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: "unfolding partiality and disjunctions in stable model semantics"
  Abstract: The paper studies an implementation methodology for partial and disjunctive stable models where partiality and disjunctions are unfolded from a logic program so that an implementation of stable models for normal (disjunction-free) programs can be used as the core inference engine. The unfolding is done in two separate steps. Firstly, it is shown that partial stable models can be captured by total stable models using a simple linear and modular program transformation. Hence, reasoning tasks concerning partial stable models can be solved using an implementation of total stable models. Disjunctive partial stable models have been lacking implementations which now become available as the translation handles also the disjunctive case. Secondly, it is shown how total stable models of disjunctive programs can be determined by computing stable models for normal programs. Hence, an implementation of stable models of normal programs can be used as a core engine for implementing disjunctive programs. The feasibility of the approach is demonstrated by constructing a system for computing stable models of disjunctive programs using the smodels system as the core engine. The performance of the resulting system is compared to that of dlv which is a state-of-the-art special purpose system for disjunctive programs.

Connected through hyperedge HE-1 (induced by source paper "towards generating explanations for asp based link analysis using declarative program transformations"):
  with members:
    - "answering the why in answer set programming a survey of explanation approaches"
    - "efficiency analysis of asp encodings for sequential pattern mining tasks"
    - "clingo asp control preliminary report"

Connected through hyperedge HE-2 (induced by source paper "optimizing answer set computation via heuristic based decomposition"):
  with members:
    - "the power of non ground rules in answer set programming"
    - "lpopt a rule optimization tool for answer set programming"
    - "asperix a first order forward chaining approach for answer set computing"
    - "clingo asp control preliminary report"
    - "parallel instantiation of asp programs techniques and experiments"
    - "the dlv system for knowledge representation and reasoning"

Connected through hyperedge HE-3 (induced by source paper "stable unstable semantics beyond np with normal logic programs"):
  with members:
    - "optimizing phylogenetic supertrees using answer set programming"
    - "predicate logic as a modeling language modeling and solving some machine learning and data mining problems with idp3"
    - "simulating dynamic systems using linear time calculus theories"
    - "complex optimization in answer set programming"
    - "the dlv system for knowledge representation and reasoning"
    - "towards automated integration of guess and check programs in answer set programming a meta interpreter and applications"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-4 (induced by source paper "the power of non ground rules in answer set programming"):
  with members:
    - "asperix a first order forward chaining approach for answer set computing"
    - "rewriting ontological queries into small nonrecursive datalog programs"
    - "complex optimization in answer set programming"
    - "towards automated integration of guess and check programs in answer set programming a meta interpreter and applications"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-5 (induced by source paper "disjunctive answer set solvers via templates"):
  with members:
    - "team building with answer set programming in the gioia tauro seaport"
    - "transition systems for model generators a unifying approach"
    - "the dlv system for knowledge representation and reasoning"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-6 (induced by source paper "dual normal logic programs the forgotten class"):
  with members:
    - "backdoors to normality for disjunctive logic programs"
    - "team building with answer set programming in the gioia tauro seaport"
    - "trichotomy and dichotomy results on the complexity of reasoning with disjunctive logic programs"
    - "characterising equilibrium logic and nested logic programs reductions and complexity1 2"
    - "semantical characterizations and complexity of equivalences in answer set programming"

Connected through hyperedge HE-7 (induced by source paper "the design of the fifth answer set programming competition"):
  with members:
    - "preliminary report on wasp 2 0"
    - "translating answer set programs into bit vector logic"
    - "design and implementation of aggregate functions in the dlv system"
    - "the dlv system for knowledge representation and reasoning"
    - "tight logic programs"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-8 (induced by source paper "complexity of super coherence problems in asp"):
  with members:
    - "team building with answer set programming in the gioia tauro seaport"
    - "dynamic magic sets for super consistent answer set programs"
    - "a system of interaction and structure"
    - "the dlv system for knowledge representation and reasoning"
    - "semantical characterizations and complexity of equivalences in 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)