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: "default logic and bounded treewidth"
  Abstract: In this paper, we study Reiter's propositional default logic when the treewidth of a certain graph representation (semi-incidence graph) of the input theory is bounded. We establish a dynamic programming algorithm on tree decompositions that decides whether a theory has a consistent stable extension or can even be used to enumerate all generating defaults that lead to stable extensions. We show that, for input theories whose semi-incidence graph has bounded treewidth, our algorithm decides whether a theory has a stable extension in linear time and enumerates all characteristic generating defaults with linear delay.

Connected through hyperedge HE-1 (induced by source paper "answer set solving exploiting treewidth and its limits"):
  with members:
    - "asp core 2 input language format"
    - "te eth lower bounds for qbfs of bounded treewidth"
    - "exploiting treewidth for projected model counting and its limits"
    - "counting complexity for reasoning in abstract argumentation"
    - "slightly superexponential parameterized problems"
    - "dynasp2 5 dynamic programming on tree decompositions in action"
    - "answer set solving with bounded treewidth revisited"

Connected through hyperedge HE-2 (induced by source paper "enumeration in incremental fpt time"):
  with members:
    - "efficient enumeration of solutions produced by closure operations"
    - "paradigms for parameterized enumeration"
    - "new results on monotone dualization and generating hypergraph transversals"

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.AI(Artificial Intelligence)