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 constrained robust secure transmission for miso wiretap channels"
  Abstract: In this paper we consider the robust secure beamformer design for MISO wiretap channels. Assume that the eavesdroppers' channels are only partially available at the transmitter, we seek to maximize the secrecy rate under the transmit power and secrecy rate outage probability constraint. The outage probability constraint requires that the secrecy rate exceeds certain threshold with high probability. Therefore including such constraint in the design naturally ensures the desired robustness. Unfortunately, the presence of the probabilistic constraints makes the problem non-convex and hence difficult to solve. In this paper, we investigate the outage probability constrained secrecy rate maximization problem using a novel two-step approach. Under a wide range of uncertainty models, our developed algorithms can obtain high-quality solutions, sometimes even exact global solutions, for the robust secure beamformer design problem. Simulation results are presented to verify the effectiveness and robustness of the proposed algorithms.

Connected through hyperedge HE-1 (induced by source paper "multi antenna aided secrecy beamforming optimization for wirelessly powered hetnets"):
  with members:
    - "optimal beamforming and time allocation for partially wireless powered sensor networks with downlink swipt"
    - "energy efficient user association and power allocation in millimeter wave based ultra dense networks with energy harvesting base stations"
    - "wireless power transfer in massive mimo aided hetnets with user association"
    - "secrecy transmit beamforming for heterogeneous networks"
    - "evolution toward 5g multi tier cellular wireless networks an interference management perspective"
    - "five disruptive technology directions for 5g"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "optimal and robust transmit designs for miso channel secrecy by semidefinite programming"

Connected through hyperedge HE-2 (induced by source paper "channel correlation enabled transmit optimization for miso wiretap channels"):
  with members:
    - "deep learning for iot big data and streaming analytics a survey"
    - "improving physical layer secrecy using full duplex jamming receivers"
    - "on secrecy rate of the generalized artificial noise assisted secure beamforming for wiretap channels"

Connected through hyperedge HE-3 (induced by source paper "robust artificial noise aided transmit design for multi user miso systems with integrated services"):
  with members:
    - "safeguarding decentralized wireless networks using full duplex jamming receivers"
    - "principles of physical layer security in multiuser wireless networks a survey"
    - "physical layer multicasting by stochastic transmit beamforming and alamouti space time coding"
    - "wireless physical layer security with imperfect channel state information a survey"
    - "new results on multiple input multiple output broadcast channels with confidential messages"
    - "precoder design for physical layer multicasting"
    - "robust secure transmission in miso channels based on worst case optimization"
    - "optimal and robust transmit designs for miso channel secrecy by semidefinite programming"

Connected through hyperedge HE-4 (induced by source paper "robust an aided beamforming and power splitting design for secure miso cognitive radio with swipt"):
  with members:
    - "robust beamforming for secure communication in systems with wireless information and power transfer"
    - "secrecy outage and diversity analysis of cognitive radio systems"
    - "secure and green swipt in distributed antenna networks with limited backhaul capacity"
    - "simultaneous wireless information and power transfer in modern communication systems"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "on green energy powered cognitive radio networks"
    - "spatially selective artificial noise aided transmit optimization for miso multi eves secrecy rate maximization"
    - "robust secure transmission in miso channels based on worst case optimization"

Connected through hyperedge HE-5 (induced by source paper "joint power control in wiretap interference channels"):
  with members:
    - "secure degrees of freedom of one hop wireless networks"
    - "secrecy in the 2 user symmetric deterministic interference channel with transmitter cooperation"
    - "spectrum leasing via cooperation for enhanced physical layer secrecy"
    - "interference assisted secret communication"
    - "the gaussian many to one interference channel with confidential messages"
    - "cooperative secret communication with artificial noise in symmetric interference channel"
    - "on the relationship between the multi antenna secrecy communications and cognitive radio communications"
    - "on the secrecy rate of interference networks using structured codes"

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)