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 secure degrees of freedom of wireless x networks"
  Abstract: Previous work showed that the X network with M transmitters, N receivers has MN/(M+N-1) degrees of freedom. In this work we study the degrees of freedom of the X network with secrecy constraints, i.e. the X network where some/all messages are confidential. We consider the $M \times N$ network where all messages are secured and show that N(M-1)/(M+N-1) degrees of freedom can be achieved. Secondly, we show that if messages from only M-1 transmitters are confidential, then MN/(M+N-1) degrees of freedom can be achieved meaning that there is no loss of degrees of freedom because of secrecy constraints. We also consider the achievable secure degrees of freedom under a more conservative secrecy constraint. We require that messages from any subset of transmitters are secure even if other transmitters are compromised, i.e., messages from the compromised transmitter are revealed to the unintended receivers. We also study the achievable secure degrees of freedom of the K user Gaussian interference channel under two different secrecy constraints where 1/2 secure degrees of freedom per message can be achieved. The achievable scheme in all cases is based on random binning combined with interference alignment.

Connected through hyperedge HE-1 (induced by source paper "on the secure degrees of freedom of the k user interference channel with delayed csit"):
  with members:
    - "secure retrospective interference alignment"
    - "secure degrees of freedom of one hop wireless networks with no eavesdropper csit"
    - "secrecy in mimo networks with no eavesdropper csit"
    - "ergodic interference alignment with delayed feedback"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "secure degrees of freedom of k user gaussian interference channels a unified view"
    - "interference alignment for secrecy"
    - "completely stale transmitter channel state information is still very useful"

Connected through hyperedge HE-2 (induced by source paper "secure lossy source coding for some classes of helper and gray wyner models"):
  with members:
    - "multiaccess channel with partially cooperating encoders and security constraints"
    - "on secure source coding with side information at the encoder"
    - "secure degrees of freedom of mimo x channels with output feedback and delayed csit"
    - "secure source coding with a public helper"
    - "bounds on the capacity of the relay channel with noncausal state at source"
    - "secure lossless compression with side information"
    - "the secrecy capacity of the mimo wiretap channel"
    - "the gaussian multiple access wire tap channel"

Connected through hyperedge HE-3 (induced by source paper "iterative distributed minimum total mse approach for secure communications in mimo interference channels"):
  with members:
    - "distributed energy spectral efficiency optimization for partial full interference alignment in multi user multi relay multi cell mimo systems"
    - "fifty years of mimo detection the road to large scale mimos"
    - "secure degrees of freedom of one hop wireless networks"
    - "degrees of freedom of the three user rank deficient mimo interference channel"
    - "limited feedback based interference alignment for interfering multi access channels"
    - "enhancing secrecy with multi antenna transmission in wireless ad hoc networks"
    - "filter design with secrecy constraints the mimo gaussian wiretap channel"
    - "interference alignment for secrecy"

Connected through hyperedge HE-4 (induced by source paper "secure degrees of freedom regions of multiple access and interference channels the polytope structure"):
  with members:
    - "secure degrees of freedom of one hop wireless networks"
    - "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"
    - "secure degrees of freedom of k user gaussian interference channels a unified view"
    - "interference alignment for secrecy"
    - "on the secure degrees of freedom of the multiple access channel"
    - "ergodic secret alignment"
    - "cooperation with an untrusted relay a secrecy perspective"

Connected through hyperedge HE-5 (induced by source paper "secure degrees of freedom region of the two user miso broadcast channel with alternating csit"):
  with members:
    - "secure degrees of freedom of wireless x networks using artificial noise alignment"
    - "aligned image sets under channel uncertainty settling a conjecture by lapidoth shamai and wigger on the collapse of degrees of freedom under finite precision csit"
    - "on the degrees of freedom of the 3 user miso broadcast channel with hybrid csit"
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"
    - "dof analysis of the k user miso broadcast channel with alternating csit"
    - "on the dof region of the k user miso broadcast channel with hybrid csit"
    - "linear degrees of freedom of the mimo x channel with delayed csit"
    - "secure degrees of freedom of mimo x channels with output feedback and delayed csit"

Connected through hyperedge HE-6 (induced by source paper "secure degrees of freedom of multi user networks one time pads in the air via alignment"):
  with members:
    - "secure degrees of freedom of one hop wireless networks"
    - "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"
    - "new results on multiple input multiple output broadcast channels with confidential messages"
    - "interference alignment for secrecy"
    - "strongly secure communications over the two way wiretap channel"
    - "on the secure degrees of freedom of the multiple access channel"
    - "ergodic secret alignment"

Connected through hyperedge HE-7 (induced by source paper "secure degrees of freedom of wireless x networks using artificial noise alignment"):
  with members:
    - "secure degrees of freedom of one hop wireless networks"
    - "multiaccess channel with partially cooperating encoders and security constraints"
    - "secure degrees of freedom of k user gaussian interference channels a unified view"
    - "secure degrees of freedom of mimo x channels with output feedback and delayed csit"
    - "on x channels with feedback and delayed csi"
    - "secure communication over parallel relay channel"
    - "on achievable degrees of freedom for mimo x channels"
    - "interference alignment for secrecy"

Connected through hyperedge HE-8 (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"

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)