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: "lattice codes for the gaussian wiretap channel"
  Abstract: It has been shown recently that coding for the Gaussian Wiretap Channel can be done with nested lattices. A fine lattice intended to the legitimate user must be designed as a usual lattice code for the Gaussian Channel, while a coarse lattice is added to introduce confusion at the eavesdropper, whose theta series must be minimized. We study, here, the behavior of this invariant for a class of lattices.

Connected through hyperedge HE-1 (induced by source paper "ldpc based code hopping for gaussian wiretap channel with limited feedback"):
  with members:
    - "coding with scrambling concatenation and harq for the awgn wire tap channel a security gap analysis"
    - "ldpc code design for the bpsk constrained gaussian wiretap channel"
    - "coding for cryptographic security enhancement using stopping sets"
    - "the secrecy capacity region of the gaussian mimo multi receiver wiretap channel"
    - "the secrecy capacity of the mimo wiretap channel"
    - "applications of ldpc codes to the wiretap channel"

Connected through hyperedge HE-2 (induced by source paper "secure compute and forward in a bidirectional relay"):
  with members:
    - "semantically secure lattice codes for the gaussian wiretap channel"
    - "secure computation in a bidirectional relay"
    - "reliable physical layer network coding"
    - "strong secrecy and reliable byzantine detection in the presence of an untrusted relay"
    - "secrecy gain a wiretap lattice code design"
    - "channel coding and decoding in a relay system operated with physical layer network coding"
    - "providing secrecy with lattice codes"
    - "on the secrecy rate of interference networks using structured codes"

Connected through hyperedge HE-3 (induced by source paper "artificial noise revisited"):
  with members:
    - "semantically secure lattice codes for the gaussian wiretap channel"
    - "enhancing secrecy with multi antenna transmission in wireless ad hoc networks"
    - "practical secrecy using artificial noise"
    - "achieving the secrecy capacity of wiretap channels using polar codes"
    - "secure transmission with artificial noise over fading channels achievable rate and optimal power allocation"
    - "mimo networks the effects of interference"
    - "secure transmission with multiple antennas ii the mimome wiretap channel"
    - "the secrecy capacity of the mimo wiretap channel"

Connected through hyperedge HE-4 (induced by source paper "universal hashing for information theoretic security"):
  with members:
    - "secure multiplex coding with dependent and non uniform multiple messages"
    - "equivocations exponents and second order coding rates under various r enyi information measures"
    - "converses for secret key agreement and secure computing"
    - "secret key agreement general capacity and second order asymptotics"
    - "achieving secrecy capacity of the wiretap channel and broadcast channel with a confidential component"
    - "a new upperbound for the oblivious transfer capacity of discrete memoryless channels"
    - "strong converse for a degraded wiretap channel via active hypothesis testing"
    - "semantically secure lattice codes for the gaussian wiretap channel"

Connected through hyperedge HE-5 (induced by source paper "polar lattices for strong secrecy over the mod lambda gaussian wiretap channel"):
  with members:
    - "achieving the secrecy capacity of wiretap channels using polar codes"
    - "on the rate of channel polarization"

Connected through hyperedge HE-6 (induced by source paper "connections between construction d and related constructions of lattices"):
  with members:
    - "turbo lattices construction and error decoding performance"
    - "practical encoders and decoders for euclidean codes from barnes wall lattices"

Connected through hyperedge HE-7 (induced by source paper "some results related to the conjecture by belfiore and sol e"):
  with members:
    - "unimodular lattices for the gaussian wiretap channel"
    - "secrecy gain a wiretap lattice code design"

Connected through hyperedge HE-8 (induced by source paper "secure computation in a bidirectional relay"):
  with members:
    - "reliable physical layer network coding"
    - "providing secrecy with lattice codes"
    - "compute and forward harnessing interference through structured codes"
    - "physical network coding in two way wireless relay channels"

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)