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: "reasoning about cardinal directions between extended objects"
  Abstract: Direction relations between extended spatial objects are important commonsense knowledge. Recently, Goyal and Egenhofer proposed a relation model, known as the cardinal direction calculus (CDC), for representing direction relations between connected plane regions. The CDC is perhaps the most expressive qualitative calculus for directional information, and has attracted increasing interest from areas such as artificial intelligence, geographical information science, and image retrieval. Given a network of CDC constraints, the consistency problem is deciding if the network is realizable by connected regions in the real plane. This paper provides a cubic algorithm for checking the consistency of complete networks of basic CDC constraints, and proves that reasoning with the CDC is in general an NP-complete problem. For a consistent complete network of basic CDC constraints, our algorithm returns a 'canonical' solution in cubic time. This cubic algorithm is also adapted to check the consistency of complete networks of basic cardinal constraints between possibly disconnected regions.

Connected through hyperedge HE-1 (induced by source paper "reasoning about qualitative direction and distance between extended objects using answer set programming"):
  with members:
    - "a trajectory calculus for qualitative spatial reasoning using answer set programming"
    - "a survey of qualitative spatial and temporal calculi algebraic and computational properties"
    - "aspmt qs non monotonic spatial reasoning with answer set programming modulo theories"
    - "qualitative shape representation based on the qualitative relative direction and distance calculus eopram"

Connected through hyperedge HE-2 (induced by source paper "a survey of qualitative spatial and temporal calculi algebraic and computational properties"):
  with members:
    - "on redundant topological constraints"
    - "realizing rcc8 networks using convex regions"
    - "algebraic properties of qualitative spatio temporal calculi"
    - "from quantitative spatial operator to qualitative spatial relation using constructive solid geometry logic rules and optimized 9 im model a semantic based approach"
    - "spatial logics with connectedness predicates"
    - "the complexity of reasoning about spatial congruence"
    - "a complete classification of tractability in rcc 5"

Connected through hyperedge HE-3 (induced by source paper "on redundant topological constraints"):
  with members:
    - "on the decidability of connectedness constraints in 2d and 3d euclidean spaces"
    - "redundancy in logic i cnf propositional formulae"
    - "removing propagation redundant constraints in redundant modeling"
    - "a complete classification of tractability in rcc 5"

Connected through hyperedge HE-4 (induced by source paper "on a semi automatic method for generating composition tables"):
  with members:
    - "qualitative reasoning about relative direction on adjustable levels of granularity"

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)