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: "constant compositions in the sphere packing bound for classical quantum channels"
  Abstract: The sphere packing bound, in the form given by Shannon, Gallager and Berlekamp, was recently extended to classical-quantum channels, and it was shown that this creates a natural setting for combining probabilistic approaches with some combinatorial ones such as the Lov\'asz theta function. In this paper, we extend the study to the case of constant composition codes. We first extend the sphere packing bound for classical-quantum channels to this case, and we then show that the obtained result is related to a variation of the Lov\'asz theta function studied by Marton. We then propose a further extension to the case of varying channels and codewords with a constant conditional composition given a particular sequence. This extension is then applied to auxiliary channels to deduce a bound which can be interpreted as an extension of the Elias bound.

Connected through hyperedge HE-1 (induced by source paper "a simple derivation of the refined sphere packing bound under certain symmetry hypotheses"):
  with members:
    - "on exact asymptotics of the error probability in channel coding symmetric channels"
    - "a simple derivation of the refined spb for the constant composition codes"
    - "error probability bounds for gaussian channels under maximal and average power constraints"
    - "the renyi capacity and center"
    - "saddlepoint approximations for short packet wireless communications"
    - "the sphere packing bound for memoryless channels"
    - "the sphere packing bound for dspcs with feedback a la augustin"
    - "the augustin capacity and center"

Connected through hyperedge HE-2 (induced by source paper "a simple derivation of the refined spb for the constant composition codes"):
  with members:
    - "the sphere packing bound for memoryless channels"
    - "the augustin capacity and center"
    - "the sphere packing bound via augustin s method"
    - "renyi divergence and kullback leibler divergence"
    - "lower bounds on the probability of error for classical and classical quantum channels"
    - "refinement of the sphere packing bound asymmetric channels"

Connected through hyperedge HE-3 (induced by source paper "the sphere packing bound for memoryless channels"):
  with members:
    - "on exact asymptotics of the error probability in channel coding symmetric channels"
    - "a simple derivation of the refined spb for the constant composition codes"
    - "the renyi capacity and center"
    - "saddlepoint approximations for short packet wireless communications"
    - "the augustin capacity and center"
    - "the augustin center and the sphere packing bound for memoryless channels"
    - "the capacity of gaussian mimo channels under total and per antenna power constraints"
    - "the sphere packing bound via augustin s method"

Connected through hyperedge HE-4 (induced by source paper "the augustin capacity and center"):
  with members:
    - "the renyi capacity and center"
    - "the sphere packing bound for memoryless channels"
    - "the augustin center and the sphere packing bound for memoryless channels"
    - "exponent function for stationary memoryless channels with input cost at rates above the capacity"
    - "the sphere packing bound via augustin s method"
    - "channels with cost constraints strong converse and dispersion"
    - "renyi divergence and kullback leibler divergence"
    - "on pinsker s and vajda s type inequalities for csiszar s f divergences"

Connected through hyperedge HE-5 (induced by source paper "the sphere packing bound via augustin s method"):
  with members:
    - "the renyi capacity and center"
    - "the sphere packing bound for memoryless channels"
    - "the sphere packing bound for dspcs with feedback a la augustin"
    - "the augustin capacity and center"
    - "the augustin center and the sphere packing bound for memoryless channels"
    - "strong converse theorems for classes of multimessage multicast networks a renyi divergence approach"
    - "f divergence inequalities"
    - "exact asymptotics for the random coding error probability"

Connected through hyperedge HE-6 (induced by source paper "elias bound for general distances and stable sets in edge weighted graphs"):
  with members:
    - "an elias bound on the bhattacharyya distance of codes for channels with a zero error capacity"
    - "lower bounds on the probability of error for classical and classical quantum 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)