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: "fixed parameter tractable canonization and isomorphism test for graphs of bounded treewidth"
  Abstract: We give a fixed-parameter tractable algorithm that, given a parameter $k$ and two graphs $G_1,G_2$, either concludes that one of these graphs has treewidth at least $k$, or determines whether $G_1$ and $G_2$ are isomorphic. The running time of the algorithm on an $n$-vertex graph is $2^{O(k^5\log k)}\cdot n^5$, and this is the first fixed-parameter algorithm for Graph Isomorphism parameterized by treewidth. #R##N#Our algorithm in fact solves the more general canonization problem. We namely design a procedure working in $2^{O(k^5\log k)}\cdot n^5$ time that, for a given graph $G$ on $n$ vertices, either concludes that the treewidth of $G$ is at least $k$, or: * finds in an isomorphic-invariant way a graph $\mathfrak{c}(G)$ that is isomorphic to $G$; * finds an isomorphism-invariant construction term --- an algebraic expression that encodes $G$ together with a tree decomposition of $G$ of width $O(k^4)$. #R##N#Hence, the isomorphism test reduces to verifying whether the computed isomorphic copies or the construction terms for $G_1$ and $G_2$ are equal.

Connected through hyperedge HE-1 (induced by source paper "computing the frechet distance of trees and graphs of bounded tree width"):
  with members:
    - "an improved isomorphism test for bounded tree width graphs"
    - "can we compute the similarity between surfaces"

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 faster isomorphism test for graphs of small degree"
    - "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"

Connected through hyperedge HE-3 (induced by source paper "canonisation and definability for graphs of bounded rank width"):
  with members:
    - "an improved isomorphism test for bounded tree width graphs"
    - "definable decompositions for graphs of bounded linear cliquewidth"
    - "the weisfeiler leman dimension of planar graphs is at most 3"
    - "computing with tangles"
    - "isomorphism testing for graphs of bounded rank width"
    - "structure theorem and isomorphism test for graphs with excluded topological subgraphs"
    - "capturing polynomial time on interval graphs"

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"
    - "a faster isomorphism test for graphs of small degree"
    - "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"

Connected through hyperedge HE-5 (induced by source paper "a faster isomorphism test for graphs of small degree"):
  with members:
    - "an improved isomorphism test for bounded tree width graphs"
    - "graph isomorphism in quasipolynomial time"
    - "graph isomorphism for graph classes characterized by two forbidden induced subgraphs"
    - "structure theorem and isomorphism test for graphs with excluded topological subgraphs"

Connected through hyperedge HE-6 (induced by source paper "an adaptive prefix assignment technique for symmetry reduction"):
  with members:
    - "an improved isomorphism test for bounded tree width graphs"
    - "generating families of practical fast matrix multiplication algorithms"
    - "graph isomorphism in quasipolynomial time"
    - "breaking symmetries in graph search with canonizing sets"
    - "a framework for practical parallel fast matrix multiplication"
    - "practical graph isomorphism ii"

Connected through hyperedge HE-7 (induced by source paper "on the parallel parameterized complexity of the graph isomorphism problem"):
  with members:
    - "capturing polynomial time using modular decomposition"
    - "deciding circular arc graph isomorphism in parameterized logspace"
    - "fast parallel fixed parameter algorithms via color coding"
    - "canonizing graphs of bounded tree width in logspace"
    - "graph isomorphism in quasipolynomial time"
    - "graph isomorphism parameterized by elimination distance to bounded degree"

Connected through hyperedge HE-8 (induced by source paper "graph isomorphism restricted by lists"):
  with members:
    - "algorithmic aspects of regular graph covers"
    - "induced minor free graphs isomorphism and clique width"
    - "polynomial time algorithm for isomorphism of graphs with clique width at most three"
    - "canonizing graphs of bounded tree width in logspace"
    - "graph isomorphism in quasipolynomial time"
    - "graph isomorphism completeness for trapezoid graphs"
    - "graph isomorphism for bounded genus graphs in linear time"
    - "iv matching is strongly np hard"

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)