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: "rewriting recursive aggregates in answer set programming back to monotonicity"
  Abstract: Aggregation functions are widely used in answer set programming for representing and reasoning on knowledge involving sets of objects collectively. Current implementations simplify the structure of programs in order to optimize the overall performance. In particular, aggregates are rewritten into simpler forms known as monotone aggregates. Since the evaluation of normal programs with monotone aggregates is in general on a lower complexity level than the evaluation of normal programs with arbitrary aggregates, any faithful translation function must introduce disjunction in rule heads in some cases. However, no function of this kind is known. The paper closes this gap by introducing a polynomial, faithful, and modular translation for rewriting common aggregation functions into the simpler form accepted by current solvers. A prototype system allows for experimenting with arbitrary recursive aggregates, which are  also supported in the recent version 4.5  of the grounder gringo, using the methods presented in this paper.

Connected through hyperedge HE-1 (induced by source paper "an asp semantics for constraints involving conditional aggregates"):
  with members:
    - "asp core 2 input language format"
    - "hybrid metabolic network completion"
    - "vicious circle principle and logic programs with aggregates"
    - "functional answer set programming"
    - "logic programs with propositional connectives and aggregates"
    - "well founded and stable semantics of logic programs with aggregates"

Connected through hyperedge HE-2 (induced by source paper "enhancing magic sets with an application to ontological reasoning"):
  with members:
    - "shared aggregate sets in answer set programming"
    - "cautious reasoning in asp via minimal models and unsatisfiable cores"
    - "anytime answer set optimization via unsatisfiable core shrinking"
    - "anytime computation of cautious consequences in answer set programming"
    - "vicious circle principle and logic programs with aggregates"
    - "complexity of super coherence problems in asp"
    - "logic programs with propositional connectives and aggregates"
    - "well founded and stable semantics of logic programs with aggregates"

Connected through hyperedge HE-3 (induced by source paper "asp core 2 input language format"):
  with members:
    - "relating two dialects of answer set programming"
    - "routing driverless transport vehicles in car assembly with answer set programming"
    - "abstract gringo"
    - "vicious circle principle and logic programs with aggregates"
    - "the third open answer set programming competition"
    - "unfounded sets and well founded semantics of answer set programs with aggregates"
    - "well founded and stable semantics of logic programs with aggregates"

Connected through hyperedge HE-4 (induced by source paper "inlining external sources in answer set programs"):
  with members:
    - "a model building framework for answer set programming with external computations"
    - "conflict driven asp solving with external sources"
    - "asp modulo csp the clingcon system"
    - "a common view on strong uniform and other notions of equivalence in answer set programming"
    - "a knowledge compilation map"

Connected through hyperedge HE-5 (induced by source paper "shared aggregate sets in answer set programming"):
  with members:
    - "asp core 2 input language format"
    - "constraints lazy constraints or propagators in asp solving an empirical analysis"
    - "clingcon the next generation"
    - "combining answer set programming and domain heuristics for solving hard industrial problems application paper"
    - "anytime answer set optimization via unsatisfiable core shrinking"
    - "predicate logic as a modeling language modeling and solving some machine learning and data mining problems with idp3"
    - "complexity and compilation of gz aggregates in answer set programming"
    - "vicious circle principle and logic programs with aggregates"

Connected through hyperedge HE-6 (induced by source paper "multi shot asp solving with clingo"):
  with members:
    - "plasp 3 towards effective asp planning"
    - "clingcon the next generation"
    - "a framework for easing the development of applications embedding answer set programming"
    - "driving cdcl search"
    - "complexity and compilation of gz aggregates in answer set programming"
    - "predicate logic as a modelling language the idp system"
    - "clingo asp control preliminary report"
    - "a system for interactive query answering with answer set programming"

Connected through hyperedge HE-7 (induced by source paper "model enumeration in propositional circumscription via unsatisfiable core analysis"):
  with members:
    - "multi shot asp solving with clingo"
    - "anytime answer set optimization via unsatisfiable core shrinking"
    - "complexity and compilation of gz aggregates in answer set programming"
    - "the dlv system for knowledge representation and reasoning"

Connected through hyperedge HE-8 (induced by source paper "anytime answer set optimization via unsatisfiable core shrinking"):
  with members:
    - "complexity and compilation of gz aggregates in answer set programming"
    - "anytime computation of cautious consequences in answer set programming"
    - "vicious circle principle and logic programs with aggregates"
    - "complex optimization in answer set programming"
    - "on solving boolean multilevel optimization problems"
    - "algorithms for weighted boolean optimization"
    - "logic programs with propositional connectives and aggregates"

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)