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: "on the compound mimo broadcast channels with confidential messages"
  Abstract: We study the compound multi-input multi-output (MIMO) broadcast channel with confidential messages (BCC), where one transmitter sends a common message to two receivers and two confidential messages respectively to each receiver. The channel state may take one of a finite set of states, and the transmitter knows the state set but does not know the realization of the state. We study achievable rates with perfect secrecy in the high SNR regime by characterizing an achievable secrecy degree of freedom (s.d.o.f.) region for two models, the Gaussian MIMO-BCC and the ergodic fading multi-input single-output (MISO)-BCC without a common message. We show that by exploiting an additional temporal dimension due to state variation in the ergodic fading model, the achievable s.d.o.f. region can be significantly improved compared to the Gaussian model with a constant state, although at the price of a larger delay.

Connected through hyperedge HE-1 (induced by source paper "the secrecy capacity of compound gaussian mimo wiretap channels"):
  with members:
    - "on the continuity of the secrecy capacity of compound and arbitrarily varying wiretap channels"
    - "secrecy results for compound wiretap channels"
    - "finite snr diversity multiplexing tradeoff via asymptotic analysis of large mimo systems"
    - "mimo wiretap channels with arbitrarily varying eavesdropper channel states"
    - "secure transmission with multiple antennas ii the mimome wiretap channel"
    - "transmitter optimization for achieving secrecy capacity in gaussian mimo wiretap channels"
    - "the secrecy capacity of the mimo wiretap channel"

Connected through hyperedge HE-2 (induced by source paper "on the continuity of the secrecy capacity of compound and arbitrarily varying wiretap channels"):
  with members:
    - "the arbitrarily varying wiretap channel secret randomness stability and super activation"
    - "the arbitrarily varying wiretap channel deterministic and correlated random coding capacities under the strong secrecy criterion"
    - "secrecy results for compound wiretap channels"
    - "capacity results for arbitrarily varying wiretap channels"

Connected through hyperedge HE-3 (induced by source paper "mimo broadcast channel with an unknown eavesdropper secrecy degrees of freedom"):
  with members:
    - "secure degrees of freedom of the gaussian wiretap channel with helpers and no eavesdropper csi blind cooperative jamming"
    - "universal secure network coding via rank metric codes"
    - "degrees of freedom region of the gaussian mimo broadcast channel with common and private messages"
    - "secrecy degrees of freedom of mimo broadcast channels with delayed csit"
    - "mimo wiretap channels with arbitrarily varying eavesdropper channel states"
    - "secure transmission with multiple antennas ii the mimome wiretap channel"
    - "the secrecy capacity region of the gaussian mimo multi receiver wiretap channel"
    - "on the degrees of freedom of finite state compound wireless networks settling a conjecture by weingarten et al"

Connected through hyperedge HE-4 (induced by source paper "an information theoretic approach to secret sharing"):
  with members:
    - "on the degrees of freedom of the compound mimo broadcast channels with finite states"
    - "the secrecy capacity region of the gaussian mimo multi receiver wiretap channel"
    - "degraded compound multi receiver wiretap channels"

Connected through hyperedge HE-5 (induced by source paper "mimo multiple access channel with an arbitrarily varying eavesdropper"):
  with members:
    - "robust beamforming for security in mimo wiretap channels with imperfect csi"
    - "interference alignment for the multi antenna compound wiretap channel"
    - "mimo wiretap channels with arbitrarily varying eavesdropper channel states"
    - "on the secure degrees of freedom of the multiple access channel"
    - "distributed storage codes meet multiple access wiretap channels"
    - "secure transmission with multiple antennas ii the mimome wiretap channel"
    - "the secrecy capacity region of the gaussian mimo multi receiver wiretap channel"
    - "providing secrecy with structured codes tools and applications to two user gaussian channels"

Connected through hyperedge HE-6 (induced by source paper "secrecy degrees of freedom of mimo broadcast channels with delayed csit"):
  with members:
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "the degrees of freedom region and interference alignment for the mimo interference channel with delayed csi"
    - "the degrees of freedom regions of two user and certain three user mimo broadcast channels with delayed csit"
    - "completely stale transmitter channel state information is still very useful"
    - "retrospective interference alignment"
    - "on the secrecy degress of freedom of the multi antenna block fading wiretap channels"
    - "discrete memoryless interference and broadcast channels with confidential messages secrecy rate regions"
    - "the secrecy capacity of the mimo wiretap channel"

Connected through hyperedge HE-7 (induced by source paper "on the secrecy degrees of freedom of multi antenna wiretap channels with delayed csit"):
  with members:
    - "the degrees of freedom region and interference alignment for the mimo interference channel with delayed csi"
    - "the degrees of freedom regions of two user and certain three user mimo broadcast channels with delayed csit"
    - "retrospective interference alignment"
    - "interference alignment for the multi antenna compound wiretap channel"
    - "on the secrecy degress of freedom of the multi antenna block fading wiretap channels"

Connected through hyperedge HE-8 (induced by source paper "universally attainable error and information exponents and equivocation rate for the broadcast channels with confidential messages"):
  with members:
    - "exponential decreasing rate of leaked information in universal random privacy amplification"
    - "secure multiplex coding with a common message"
    - "secure multiplex network coding"
    - "strong security and separated code constructions for the broadcast channels with confidential messages"
    - "general non asymptotic and asymptotic formulas in channel resolvability and identification capacity and their application to wire tap channel"

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)