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: "weighted sum transmit power minimization for full duplex system with swipt and self energy recycling"
  Abstract: This correspondence considers a full-duplex (FD) point-to-point system consisting of one multi-antenna full-duplex access point (FD-AP) and one two-antenna full-duplex mobile station (FD-MS). We adopt simultaneous wireless information and power transfer (SWIPT) scheme and apply the self-energy recycling at FD-MS. In order to minimize the weighted sum transmit power, we jointly design the transmit beamforming vector of FD-AP, the receive power splitting (PS) ratio of FD-MS, as well as the transmit power value of FD-MS. Since the original problem is non-convex, we apply semidefinite relaxation (SDR) and obtain a new convex problem. We further prove that both problems have exactly the same solutions. Finally, simulations are provided to verify our analysis, and the comparison with a half-duplex (HD) system demonstrates the significant performance gain from self-energy recycling.

Connected through hyperedge HE-1 (induced by source paper "transmit precoding and receive power splitting for harvested power maximization in mimo swipt systems"):
  with members:
    - "jointly optimal spatial channel assignment and power allocation for mimo swipt systems"
    - "harvested power maximization in qos constrained mimo swipt with generic rf harvesting model"
    - "power allocation and scheduling for swipt systems with non linear energy harvesting model"
    - "spatial domain simultaneous information and power transfer for mimo channels"
    - "simultaneous wireless information and power transfer in modern communication systems"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "joint transmit beamforming and receive power splitting for miso swipt systems"
    - "relaying protocols for wireless energy harvesting and information processing"

Connected through hyperedge HE-2 (induced by source paper "capacity of a full duplex wirelessly powered communication system with self interference and processing cost"):
  with members:
    - "rf based energy harvesting in decode and forward relaying systems ergodic and outage capacities"
    - "capacity region of gaussian multiple access channels with energy harvesting and energy cooperation"
    - "capacity analysis of discrete energy harvesting channels"
    - "capacity of the energy harvesting gaussian mac"
    - "capacity of the two hop relay channel with wireless energy transfer from relay to source and energy transmission cost"
    - "capacity of the energy harvesting channel with a finite battery"
    - "energy recycling full duplex radios for next generation networks"
    - "capacity of the gaussian two hop full duplex relay channel with residual self interference"

Connected through hyperedge HE-3 (induced by source paper "beamforming optimization for full duplex wireless powered mimo systems"):
  with members:
    - "throughput analysis and optimization of wireless powered multiple antenna full duplex relay systems"
    - "on the performance of multi antenna wireless powered communications with energy beamforming"
    - "wireless powered communication networks an overview"
    - "communications and signals design for wireless power transmission"
    - "multipair full duplex relaying with massive arrays and linear processing"
    - "optimal resource allocation in full duplex wireless powered communication network"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "low complexity end to end performance optimization in mimo full duplex relay systems"

Connected through hyperedge HE-4 (induced by source paper "simultaneous wireless information and power transfer in miso full duplex systems"):
  with members:
    - "joint transmit power and relay two way beamforming optimization for energy harvesting full duplex communications"
    - "wireless information and power transfer in full duplex communication systems"
    - "two way beamforming optimization for full duplex swipt systems"
    - "all digital self interference cancellation technique for full duplex systems"
    - "joint transmit beamforming and receive power splitting for miso swipt systems"
    - "wireless information and power transfer architecture design and rate energy tradeoff"
    - "experiment driven characterization of full duplex wireless systems"
    - "mimo broadcasting for simultaneous wireless information and power transfer"

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)