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: "the one bit null space learning algorithm and its convergence"
  Abstract: This paper proposes a new algorithm for MIMO cognitive radio secondary users (SU) to learn the null space of the interference channel to the primary user (PU) without burdening the PU with any knowledge or explicit cooperation with the SU. The knowledge of this null space enables the SU to transmit in the same band simultaneously with the PU by utilizing separate spatial dimensions than the PU. Specifically, the SU transmits in the null space of the interference channel to the PU. We present a new algorithm, called the one-bit null space learning algorithm (OBNSLA), in which the SU learns the PU's null space by observing a binary function that indicates whether the interference it inflicts on the PU has increased or decreased in comparison to the SU's previous transmitted signal. This function is obtained by listening to the PU transmitted signal or control channel and extracting information from it about whether the PU's signal-to-interference-plus-noise power ratio (SINR) has increased or decreased. The OBNSLA is shown to have a linear convergence rate and an asymptotic quadratic convergence rate. Finally, we derive bounds on the interference that the SU inflicts on the PU as a function of a parameter determined by the SU. This lets the SU control the maximum level of interference, which enables it to protect the PU completely blindly with minimum complexity. The asymptotic analysis and the derived bounds also apply to the recently proposed blind null space learning algorithm.

Connected through hyperedge HE-1 (induced by source paper "distributed wireless power transfer with energy feedback"):
  with members:
    - "a general design framework for mimo wireless energy transfer with limited feedback"
    - "wireless powered communication networks an overview"
    - "some new research trends in wirelessly powered communications"
    - "wireless powered communication opportunities and challenges"
    - "distributed energy beamforming with one bit feedback"
    - "collaborative wireless energy and information transfer in interference channel"
    - "optimized training for net energy maximization in multi antenna wireless energy transfer over frequency selective channel"
    - "simultaneous wireless information and power transfer in modern communication systems"

Connected through hyperedge HE-2 (induced by source paper "an efficient global algorithm for single group multicast beamforming"):
  with members:
    - "energy beamforming with one bit feedback"
    - "physical layer multicasting by stochastic transmit beamforming and alamouti space time coding"

Connected through hyperedge HE-3 (induced by source paper "constrained bayesian active learning of interference channels in cognitive radio networks"):
  with members:
    - "centralized power control in cognitive radio networks using modulation and coding classification feedback"

Connected through hyperedge HE-4 (induced by source paper "a general design framework for mimo wireless energy transfer with limited feedback"):
  with members:
    - "wireless powered communication networks an overview"
    - "wireless powered communication opportunities and challenges"
    - "throughput optimization for massive mimo systems powered by wireless energy transfer"
    - "multiuser mimo wireless energy transfer with coexisting opportunistic communication"
    - "optimized training for net energy maximization in multi antenna wireless energy transfer over frequency selective channel"
    - "energy beamforming with one bit feedback"
    - "optimized training design for wireless energy transfer"
    - "multiuser miso beamforming for simultaneous wireless information and power transfer"

Connected through hyperedge HE-5 (induced by source paper "wireless powered communication opportunities and challenges"):
  with members:
    - "secrecy wireless information and power transfer in fading wiretap channel"
    - "throughput optimization for massive mimo systems powered by wireless energy transfer"
    - "collaborative wireless energy and information transfer in interference channel"
    - "robust beamforming for secure communication in systems with wireless information and power transfer"
    - "recent advances in joint wireless energy and information transfer"
    - "user cooperation in wireless powered communication networks"
    - "optimal resource allocation in full duplex wireless powered communication network"
    - "energy beamforming with one bit feedback"

Connected through hyperedge HE-6 (induced by source paper "proactive eavesdropping via cognitive jamming in fading channels"):
  with members:
    - "cyclical multiple access in uav aided communications a throughput delay tradeoff"
    - "surveillance and intervention of infrastructure free mobile communications a new wireless security paradigm"
    - "wireless information surveillance via proactive eavesdropping with spoofing relay"
    - "a survey on wireless security technical challenges recent advances and future trends"
    - "fundamental rate limits of physical layer spoofing"
    - "wireless communications with unmanned aerial vehicles opportunities and challenges"
    - "proactive eavesdropping via jamming for rate maximization over rayleigh fading channels"
    - "physical layer security for massive mimo an overview on passive eavesdropping and active attacks"

Connected through hyperedge HE-7 (induced by source paper "centralized power control in cognitive radio networks using modulation and coding classification feedback"):
  with members:
    - "energy beamforming with one bit feedback"
    - "distributed transmit beamforming using feedback control"

Connected through hyperedge HE-8 (induced by source paper "energy beamforming with one bit feedback"):
  with members:
    - "multiuser miso beamforming for simultaneous wireless information and power transfer"
    - "throughput maximization in wireless powered communication networks"
    - "opportunistic wireless energy harvesting in cognitive radio networks"
    - "simultaneous information and power transfer for broadband wireless systems"
    - "relaying protocols for wireless energy harvesting and information processing"
    - "multi antenna wireless powered communication with energy beamforming"
    - "wireless information transfer with opportunistic energy harvesting"
    - "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)