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: "a macwilliams identity for convolutional codes the general case"
  Abstract: A MacWilliams Identity for convolutional codes will be established. It makes use of the weight adjacency matrices of the code and its dual, based on state space realizations (the controller canonical form) of the codes in question. The MacWilliams Identity applies to various notions of duality appearing in the literature on convolutional coding theory.

Connected through hyperedge HE-1 (induced by source paper "on the macwilliams identity for classical and quantum convolutional codes"):
  with members:
    - "correction of data and syndrome errors by stabilizer codes"
    - "normal factor graphs and holographic transformations"
    - "on the macwilliams identity for convolutional codes"
    - "on the weight distribution of convolutional codes"

Connected through hyperedge HE-2 (induced by source paper "normal factor graphs and holographic transformations"):
  with members:
    - "on holant theorem and its proof"
    - "codes on graphs duality and macwilliams identities"
    - "loop calculus and belief propagation for q ary alphabet loop tower"

Connected through hyperedge HE-3 (induced by source paper "macwilliams identities for terminated convolutional codes"):
  with members:
    - "on the macwilliams identity for convolutional codes"

Connected through hyperedge HE-4 (induced by source paper "on isometries for convolutional codes"):
  with members:
    - "on the macwilliams identity for convolutional codes"
    - "state space realizations and monomial equivalence for convolutional codes"
    - "on the weight distribution of convolutional codes"

Connected through hyperedge HE-5 (induced by source paper "codes on graphs duality and macwilliams identities"):
  with members:
    - "normal factor graphs and holographic transformations"
    - "macwilliams identities for terminated convolutional codes"
    - "on the macwilliams identity for convolutional codes"

Connected through hyperedge HE-6 (induced by source paper "macwilliams identities for codes on graphs"):
  with members:
    - "on the macwilliams identity for convolutional 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)