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 subquadratic algorithm for minimum palindromic factorization"
  Abstract: We give an $\mathcal{O}(n \log n)$-time, $\mathcal{O}(n)$-space algorithm for factoring a string into the minimum number of palindromic substrings. That is, given a string $S [1..n]$, in $\mathcal{O}(n \log n)$ time our algorithm returns the minimum number of palindromes $S_1,\ldots, S_\ell$ such that $S = S_1 \cdots S_\ell$. We also show that the time complexity is $\mathcal{O}(n)$ on average and $\Omega(n\log n)$ in the worst case. The last result is based on a characterization of the palindromic structure of Zimin words.

Connected through hyperedge HE-1 (induced by source paper "palindromic k factorization in pure linear time"):
  with members:
    - "sturmian numeration systems and decompositions to palindromes"
    - "eertree an efficient data structure for processing palindromes in strings"

Connected through hyperedge HE-2 (induced by source paper "prefix palindromic length of the thue morse word"):
  with members:
    - "sturmian numeration systems and decompositions to palindromes"
    - "eertree an efficient data structure for processing palindromes in strings"
    - "enumeration and decidable properties of automatic sequences"

Connected through hyperedge HE-3 (induced by source paper "block palindromes a new generalization of palindromes"):
  with members:
    - "computing longest single arm gapped palindromes in a string"

Connected through hyperedge HE-4 (induced by source paper "palindromic decompositions with gaps and errors"):
  with members:
    - "eertree an efficient data structure for processing palindromes in strings"

Connected through hyperedge HE-5 (induced by source paper "shortest unique palindromic substring queries in optimal time"):
  with members:
    - "diverse palindromic factorization is np complete"
    - "eertree an efficient data structure for processing palindromes in strings"
    - "an in place framework for exact and approximate shortest unique substring queries"
    - "shortest unique substring query revisited"

Connected through hyperedge HE-6 (induced by source paper "diverse palindromic factorization is np complete"):
  with members:
    - "tight tradeoffs for real time approximation of longest palindromes in streams"

Connected through hyperedge HE-7 (induced by source paper "eertree an efficient data structure for processing palindromes in strings"):
  with members:
    - "finding distinct subpalindromes online"

Connected through hyperedge HE-8 (induced by source paper "mathrm pal k is linear recognizable online"):
  with members:
    - "finding distinct subpalindromes online"
    - "fast context free grammar parsing requires fast boolean matrix multiplication"

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.DS(Data Structures and Algorithms)