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: "answer set planning under action costs"
  Abstract: Recently, planning based on answer set programming has been proposed as an approach towards realizing declarative planning systems. In this paper, we present the language κc, which extends the declarative planning language κ by action costs. κc provides the notion of admissible and optimal plans, which are plans whose overall action costs are within a given limit resp. minimum over all plans (i.e., cheapest plans). As we demonstrate, this novel language allows for expressing some nontrivial planning tasks in a declarative way. Furthermore, it can be utilized for representing planning problems under other optimality criteria, such as computing "shortest" plans (with the least number of steps), and refinement combinations of cheapest and fastest plans. We study complexity aspects of the language κc and provide a transformation to logic programs, such that planning problems are solved via answer set programming. Furthermore, we report experimental results on selected problems. Our experience is encouraging that answer set planning may be a valuable approach to expressive planning systems in which intricate planning problems can be naturally specified and solved.

Connected through hyperedge HE-1 (induced by source paper "domain independent cost optimal planning in asp"):
  with members:
    - "plasp 3 towards effective asp planning"
    - "asp core 2 input language format"

Connected through hyperedge HE-2 (induced by source paper "the dlv system for knowledge representation and reasoning"):
  with members:
    - "unfolding partiality and disjunctions in stable model semantics"
    - "a logic programming approach to knowledge state planning ii the dlv k system"
    - "computing preferred answer sets by meta interpretation in answer set programming"
    - "a polynomial translation of logic programs with nested expressions into disjunctive logic programs preliminary report"
    - "disjunctive logic programs with inheritance"
    - "on properties of update sequences based on causal rejection"
    - "propositional satisfiability in answer set programming"
    - "dlv a system for declarative problem solving"

Connected through hyperedge HE-3 (induced by source paper "planning with preferences using logic programming"):
  with members:
    - "the dlv system for knowledge representation and reasoning"
    - "domain dependent knowledge in answer set planning"
    - "a framework for compiling preferences in logic programs"
    - "conformant planning via symbolic model checking"

Connected through hyperedge HE-4 (induced by source paper "computing preferred answer sets by meta interpretation in answer set programming"):
  with members:
    - "on the expressibility of stable logic programming"
    - "logic programs with compiled preferences"
    - "smodels a system for answer set programming"
    - "well founded semantics for extended logic programs with dynamic preferences"

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)