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: "justifications for logic programs under answer set semantics"
  Abstract: The paper introduces the notion of off-line justification for Answer Set Programming (ASP). Justifications provide a graph-based explanation of the truth value of an atom w.r.t. a given answer set. The paper extends also this notion to provide justification of atoms during the computation of an answer set (on-line justification), and presents an integration of on-line justifications within the computation model of Smodels. Off-line and on-line justifications provide useful tools to enhance understanding of ASP, and they offer a basic data structure to support methodologies and tools for debugging answer set programs. A preliminary implementation has been developed in ASP-PROLOG. #R##N#(To appear in Theory and Practice of Logic Programming (TPLP))

Connected through hyperedge HE-1 (induced by source paper "debugging non ground asp programs technique and graphical tools"):
  with members:
    - "combining answer set programming and domain heuristics for solving hard industrial problems application paper"
    - "anytime answer set optimization via unsatisfiable core shrinking"
    - "justifying answer sets using argumentation"
    - "optimizing phylogenetic supertrees using answer set programming"
    - "generating explanations for biomedical queries"
    - "a web based ide for idp"
    - "the third open answer set programming competition"
    - "unit testing in aspide"

Connected through hyperedge HE-2 (induced by source paper "a rule based system for explainable donor patient matching in liver transplantation"):
  with members:
    - "answering the why in answer set programming a survey of explanation approaches"
    - "deriving conclusions from non monotonic cause effect relations"
    - "causal graph justifications of logic programs"
    - "functional answer set programming"

Connected through hyperedge HE-3 (induced by source paper "answering the why in answer set programming a survey of explanation approaches"):
  with members:
    - "achievements in answer set programming"
    - "enablers and inhibitors in causal justifications of logic programs"
    - "stepwise debugging of answer set programs"
    - "justifications for programs with disjunctive and causal choice rules"
    - "deriving conclusions from non monotonic cause effect relations"
    - "an integrated graphical user interface for debugging answer set programs"
    - "justifying answer sets using argumentation"
    - "asperix a first order forward chaining approach for answer set computing"

Connected through hyperedge HE-4 (induced by source paper "stepwise debugging of answer set programs"):
  with members:
    - "the dlvhex system for knowledge representation recent advances system description"
    - "kara a system for visualising and visual editing of interpretations for answer set programs"
    - "the sealion has landed an ide for answer set programming preliminary report"
    - "catching the ouroboros on debugging non ground answer set programs"
    - "on elementary loops of logic programs"
    - "logic programs with propositional connectives and aggregates"
    - "the dlv system for knowledge representation and reasoning"
    - "extending classical logic with inductive definitions"

Connected through hyperedge HE-5 (induced by source paper "enablers and inhibitors in causal justifications of logic programs"):
  with members:
    - "justifying answer sets using argumentation"
    - "causal graph justifications of logic programs"
    - "actual causation in cp logic"
    - "catching the ouroboros on debugging non ground answer set programs"
    - "actual causation and the art of modeling"
    - "defaults and normality in causal structures"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-6 (induced by source paper "justifications for programs with disjunctive and causal choice rules"):
  with members:
    - "enablers and inhibitors in causal justifications of logic programs"
    - "deriving conclusions from non monotonic cause effect relations"
    - "justifying answer sets using argumentation"
    - "causal graph justifications of logic programs"
    - "actual causation in cp logic"
    - "catching the ouroboros on debugging non ground answer set programs"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-7 (induced by source paper "deriving conclusions from non monotonic cause effect relations"):
  with members:
    - "enablers and inhibitors in causal justifications of logic programs"
    - "justifications for programs with disjunctive and causal choice rules"
    - "justifying answer sets using argumentation"
    - "causal graph justifications of logic programs"
    - "actual causation in cp logic"
    - "defaults and normality in causal structures"

Connected through hyperedge HE-8 (induced by source paper "justifying answer sets using argumentation"):
  with members:
    - "generating explanations for biomedical queries"
    - "automatic music composition using answer set programming"
    - "defeasible logic programming an argumentative approach"
    - "smodels a system for answer set programming"

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)