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: "classifying the clique width of h free bipartite graphs"
  Abstract: Let $G$ be a bipartite graph, and let $H$ be a bipartite graph with a fixed bipartition $(B_H,W_H)$. We consider three different, natural ways of forbidding $H$ as an induced subgraph in $G$. First, $G$ is $H$-free if it does not contain $H$ as an induced subgraph. Second, $G$ is strongly $H$-free if $G$ is $H$-free or else has no bipartition $(B_G,W_G)$ with $B_H\subseteq B_G$ and $W_H\subseteq W_G$. Third, $G$ is weakly $H$-free if $G$ is $H$-free or else has at least one bipartition $(B_G,W_G)$ with $B_H\not\subseteq B_G$ or $W_H\not\subseteq W_G$. Lozin and Volz characterized all bipartite graphs $H$ for which the class of strongly $H$-free bipartite graphs has bounded clique-width. We extend their result by giving complete classifications for the other two variants of $H$-freeness.

Connected through hyperedge HE-1 (induced by source paper "on efficient domination for some classes of h free bipartite graphs"):
  with members:
    - "polynomial time algorithms for weighted efficient domination problems in at free graphs and dually chordal graphs"
    - "efficient domination for some subclasses of p_6 free graphs in polynomial time"
    - "weighted efficient domination for p_5 kp_2 free graphs in polynomial time"
    - "the dilworth number of auto chordal bipartite graphs"
    - "new polynomial cases of the weighted efficient domination problem"
    - "efficient dominating and edge dominating sets for graphs and hypergraphs"

Connected through hyperedge HE-2 (induced by source paper "clique width for graph classes closed under complementation"):
  with members:
    - "the behavior of clique width under graph operations and graph transformations"
    - "hereditary graph classes when the complexities of colouring and clique cover coincide"
    - "bounding the clique width of h free chordal graphs"
    - "colouring diamond free graphs"
    - "isomorphism testing for graphs of bounded rank width"
    - "bounding the clique width of h free split graphs"
    - "bounding clique width via perfect graphs"
    - "clique width of graph classes defined by two forbidden induced subgraphs"

Connected through hyperedge HE-3 (induced by source paper "induced minor free graphs isomorphism and clique width"):
  with members:
    - "graph isomorphism in quasipolynomial time"
    - "isomorphism testing for graphs of bounded rank width"
    - "clique width of graph classes defined by two forbidden induced subgraphs"
    - "reduction techniques for graph isomorphism in the context of width parameters"
    - "towards an isomorphism dichotomy for hereditary graph classes"
    - "fixed parameter tractable canonization and isomorphism test for graphs of bounded treewidth"
    - "clique width and edge contraction"
    - "graph isomorphism for graph classes characterized by two forbidden induced subgraphs"

Connected through hyperedge HE-4 (induced by source paper "hereditary graph classes when the complexities of colouring and clique cover coincide"):
  with members:
    - "clique width for graph classes closed under complementation"
    - "solving the clique cover problem on bull c_4 free graphs"
    - "colouring diamond free graphs"
    - "complexity of coloring graphs without paths and cycles"
    - "the coloring problem for classes with two small obstructions"

Connected through hyperedge HE-5 (induced by source paper "bounded clique width of s_ 1 2 2 triangle free graphs"):
  with members:
    - "colouring diamond free graphs"

Connected through hyperedge HE-6 (induced by source paper "colouring diamond free graphs"):
  with members:
    - "the behavior of clique width under graph operations and graph transformations"
    - "induced minor free graphs isomorphism and clique width"
    - "bounding the clique width of h free chordal graphs"
    - "bounding the clique width of h free split graphs"
    - "bounding clique width via perfect graphs"
    - "clique width of graph classes defined by two forbidden induced subgraphs"
    - "a survey on the computational complexity of colouring graphs with forbidden subgraphs"
    - "towards an isomorphism dichotomy for hereditary graph classes"

Connected through hyperedge HE-7 (induced by source paper "bounding the clique width of h free chordal graphs"):
  with members:
    - "the behavior of clique width under graph operations and graph transformations"
    - "colouring diamond free graphs"
    - "isomorphism testing for graphs of bounded rank width"
    - "bounding the clique width of h free split graphs"
    - "bounding clique width via perfect graphs"
    - "clique width of graph classes defined by two forbidden induced subgraphs"
    - "towards an isomorphism dichotomy for hereditary graph classes"
    - "a sat approach to clique width"

Connected through hyperedge HE-8 (induced by source paper "bounding the clique width of h free split graphs"):
  with members:
    - "the behavior of clique width under graph operations and graph transformations"
    - "bounding the clique width of h free chordal graphs"
    - "isomorphism testing for graphs of bounded rank width"
    - "bounding clique width via perfect graphs"
    - "clique width of graph classes defined by two forbidden induced subgraphs"
    - "towards an isomorphism dichotomy for hereditary graph classes"
    - "graph isomorphism for graph classes characterized by two forbidden induced subgraphs"

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)