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: "interleaved product ldpc codes"
  Abstract: Product LDPC codes take advantage of LDPC decoding algorithms and the high minimum distance of product codes. We propose to add suitable interleavers to improve the waterfall performance of LDPC decoding. Interleaving also reduces the number of low weight codewords, that gives a further advantage in the error floor region.

Connected through hyperedge HE-1 (induced by source paper "inter frame coding for broadcast communication"):
  with members:
    - "irregular product codes"

Connected through hyperedge HE-2 (induced by source paper "improving the efficiency of the ldpc code based mceliece cryptosystem through irregular codes"):
  with members:
    - "security and complexity of the mceliece cryptosystem based on quasi cyclic low density parity check codes"
    - "optimization of the parity check matrix density in qc ldpc code based mceliece cryptosystems"
    - "coding with scrambling concatenation and harq for the awgn wire tap channel a security gap analysis"
    - "progressive differences convolutional low density parity check codes"
    - "scaling efficient code based cryptosystems for embedded platforms"
    - "on a family of circulant matrices for quasi cyclic low density generator matrix codes"
    - "construction of near optimum burst erasure correcting low density parity check codes"

Connected through hyperedge HE-3 (induced by source paper "advanced channel coding for space mission telecommand links"):
  with members:
    - "progressive differences convolutional low density parity check codes"
    - "on a family of circulant matrices for quasi cyclic low density generator matrix codes"
    - "an improved sphere packing bound for finite length codes on symmetric memoryless 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)