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: "flexible length polar codes through graph based augmentation"
  Abstract: The structure of polar codes inherently requires block lengths to be powers of two. In this paper, we investigate how different block lengths can be realized by coupling of several short-length polar codes. For this, we first analyze "code augmentation" to better protect the semipolarized channels, improving the BER performance under belief propagation decoding. Several serial and parallel augmentation schemes are discussed. A coding gain of $0.3$ dB at a BER of $10^{-5}$ can be observed for the same total rate and length. Further, we extend this approach towards coupling of several "sub-polar codes", leading to a reduced computational complexity and enabling the construction of flexible length polar codes.

Connected through hyperedge HE-1 (induced by source paper "crc aided belief propagation list decoding of polar codes"):
  with members:
    - "partially permuted multi trellis belief propagation for polar codes"
    - "on the decoding of polar codes on permuted factor graphs"
    - "neural belief propagation decoding of crc polar concatenated codes"
    - "belief propagation decoding of polar codes on permuted factor graphs"
    - "belief propagation list decoding of polar codes"
    - "decoding reed muller and polar codes by successive factor graph permutations"
    - "mitigating clipping effects on error floors under belief propagation decoding of polar codes"
    - "combining belief propagation and successive cancellation list decoding of polar codes on a gpu platform"

Connected through hyperedge HE-2 (induced by source paper "decoder tailored polar code design using the genetic algorithm"):
  with members:
    - "genetic algorithm based polar code construction for the awgn channel"
    - "design of polar codes in 5g new radio"
    - "belief propagation list decoding of polar codes"
    - "mitigating clipping effects on error floors under belief propagation decoding of polar codes"
    - "polar code construction for list decoding"
    - "comparison of polar decoders with existing low density parity check and turbo decoders"
    - "minimum distance based construction of multi kernel polar codes"
    - "improving belief propagation decoding of polar codes using scattered exit charts"

Connected through hyperedge HE-3 (induced by source paper "log logarithmic time pruned polar coding"):
  with members:
    - "polar like codes and asymptotic tradeoff among block length code rate and error probability"
    - "polar codes with exponentially small error at finite block length"
    - "general strong polarization"
    - "polar code moderate deviation recovering the scaling exponent"
    - "scaling exponent and moderate deviations asymptotics of polar codes for the awgn channel"
    - "relaxed polar codes"
    - "a packing lemma for polar codes"
    - "unified scaling of polar codes error exponent scaling exponent moderate deviations and error floors"

Connected through hyperedge HE-4 (induced by source paper "optimizing polar codes compatible with off the shelf ldpc decoders"):
  with members:
    - "design of polar codes in 5g new radio"
    - "belief propagation list decoding of polar codes"
    - "sparse graphs for belief propagation decoding of polar codes"
    - "code design for short blocks a survey"
    - "fast list decoders for polar codes"
    - "a rm polar codes"
    - "from polar to reed muller codes a technique to improve the finite length performance"
    - "polar codes with dynamic frozen symbols and their decoding by directed search"

Connected through hyperedge HE-5 (induced by source paper "polar like codes and asymptotic tradeoff among block length code rate and error probability"):
  with members:
    - "performance bounds of concatenated polar coding schemes"
    - "scaling exponent and moderate deviations asymptotics of polar codes for the awgn channel"
    - "relaxed polar codes"
    - "minimum distance based construction of multi kernel polar codes"
    - "multi kernel polar codes proof of polarization and error exponents"
    - "a note on some inequalities used in channel polarization and polar coding"
    - "near optimal finite length scaling for polar codes over large alphabets"
    - "multi kernel construction of polar codes"

Connected through hyperedge HE-6 (induced by source paper "belief propagation decoding of polar codes on permuted factor graphs"):
  with members:
    - "mitigating clipping effects on error floors under belief propagation decoding of polar codes"
    - "rnn decoding of linear block codes"
    - "partitioned successive cancellation list decoding of polar codes"
    - "improving belief propagation decoding of polar codes using scattered exit charts"
    - "combining belief propagation and successive cancellation list decoding of polar codes on a gpu platform"
    - "list decoding of polar codes"
    - "how to construct polar codes"
    - "channel polarization a method for constructing capacity achieving codes for symmetric binary input memoryless channels"

Connected through hyperedge HE-7 (induced by source paper "log logarithmic time pruned polar coding on binary erasure channels"):
  with members:
    - "relaxed polar codes"
    - "a packing lemma for polar codes"
    - "on the origin of polar coding"
    - "fast polar decoders algorithm and implementation"
    - "polar codes speed of polarization and polynomial gap to capacity"
    - "spatially coupled ensembles universally achieve capacity under belief propagation"
    - "moderate deviations in channel coding"
    - "channel polarization a method for constructing capacity achieving codes for symmetric binary input memoryless channels"

Connected through hyperedge HE-8 (induced by source paper "mitigating clipping effects on error floors under belief propagation decoding of polar codes"):
  with members:
    - "comparison of polar decoders with existing low density parity check and turbo decoders"
    - "on deep learning based channel decoding"
    - "improving belief propagation decoding of polar codes using scattered exit charts"
    - "combining belief propagation and successive cancellation list decoding of polar codes on a gpu platform"
    - "reduced complexity belief propagation decoders for polar codes"
    - "unified scaling of polar codes error exponent scaling exponent moderate deviations and error floors"
    - "the effect of saturation on belief propagation decoding of ldpc codes"
    - "list decoding of polar 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)