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: "searching of gapped repeats and subrepetitions in a word"
  Abstract: A gapped repeat is a factor of the form $uvu$ where $u$ and $v$ are nonempty words. The period of the gapped repeat is defined as $|u|+|v|$. The gapped repeat is maximal if it cannot be extended to the left or to the right by at least one letter with preserving its period. The gapped repeat is called $\alpha$-gapped if its period is not greater than $\alpha |v|$. A $\delta$-subrepetition is a factor which exponent is less than 2 but is not less than $1+\delta$ (the exponent of the factor is the quotient of the length and the minimal period of the factor). The $\delta$-subrepetition is maximal if it cannot be extended to the left or to the right by at least one letter with preserving its minimal period. We reveal a close relation between maximal gapped repeats and maximal subrepetitions. Moreover, we show that in a word of length $n$ the number of maximal $\alpha$-gapped repeats is bounded by $O(\alpha^2n)$ and the number of maximal $\delta$-subrepetitions is bounded by $O(n/\delta^2)$. Using the obtained upper bounds, we propose algorithms for finding all maximal $\alpha$-gapped repeats and all maximal $\delta$-subrepetitions in a word of length $n$. The algorithm for finding all maximal $\alpha$-gapped repeats has $O(\alpha^2n)$ time complexity for the case of constant alphabet size and $O(n\log n + \alpha^2n)$ time complexity for the general case. For finding all maximal $\delta$-subrepetitions we propose two algorithms. The first algorithm has $O(\frac{n\log\log n}{\delta^2})$ time complexity for the case of constant alphabet size and $O(n\log n +\frac{n\log\log n}{\delta^2})$ time complexity for the general case. The second algorithm has $O(n\log n+\frac{n}{\delta^2}\log \frac{1}{\delta})$ expected time complexity.

Connected through hyperedge HE-1 (induced by source paper "matching patterns with variables"):
  with members:
    - "graph and string parameters connections between pathwidth cutwidth and the locality number"
    - "quadratic word equations with length constraints counter systems and presburger arithmetic with divisibility"
    - "the hardness of solving simple word equations"
    - "the runs theorem"
    - "decidability complexity and expressiveness of first order logic over the subword ordering"
    - "detecting one variable patterns"
    - "solutions of word equations over partially commutative structures"
    - "a parameterized study of maximum generalized pattern matching problems"

Connected through hyperedge HE-2 (induced by source paper "efficient representation and counting of antipower factors in words"):
  with members:
    - "anti powers in infinite words"
    - "algorithms for anti powers in strings"
    - "the runs theorem"

Connected through hyperedge HE-3 (induced by source paper "on the number of gapped repeats with arbitrary gap"):
  with members:
    - "the runs theorem"
    - "efficiently finding all maximal alpha gapped repeats"
    - "longest gapped repeats and palindromes"
    - "on primary and secondary repetitions in words"
    - "on the maximal sum of exponents of runs in a string"

Connected through hyperedge HE-4 (induced by source paper "in place longest common extensions"):
  with members:
    - "small space encoding lce data structure with constant time queries"
    - "burrows wheeler transform and lcp array construction in constant space"
    - "optimal time and space construction of suffix arrays and lcp arrays for integer alphabets"
    - "fast longest common extensions in small space"
    - "optimal in place suffix sorting"
    - "tight lower bounds for the longest common extension problem"
    - "dynamic index lz factorization and lce queries in compressed space"
    - "longest common extensions in sublinear space"

Connected through hyperedge HE-5 (induced by source paper "fast longest common extensions in small space"):
  with members:
    - "dynamic index lz factorization and lce queries in compressed space"
    - "longest common extensions in sublinear space"

Connected through hyperedge HE-6 (induced by source paper "optimal searching of gapped repeats in a word"):
  with members:
    - "the runs theorem"
    - "longest gapped repeats and palindromes"
    - "beyond the runs theorem"
    - "lempel ziv factorization may be harder than computing all runs"
    - "on primary and secondary repetitions in words"
    - "on the maximal sum of exponents of runs in a string"
    - "on maximal repetitions of arbitrary exponent"

Connected through hyperedge HE-7 (induced by source paper "longest gapped repeats and palindromes"):
  with members:
    - "optimal searching of gapped repeats in a word"
    - "lempel ziv factorization may be harder than computing all runs"
    - "pattern matching in lempel ziv compressed strings fast simple and deterministic"
    - "a minimal periods algorithm with applications"

Connected through hyperedge HE-8 (induced by source paper "lempel ziv factorization may be harder than computing all runs"):
  with members:
    - "faster compact on line lempel ziv factorization"
    - "lempel ziv parsing in external memory"
    - "on primary and secondary repetitions in words"
    - "on the maximal sum of exponents of runs in a string"

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.FL(Formal Languages and Automata Theory)