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: "perfect omniscience perfect secrecy and steiner tree packing"
  Abstract: We consider perfect secret key generation for a ``pairwise independent network'' model in which every pair of terminals share a random binary string, with the strings shared by distinct terminal pairs being mutually independent. The terminals are then allowed to communicate interactively over a public noiseless channel of unlimited capacity. All the terminals as well as an eavesdropper observe this communication. The objective is to generate a perfect secret key shared by a given set of terminals at the largest rate possible, and concealed from the eavesdropper. #R##N#First, we show how the notion of perfect omniscience plays a central role in characterizing perfect secret key capacity. Second, a multigraph representation of the underlying secrecy model leads us to an efficient algorithm for perfect secret key generation based on maximal Steiner tree packing. This algorithm attains capacity when all the terminals seek to share a key, and, in general, attains at least half the capacity. Third, when a single ``helper'' terminal assists the remaining ``user'' terminals in generating a perfect secret key, we give necessary and sufficient conditions for the optimality of the algorithm; also, a ``weak'' helper is shown to be sufficient for optimality.

Connected through hyperedge HE-1 (induced by source paper "secret key agreement for hypergraphical sources with limited total discussion"):
  with members:
    - "multiterminal secret key agreement with nearly no discussion"
    - "one shot perfect secret key agreement for finite linear sources"
    - "secrecy capacity under limited discussion rate for minimally connected hypergraphical sources"
    - "upper bounds via lamination on the constrained secrecy capacity of hypergraphical sources"
    - "multiterminal secret key agreement at asymptotically zero discussion rate"
    - "secret key agreement under discussion rate constraints"
    - "compressed secret key agreement maximizing multivariate mutual information per bit"
    - "on the optimality of secret key agreement via omniscience"

Connected through hyperedge HE-2 (induced by source paper "multiterminal secret key agreement with nearly no discussion"):
  with members:
    - "upper bounds via lamination on the constrained secrecy capacity of hypergraphical sources"
    - "multiterminal secret key agreement at asymptotically zero discussion rate"
    - "secret key agreement under discussion rate constraints"
    - "compressed secret key agreement maximizing multivariate mutual information per bit"
    - "on the optimality of secret key agreement via omniscience"
    - "bounds on the communication rate needed to achieve sk capacity in the hypergraphical source model"
    - "secret key generation with limited interaction"
    - "info clustering a mathematical theory for data clustering"

Connected through hyperedge HE-3 (induced by source paper "part i improving computational efficiency of communication for omniscience"):
  with members:
    - "part ii a practical approach for successive omniscience"
    - "improving computational efficiency of communication for omniscience and successive omniscience"
    - "secret key agreement under discussion rate constraints"
    - "a faster algorithm for asymptotic communication for omniscience"
    - "info clustering a mathematical theory for data clustering"
    - "on the public communication needed to achieve sk capacity in the multiterminal source model"
    - "efficient algorithms for the data exchange problem"
    - "coded cooperative data exchange in multihop networks"

Connected through hyperedge HE-4 (induced by source paper "optimal communication rates and combinatorial properties for distributed simulation"):
  with members:
    - "domain compression and its application to randomness optimal distributed goodness of fit"
    - "geometric lower bounds for distributed parameter estimation under communication constraints"
    - "coordination using individually shared randomness"
    - "distributed simulation and distributed inference"
    - "inference under information constraints i lower bounds from chi square contraction"
    - "resource efficient common randomness and secret key schemes"
    - "on the public communication needed to achieve sk capacity in the multiterminal source model"
    - "communication lower bounds for statistical estimation problems via a distributed data processing inequality"

Connected through hyperedge HE-5 (induced by source paper "one shot perfect secret key agreement for finite linear sources"):
  with members:
    - "multiterminal secret key agreement with nearly no discussion"
    - "upper bounds via lamination on the constrained secrecy capacity of hypergraphical sources"
    - "multiterminal secret key agreement at asymptotically zero discussion rate"
    - "secret key agreement under discussion rate constraints"
    - "on the optimality of secret key agreement via omniscience"
    - "secret key generation with limited interaction"
    - "on the public communication needed to achieve sk capacity in the multiterminal source model"
    - "efficient algorithms for the data exchange problem"

Connected through hyperedge HE-6 (induced by source paper "wiretap secret key capacity of tree pin"):
  with members:
    - "secrecy capacity under limited discussion rate for minimally connected hypergraphical sources"
    - "secret key agreement under discussion rate constraints"
    - "on the optimality of secret key agreement via omniscience"
    - "the private key capacity of a cooperative pairwise independent network"
    - "the communication complexity of achieving sk capacity in a class of pin models"
    - "coded cooperative data exchange for a secret key"
    - "secret key generation for a pairwise independent network model"
    - "group secret key generation algorithms"

Connected through hyperedge HE-7 (induced by source paper "secret key generation for minimally connected hypergraphical sources"):
  with members:
    - "secrecy capacity under limited discussion rate for minimally connected hypergraphical sources"
    - "upper bounds via lamination on the constrained secrecy capacity of hypergraphical sources"
    - "secret key agreement under discussion rate constraints"
    - "on the optimality of secret key agreement via omniscience"
    - "bounds on the communication rate needed to achieve sk capacity in the hypergraphical source model"
    - "secret key generation with limited interaction"
    - "info clustering a mathematical theory for data clustering"
    - "on the public communication needed to achieve sk capacity in the multiterminal source model"

Connected through hyperedge HE-8 (induced by source paper "upper bounds via lamination on the constrained secrecy capacity of hypergraphical sources"):
  with members:
    - "multiterminal secret key agreement at asymptotically zero discussion rate"
    - "secret key agreement under discussion rate constraints"
    - "on the optimality of secret key agreement via omniscience"
    - "bounds on the communication rate needed to achieve sk capacity in the hypergraphical source model"
    - "secret key generation with limited interaction"
    - "incremental and decremental secret key agreement"
    - "on the public communication needed to achieve sk capacity in the multiterminal source model"
    - "coded cooperative data exchange for a secret key"

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)