aided cooperative networks over rayleigh fading channel"

Connected through hyperedge HE-5 (induced by source paper "resource allocation in wireless powered relay networks a bargaining game approach"):
  with members:
    - "noncoherent relaying in energy harvesting communication systems"
    - "joint resource optimization for multicell networks with wireless energy harvesting relays"
    - "wireless charger networking for mobile devices fundamentals standards and applications"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "full duplex wireless powered relay with self energy recycling"
    - "power allocation strategies in energy harvesting wireless cooperative networks"
    - "simultaneous information and energy transfer in large scale networks with without relaying"
    - "wireless information and power transfer energy efficiency optimization in ofdma systems"

Connected through hyperedge HE-6 (induced by source paper "wireless powered cooperative communications power splitting relaying with energy accumulation"):
  with members:
    - "fronthaul constrained cloud radio access networks insights and challenges"
    - "simultaneous wireless information and power transfer in modern communication systems"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "evolution toward 5g multi tier cellular wireless networks an interference management perspective"
    - "application of smart antenna technologies in simultaneous wireless information and power transfer"
    - "simultaneous information and power transfer for broadband wireless systems"
    - "relaying protocols for wireless energy harvesting and information processing"
    - "wireless information and power transfer a dynamic power splitting approach"

Connected through hyperedge HE-7 (induced by source paper "amplify and forward full duplex relay with power splitting based swipt"):
  with members:
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "full duplex mimo relaying powered by wireless energy transfer"
    - "dynamic power splitting policies for af relay networks with wireless energy harvesting"
    - "simultaneous wireless information and power transfer in modern communication systems"
    - "power allocation strategies in energy harvesting wireless cooperative networks"
    - "optimized training design for wireless energy transfer"
    - "wireless information and power transfer with full duplex relaying"
    - "throughput maximization for the gaussian relay channel with energy harvesting constraints"

Connected through hyperedge HE-8 (induced by source paper "relaying strategies for wireless powered mimo relay networks"):
  with members:
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "joint wireless information and power transfer for an autonomous multiple antenna relay system"
    - "joint wireless information and power transfer in a three node autonomous mimo relay network"
    - "joint resource optimization for multicell networks with wireless energy harvesting relays"
    - "user cooperation in wireless powered communication networks"
    - "power allocation strategies in energy harvesting wireless cooperative networks"
    - "relaying protocols for wireless energy harvesting and information processing"
    - "cooperative algorithms for mimo amplify and forward relay 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.IT(Information Theory)