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: "the dlvhex system for knowledge representation recent advances system description"
  Abstract: The DLVHEX system implements the HEX-semantics, which integrates answer set programming (ASP) with arbitrary external sources. Since its first release ten years ago, significant advancements were achieved. Most importantly, the exploitation of properties of external sources led to efficiency improvements and flexibility enhancements of the language, and technical improvements on the system side increased user's convenience. In this paper, we present the current status of the system and point out the most important recent enhancements over early versions. While existing literature focuses on theoretical aspects and specific components, a bird's eye view of the overall system is missing. In order to promote the system for real-world applications, we further present applications which were already successfully realized on top of DLVHEX. This paper is under consideration for acceptance in Theory and Practice of Logic Programming.

Connected through hyperedge HE-1 (induced by source paper "a logic based framework leveraging neural networks for studying the evolution of neurological disorders"):
  with members:
    - "the seventh answer set programming competition design and results"
    - "the external interface for extending wasp"
    - "asp core 2 input language format"
    - "a comprehensive survey on graph neural networks"
    - "interpreting cnns via decision trees"
    - "constraint answer set programming without grounding"
    - "automated verification of neural networks advances challenges and perspectives"
    - "visual interpretability for deep learning a survey"

Connected through hyperedge HE-2 (induced by source paper "stepwise debugging of answer set programs"):
  with members:
    - "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"
    - "justifications for logic programs under answer set semantics"
    - "the dlv system for knowledge representation and reasoning"
    - "extending classical logic with inductive definitions"

Connected through hyperedge HE-3 (induced by source paper "constraints lazy constraints or propagators in asp solving an empirical analysis"):
  with members:
    - "constraint answer set solver ezcsp and why integration schemas matter"
    - "the power of non ground rules in answer set programming"
    - "combining answer set programming and domain heuristics for solving hard industrial problems application paper"
    - "a model building framework for answer set programming with external computations"
    - "modeling variations of first order horn abduction in answer set programming"
    - "optimizing phylogenetic supertrees using answer set programming"
    - "generating explanations for biomedical queries"
    - "lazy model expansion interleaving grounding with search"

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.CL(Computation and Language)