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: "space time block codes from nonassociative division algebras"
  Abstract: Associative division algebras are a rich source of fully diverse space-time block codes (STBCs). In this paper the systematic construction of fully diverse STBCs from nonassociative algebras is discussed. As examples, families of fully diverse $2\times 2$, $2\times 4$ multiblock   and $4\times 4$ STBCs#R##N#are designed, employing nonassociative quaternion division algebras.

Connected through hyperedge HE-1 (induced by source paper "the nonassociative algebras used to build fast decodable space time block codes"):
  with members:
    - "fast decodable asymmetric space time codes from division algebras"
    - "iterated space time code constructions from cyclic algebras"
    - "minimizing the complexity of fast sphere decoding of stbcs"

Connected through hyperedge HE-2 (induced by source paper "fast decodable mido codes with large coding gain"):
  with members:
    - "fast decodable asymmetric space time codes from division algebras"
    - "an enhanced dmt optimality criterion for stbc schemes for asymmetric mimo systems"
    - "iterated space time code constructions from cyclic algebras"
    - "improved perfect space time block codes"
    - "a family of fast decodable mido codes from crossed product algebras over q"
    - "maximal orders in the design of dense space time lattice codes"
    - "on fast decodable space time block codes"

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)