human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "secure full duplex two way relaying for swipt"):
  Abstract: This letter studies bi-directional secure information exchange in a simultaneous wireless information and power transfer (SWIPT) system enabled by a full-duplex (FD) multiple-input multiple-output (MIMO) amplify-and-forward (AF) relay. The AF relay injects artificial noise (AN) in order to confuse the eavesdropper. Specifically, we assume a zeroforcing (ZF) solution constraint to eliminate the residual self-interference (RSI). As a consequence, we address the optimal joint design of the ZF matrix and the AN covariance matrix at the relay node as well as the transmit power at the sources. We propose an alternating algorithm utilizing semi-definite programming (SDP) technique and one-dimensional searching to achieve the optimal solution. Simulation results are provided to demonstrate the effectiveness of the proposed algorithm.

Includes members:
  Member "probabilistically robust swipt for secrecy misome systems":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a survey of physical layer security techniques for 5g wireless networks and challenges ahead")
  Member "transceiver design to maximize the weighted sum secrecy rate in full duplex swipt systems":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "fog assisted multi user swipt networks local computing or offloading")
  Member "joint transmit power and relay two way beamforming optimization for energy harvesting full duplex communications":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "simultaneous wireless information and power transfer in miso full duplex systems")
  Member "sum secrecy rate maximization for full duplex two way relay networks using alamouti based rank two beamforming":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "a survey of physical layer security techniques for 5g wireless networks and challenges ahead")
  Member "wireless information and power transfer in full duplex communication systems":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "simultaneous wireless information and power transfer in miso full duplex systems")
  Member "two way beamforming optimization for full duplex swipt systems":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "simultaneous wireless information and power transfer in miso full duplex systems")
  Member "mimo broadcasting for simultaneous wireless information and power transfer":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "energy efficient hybrid precoding design for integrated multicast unicast millimeter wave communications with swipt")

Question: Please tell me which class the source paper 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)