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: "multiple access channels with generalized feedback and confidential messages"
  Abstract: This paper considers the problem of secret communication over a multiple access channel with generalized feedback. Two trusted users send independent confidential messages to an intended receiver, in the presence of a passive eavesdropper. In this setting, an active cooperation between two trusted users is enabled through using channel feedback in order to improve the communication efficiency. Based on rate- splitting and decode-and-forward strategies, achievable secrecy rate regions are derived for both discrete memoryless and Gaussian channels. Results show that channel feedback improves the achievable secrecy rates.

Connected through hyperedge HE-1 (induced by source paper "multiple access wiretap channel with noiseless feedback"):
  with members:
    - "the gaussian multiple access wire tap channel"

Connected through hyperedge HE-2 (induced by source paper "individual secrecy for broadcast channels with receiver side information"):
  with members:
    - "secure multiplex coding with dependent and non uniform multiple messages"
    - "strong secrecy for cooperative broadcast channels"
    - "individual secrecy for the broadcast channel"
    - "secrecy capacity region of some classes of wiretap broadcast channels"
    - "capacity regions for broadcast channels with degraded message sets and message cognition under different secrecy constraints"
    - "on block security of regenerating codes at the mbr point for distributed storage systems"
    - "effective secrecy reliability confusion and stealth"
    - "new results on multiple input multiple output broadcast channels with confidential messages"

Connected through hyperedge HE-3 (induced by source paper "the wiretap channel with generalized feedback secure communication and key generation"):
  with members:
    - "secret communication over broadcast erasure channels with state feedback"
    - "secret key generation using correlated sources and channels"
    - "on the achievable rate region of a new wiretap channel with side information"
    - "secrecy via sources and channels"
    - "secrecy degrees of freedom of mimo broadcast channels with delayed csit"
    - "the role of feedback in two way secure communications"
    - "the wiretap channel with feedback encryption over the channel"
    - "secret communication with feedback"

Connected through hyperedge HE-4 (induced by source paper "capacity regions for broadcast channels with degraded message sets and message cognition under different secrecy constraints"):
  with members:
    - "individual secrecy for broadcast channels with receiver side information"
    - "effective secrecy reliability confusion and stealth"
    - "strong secrecy from channel resolvability"
    - "broadcast capacity region of two phase bidirectional relaying"
    - "the gaussian multiple access wire tap channel"
    - "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 "multiple access channel with common message and secrecy constraint"):
  with members:
    - "compound multiple access channel with confidential messages"
    - "compound multiple access channels with partial cooperation"
    - "discrete memoryless interference and broadcast channels with confidential messages secrecy rate regions"
    - "the discrete memoryless multiple access channel with confidential messages"
    - "the gaussian multiple access wire tap channel"

Connected through hyperedge HE-6 (induced by source paper "compound multiple access channel with confidential messages"):
  with members:
    - "compound multiple access channels with partial cooperation"
    - "the discrete memoryless multiple access channel with confidential messages"

Connected through hyperedge HE-7 (induced by source paper "strong secrecy for multiple access channels"):
  with members:
    - "secrecy results for compound wiretap channels"
    - "the arbitrarily varying multiple access channel with conferencing encoders"
    - "strongly secure communications over the two way wiretap channel"
    - "mimo wiretap channels with arbitrarily varying eavesdropper channel states"
    - "the compound multiple access channel with partially cooperating encoders"
    - "fading cognitive multiple access channels with confidential messages"
    - "the discrete memoryless multiple access channel with confidential messages"
    - "the gaussian multiple access wire tap channel"

Connected through hyperedge HE-8 (induced by source paper "interference assisted secret communication"):
  with members:
    - "interference alignment for secrecy"
    - "providing secrecy with structured codes tools and applications to two user gaussian channels"
    - "a new outer bound and the noisy interference sum rate capacity for gaussian interference channels"
    - "capacity bounds for the gaussian interference channel"
    - "discrete memoryless interference and broadcast channels with confidential messages secrecy rate regions"
    - "sum capacity of the gaussian interference channel in the low interference regime"
    - "gaussian interference channel capacity to within one bit"
    - "cognitive interference 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)