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: "causal graph justifications of logic programs"
  Abstract: In this work we propose a multi-valued extension of logic programs under the stable models semantics where each true atom in a model is associated with a set of justifications. These justifications are expressed in terms of causal graphs formed by rule labels and edges that represent their application ordering. For positive programs, we show that the causal justifications obtained for a given atom have a direct correspon- dence to (relevant) syntactic proofs of that atom using the program rules involved in the graphs. The most interesting contribution is that this causal information is obtained in a purely semantic way, by algebraic op- erations (product, sum and application) on a lattice of causal values whose ordering relation expresses when a justification is stronger than another. Finally, for programs with negation, we define the concept of causal stable model by introducing an analogous transformation to Gelfond and Lifschitz's program reduct. As a result, default negation behaves as "absence of proof" and no justification is derived from negative liter

Connected through hyperedge HE-1 (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"
    - "functional answer set programming"
    - "justifications for logic programs under answer set semantics"

Connected through hyperedge HE-2 (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-3 (induced by source paper "enablers and inhibitors in causal justifications of logic programs"):
  with members:
    - "justifying answer sets using argumentation"
    - "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"
    - "justifications for logic programs under answer set semantics"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-4 (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"
    - "actual causation in cp logic"
    - "catching the ouroboros on debugging non ground answer set programs"
    - "justifications for logic programs under answer set semantics"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-5 (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"
    - "actual causation in cp logic"
    - "defaults and normality in causal structures"
    - "justifications for logic programs under answer set semantics"

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)