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 faster isomorphism test for graphs of small degree"
  Abstract: Luks's algorithm (JCSS 1982) to test isomorphism of bounded degree graphs in polynomial time is one of the most important results in the context of the Graph Isomorphism Problem and has been repeatedly used as a basic building block for many other algorithms. In particular, for graphs of logarithmic degree, Babai's quasipolynomial isomorphism test (STOC 2016) essentially boils down to Luks's algorithm, and any improvement of Babai's algorithm requires an improved isomorphism test for graphs of (poly)logarithmic degree. #R##N#In this work, we obtain such an improvement: we give an algorithm that solves the Graph Isomorphism Problem in time $n^{\mathcal{O}((\log d)^{c})}$, where $n$ is the number of vertices of the input graphs, $d$ is the maximum degree of the input graphs, and $c$ is an absolute constant. The best previous isomorphism test for graphs of maximum degree $d$ due to Babai, Kantor and Luks (FOCS 1983) runs in time $n^{\mathcal{O}(d/ \log d)}$. Our result generalizes the quasipolynomial-time algorithm for the general isomorphism problem due to Babai.

Connected through hyperedge HE-1 (induced by source paper "hypergraph isomorphism for groups with restricted composition factors"):
  with members:
    - "graph isomorphism in quasipolynomial time parameterized by treewidth"
    - "an improved isomorphism test for bounded tree width graphs"
    - "a unifying method for the design of algorithms canonizing combinatorial objects"
    - "graph isomorphism for unit square graphs"
    - "graph isomorphism in quasipolynomial time"
    - "graph isomorphism for bounded genus graphs in linear time"
    - "tight lower and upper bounds for the complexity of canonical colour refinement"
    - "isomorphism testing for graphs of bounded rank width"

Connected through hyperedge HE-2 (induced by source paper "graph isomorphism in quasipolynomial time parameterized by treewidth"):
  with members:
    - "hypergraph isomorphism for groups with restricted composition factors"
    - "an improved isomorphism test for bounded tree width graphs"
    - "a unifying method for the design of algorithms canonizing combinatorial objects"
    - "minimum circuit size graph isomorphism and related problems"
    - "canonizing graphs of bounded tree width in logspace"
    - "graph isomorphism in quasipolynomial time"
    - "graph isomorphism for bounded genus graphs in linear time"
    - "fixed parameter tractable canonization and isomorphism test for graphs of bounded treewidth"

Connected through hyperedge HE-3 (induced by source paper "learning concepts definable in first order logic with counting"):
  with members:
    - "learning first order definable concepts over structures of small degree"
    - "first order logic with counting at least weak hanf normal forms always exist and can be computed"
    - "first order query evaluation with cardinality conditions"

Connected through hyperedge HE-4 (induced by source paper "graph isomorphism for h_1 h_2 free graphs an almost complete dichotomy"):
  with members:
    - "canonisation and definability for graphs of bounded rank width"
    - "an improved isomorphism test for bounded tree width graphs"
    - "clique width for graph classes closed under complementation"
    - "graph isomorphism for unit square graphs"
    - "induced minor free graphs isomorphism and clique width"
    - "bounding the clique width of h free chordal graphs"
    - "colouring diamond free graphs"
    - "isomorphism testing for graphs of bounded rank width"

Connected through hyperedge HE-5 (induced by source paper "a unifying method for the design of algorithms canonizing combinatorial objects"):
  with members:
    - "an improved isomorphism test for bounded tree width graphs"
    - "minimum circuit size graph isomorphism and related problems"
    - "polynomial time isomorphism test of groups that are tame extensions"
    - "isomorphism testing for graphs of bounded rank width"
    - "beating the generator enumeration bound for p group isomorphism"
    - "algorithms for group isomorphism via group extensions and cohomology"

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)