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: "optimal listing of cycles and st paths in undirected graphs"
  Abstract: We present the first optimal algorithm for the classical problem of listing all the cycles in an undirected graph. We exploit their properties so that the total cost is the time taken to read the input graph plus the time to list the output, namely, the edges in each of the cycles. The algorithm uses a reduction to the problem of listing all the paths from a vertex s to a vertex t which we also solve optimally.

Connected through hyperedge HE-1 (induced by source paper "efficient enumeration of dominating sets for sparse graphs"):
  with members:
    - "output polynomial enumeration on graphs of bounded local linear mim width"
    - "on the enumeration of minimal dominating sets and related notions"
    - "efficient enumeration of induced subtrees in a k degenerate graph"
    - "a polynomial delay algorithm for enumerating minimal dominating sets in chordal graphs"
    - "polynomial delay algorithm for listing minimal edge dominating sets in graphs"
    - "new results on monotone dualization and generating hypergraph transversals"

Connected through hyperedge HE-2 (induced by source paper "efficient enumeration of bipartite subgraphs in graphs"):
  with members:
    - "enumeration of enumeration algorithms"
    - "efficient enumeration of induced subtrees in a k degenerate graph"
    - "listing all maximal cliques in large sparse real world graphs"
    - "listing all maximal cliques in sparse graphs in near optimal time"

Connected through hyperedge HE-3 (induced by source paper "efficiently listing bounded length st paths"):
  with members:
    - "amortized tilde o v delay algorithm for listing chordless cycles in undirected graphs"

Connected through hyperedge HE-4 (induced by source paper "efficient enumeration of induced subtrees in a k degenerate graph"):
  with members:
    - "amortized tilde o v delay algorithm for listing chordless cycles in undirected graphs"

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)