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: "string reconstruction from substring compositions"
  Abstract: Motivated by mass-spectrometry protein sequencing, we consider a simply-stated problem of reconstructing a string from the multiset of its substring compositions. We show that all strings of length 7, one less than a prime, or one less than twice a prime, can be reconstructed uniquely up to reversal. For all other lengths we show that reconstruction is not always possible and provide sometimes-tight bounds on the largest number of strings with given substring compositions. The lower bounds are derived by combinatorial arguments and the upper bounds by algebraic considerations that precisely characterize the set of strings with the same substring compositions in terms of the factorization of bivariate polynomials. The problem can be viewed as a combinatorial simplification of the turnpike problem, and its solution may shed light on this long-standing problem as well. Using well known results on transience of multi-dimensional random walks, we also provide a reconstruction algorithm that reconstructs random strings over alphabets of size $\ge4$ in optimal near-quadratic time.

Connected through hyperedge HE-1 (induced by source paper "mass error correction codes for polymer based data storage"):
  with members:
    - "coded trace reconstruction"
    - "reconstruction and error correction codes for polymer based data storage"
    - "unique reconstruction of coded strings from multiset substring spectra"
    - "a rewritable random access dna based storage system"
    - "codes for dna sequence profiles"

Connected through hyperedge HE-2 (induced by source paper "coding for polymer based data storage"):
  with members:
    - "coded trace reconstruction"
    - "reconstruction and error correction codes for polymer based data storage"
    - "unique reconstruction of coded strings from multiset substring spectra"
    - "a rewritable random access dna based storage system"
    - "codes for dna sequence profiles"

Connected through hyperedge HE-3 (induced by source paper "reconstruction codes for dna sequences with uniform tandem duplication errors"):
  with members:
    - "bounds and constructions for multi symbol duplication error correcting codes"
    - "asymptotically optimal codes correcting fixed length duplication errors in dna storage systems"
    - "codes in the space of multisets coding for permutation channels with impairments"
    - "rank modulation codes for dna storage"
    - "duplication correcting codes"
    - "bounds on codes correcting tandem and palindromic duplications"
    - "coding for racetrack memories"
    - "codes in the damerau distance for dna storage"

Connected through hyperedge HE-4 (induced by source paper "reconstruction of strings from their substrings spectrum"):
  with members:
    - "repeat free codes"
    - "unique reconstruction of coded strings from multiset substring spectra"
    - "mutually uncorrelated codes for dna storage"
    - "partial dna assembly a rate distortion perspective"
    - "do read errors matter for genome assembly"
    - "optimal dna shotgun sequencing noisy reads are as good as noiseless reads"
    - "information theory of dna shotgun sequencing"

Connected through hyperedge HE-5 (induced by source paper "repeat free codes"):
  with members:
    - "mutually uncorrelated codes for dna storage"
    - "evolution of k mer frequencies and entropy in duplication and substitution mutation systems"
    - "list decoding of insertions and deletions"
    - "bounds on codes correcting tandem and palindromic duplications"
    - "rates of dna sequence profiles for practical values of read lengths"
    - "codes for dna sequence profiles"

Connected through hyperedge HE-6 (induced by source paper "reconstruction and error correction codes for polymer based data storage"):
  with members:
    - "unique reconstruction of coded strings from multiset substring spectra"
    - "a rewritable random access dna based storage system"
    - "codes for dna sequence profiles"

Connected through hyperedge HE-7 (induced by source paper "unique reconstruction of coded strings from multiset substring spectra"):
  with members:
    - "mutually uncorrelated codes for dna storage"
    - "on coding over sliced information"
    - "exact reconstruction from insertions in synchronization codes"
    - "codes correcting a burst of deletions or insertions"
    - "rates of dna sequence profiles for practical values of read lengths"
    - "a rewritable random access dna based storage system"
    - "codes for dna sequence profiles"

Connected through hyperedge HE-8 (induced by source paper "reconstructing point sets from distance distributions"):
  with members:
    - "solving complex quadratic systems with full rank random matrices"
    - "phase retrieval via wirtinger flow theory and algorithms"
    - "l1 projections with box constraints"

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.DM(Discrete Mathematics)