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: "secure degrees of freedom for gaussian channels with interference structured codes outperform gaussian signaling"
  Abstract: In this work, we prove that a positive secure degree of freedom is achievable for a large class of real Gaussian channels as long as the channel is not degraded and the channel is fully connected. This class includes the MAC wiretap channel, the 2-user interference channel with confidential messages, the 2-user interference channel with an external eavesdropper. Best known achievable schemes to date for these channels use Gaussian signaling. In this work, we show that structured codes outperform Gaussian random codes at high SNR when channel gains are real numbers.

Connected through hyperedge HE-1 (induced by source paper "preserving confidentiality in the gaussian broadcast channel using compute and forward"):
  with members:
    - "security in the gaussian interference channel weak and moderately weak interference regimes"
    - "compute and forward can buy secrecy cheap"
    - "finite snr regime analysis of the gaussian wiretap multiple access channel"
    - "secure degrees of freedom of one hop wireless networks"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "secure degrees of freedom of k user gaussian interference channels a unified view"
    - "the approximate sum capacity of the symmetric gaussian k user interference channel"
    - "compute and forward harnessing interference through structured codes"

Connected through hyperedge HE-2 (induced by source paper "secure degrees of freedom of one hop wireless networks"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "secure degrees of freedom of the gaussian wiretap channel with helpers and no eavesdropper csi blind cooperative jamming"
    - "interference alignment for secrecy"
    - "mimo wiretap channels with arbitrarily varying eavesdropper channel states"
    - "on the secure degrees of freedom of the multiple access channel"
    - "ergodic secret alignment"
    - "cooperation with an untrusted relay a secrecy perspective"
    - "real interference alignment with real numbers"

Connected through hyperedge HE-3 (induced by source paper "secure degrees of freedom of the gaussian wiretap channel with helpers and no eavesdropper csi blind cooperative jamming"):
  with members:
    - "secure degrees of freedom of one hop wireless networks"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "artificial noise alignment for secure multicast using multiple antennas"
    - "interference alignment for secrecy"
    - "on the secure degrees of freedom of the multiple access channel"
    - "ergodic secret alignment"
    - "real interference alignment with real numbers"
    - "providing secrecy with structured codes tools and applications to two user gaussian channels"

Connected through hyperedge HE-4 (induced by source paper "secret key generation using correlated sources and channels"):
  with members:
    - "interference alignment for secrecy"
    - "secure transmission with multiple antennas ii the mimome wiretap channel"
    - "lecture notes on network information theory"
    - "the secrecy capacity region of the gaussian mimo multi receiver wiretap channel"
    - "lossless compression with security constraints"
    - "shannon s secrecy system with informed receivers and its application to systematic coding for wiretapped channels"

Connected through hyperedge HE-5 (induced by source paper "interference alignment for the multi antenna compound wiretap channel"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "interference alignment for secrecy"
    - "aiming perfectly in the dark blind interference alignment through staggered antenna switching"
    - "the secrecy capacity region of the gaussian mimo multi receiver wiretap channel"
    - "real interference alignment with real numbers"
    - "degraded compound multi receiver wiretap channels"
    - "towards the secrecy capacity of the gaussian mimo wire tap channel the 2 2 1 channel"
    - "on the degrees of freedom of finite state compound wireless networks settling a conjecture by weingarten et al"

Connected through hyperedge HE-6 (induced by source paper "ergodic secret alignment"):
  with members:
    - "interference alignment for secrecy"
    - "on the secure degrees of freedom of the multiple access channel"
    - "real interference alignment with real numbers"
    - "ergodic interference alignment"
    - "k user interference channels achievable secrecy rate and degrees of freedom"
    - "on the secure degrees of freedom of wireless x networks"
    - "the gaussian multiple access wire tap channel"

Connected through hyperedge HE-7 (induced by source paper "interference channels with strong secrecy"):
  with members:
    - "the gaussian many to one interference channel with confidential messages"
    - "providing secrecy with structured codes tools and applications to two user gaussian channels"
    - "providing secrecy with lattice codes"
    - "k user interference channels achievable secrecy rate and degrees of freedom"
    - "discrete memoryless interference and broadcast channels with confidential messages secrecy rate regions"
    - "multi antenna gaussian broadcast channels with confidential messages"

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)