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: "a translational approach to constraint answer set solving"
  Abstract: We present a new approach to enhancing Answer Set Programming (ASP) with Constraint Processing techniques which allows for solving interesting Constraint Satisfaction Problems in ASP. We show how constraints on finite domains can be decomposed into logic programs such that unit-propagation achieves arc, bound or range consistency. Experiments with our encodings demonstrate their computational impact.

Connected through hyperedge HE-1 (induced by source paper "sat vs csp a commentary"):
  with members:
    - "translation based constraint answer set solving"
    - "decomposition of the nvalue constraint"
    - "circuit complexity and decompositions of global constraints"
    - "decompositions of all different global cardinality and related constraints"

Connected through hyperedge HE-2 (induced by source paper "clingcon the next generation"):
  with members:
    - "pddl planning via constraint answer set programming"
    - "predicate logic as a modelling language the idp system"
    - "clingo asp control preliminary report"
    - "boolean equi propagation for concise and efficient sat encodings of combinatorial problems"
    - "aspartame solving constraint satisfaction problems with answer set programming"
    - "conflict driven asp solving with external sources"
    - "asp modulo csp the clingcon system"
    - "introduction to the 28th international conference on logic programming special issue"

Connected through hyperedge HE-3 (induced by source paper "constraint answer set solver ezcsp and why integration schemas matter"):
  with members:
    - "the language features and architecture of b prolog"
    - "sicstus prolog the first 25 years"
    - "efficient constraint propagation engines"
    - "weight constraints as nested expressions"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-4 (induced by source paper "clingo goes linear constraints over reals and integers"):
  with members:
    - "clingo asp control preliminary report"
    - "aspartame solving constraint satisfaction problems with answer set programming"

Connected through hyperedge HE-5 (induced by source paper "logic programming approaches for routing fault free and maximally parallel wavelength routed optical networks on chip application paper"):
  with members:
    - "eclipse from lp to clp"
    - "the dlv system for knowledge representation and reasoning"

Connected through hyperedge HE-6 (induced by source paper "bound founded answer set programming"):
  with members:
    - "grounding bound founded answer set programs"

Connected through hyperedge HE-7 (induced by source paper "aspartame solving constraint satisfaction problems with answer set programming"):
  with members:
    - "boolean equi propagation for concise and efficient sat encodings of combinatorial problems"
    - "asp modulo csp the clingcon system"

Connected through hyperedge HE-8 (induced by source paper "asp modulo csp the clingcon system"):
  with members:
    - "complex optimization 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.LO(Logic in Computer Science)