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: "efficient algorithms for the data exchange problem"
  Abstract: In this paper we study the data exchange problem where a set of users is interested in gaining access to a common file, but where each has only partial knowledge about it as side-information. Assuming that the file is broken into packets, the side-information considered is in the form of linear combinations of the file packets. Given that the collective information of all the users is sufficient to allow recovery of the entire file, the goal is for each user to gain access to the file while minimizing some communication cost. We assume that users can communicate over a noiseless broadcast channel, and that the communication cost is a sum of each user's cost function over the number of bits it transmits. For instance, the communication cost could simply be the total number of bits that needs to be transmitted. In the most general case studied in this paper, each user can have any arbitrary convex cost function. We provide deterministic, polynomial-time algorithms (in the number of users and packets) which find an optimal communication scheme that minimizes the communication cost. To further lower the complexity, we also propose a simple randomized algorithm inspired by our deterministic algorithm which is based on a random linear network coding scheme.

Connected through hyperedge HE-1 (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"
    - "coded cooperative data exchange in multihop networks"
    - "perfect omniscience perfect secrecy and steiner tree packing"

Connected through hyperedge HE-2 (induced by source paper "part ii a practical approach for successive omniscience"):
  with members:
    - "part i improving computational efficiency of communication for omniscience"
    - "attaining fairness in communication for omniscience"
    - "improving computational efficiency of communication for omniscience and successive omniscience"
    - "successive local and successive global omniscience"
    - "a practical approach for successive omniscience"
    - "universal multiparty data exchange and secret key agreement"
    - "a faster algorithm for asymptotic communication for omniscience"
    - "iterative merging algorithm for cooperative data exchange"

Connected through hyperedge HE-3 (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"
    - "coded cooperative data exchange for a secret key"

Connected through hyperedge HE-4 (induced by source paper "decentralized pliable index coding"):
  with members:
    - "tight information theoretic converse results for some pliable index coding problems"
    - "mds matrices over small fields a proof of the gm mds conjecture"
    - "capacity theorems for distributed index coding"
    - "the benefit of being flexible in distributed computation"
    - "the single uniprior index coding problem the single sender case and the multi sender extension"
    - "a polynomial time algorithm for pliable index coding"
    - "fundamental limits of caching in wireless d2d networks"
    - "coded cooperative data exchange in multihop networks"

Connected through hyperedge HE-5 (induced by source paper "improving computational efficiency of communication for omniscience and successive omniscience"):
  with members:
    - "a practical approach for successive omniscience"
    - "a faster algorithm for asymptotic communication for omniscience"
    - "iterative merging algorithm for cooperative data exchange"
    - "coded cooperative data exchange in multihop networks"
    - "on coding for cooperative data exchange"
    - "on tightness of mutual dependence upperbound for secret key capacity of multiple terminals"

Connected through hyperedge HE-6 (induced by source paper "a monetary mechanism for stabilizing cooperative data exchange with selfish users"):
  with members:
    - "a game theoretic perspective on communication for omniscience"
    - "coded cooperative data exchange for a secret key"
    - "coded cooperative data exchange in multihop networks"
    - "coded cooperative data exchange problem for general topologies"
    - "on coding for cooperative data exchange"

Connected through hyperedge HE-7 (induced by source paper "cooperative data exchange based on mds codes"):
  with members:
    - "successive local and successive global omniscience"
    - "universal multiparty data exchange and secret key agreement"
    - "cooperative data exchange with unreliable clients"
    - "balanced sparsest generator matrices for mds codes"
    - "coded cooperative data exchange in multihop networks"
    - "coded cooperative data exchange problem for general topologies"
    - "on coding for cooperative data exchange"

Connected through hyperedge HE-8 (induced by source paper "successive local and successive global omniscience"):
  with members:
    - "cooperative data exchange with unreliable clients"
    - "coded cooperative data exchange for a secret key"
    - "coded cooperative data exchange in multihop networks"
    - "coded cooperative data exchange problem for general topologies"

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)