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: "sat based methods for circuit synthesis"
  Abstract: Reactive synthesis supports designers by automatically constructing correct hardware from declarative specifications. Synthesis algorithms usually compute a strategy, and then construct a circuit that implements it. In this work, we study SAT- and QBF-based methods for the second step, i.e., computing circuits from strategies. This includes methods based on QBF-certification, interpolation, and computational learning. We present optimizations, efficient implementations, and experimental results for synthesis from safety specifications, where we outperform BDDs both regarding execution time and circuit size. This is an extended version of [2], with an additional appendix.

Connected through hyperedge HE-1 (induced by source paper "learning abstractions for program synthesis"):
  with members:
    - "program synthesis using abstraction refinement"
    - "synthesizing imperative programs from examples guided by static analysis"
    - "automated migration of hierarchical data to relational tables using programming by example"
    - "synthesis of data completion scripts using finite tree automata"
    - "component based synthesis of table consolidation and transformation tasks from examples"
    - "program synthesis from polymorphic refinement types"
    - "interpolant based transition relation approximation"

Connected through hyperedge HE-2 (induced by source paper "the first reactive synthesis competition syntcomp 2014"):
  with members:
    - "a high level ltl synthesis format tlsf v1 0"
    - "the second reactive synthesis competition syntcomp 2015"
    - "extended aiger format for synthesis"
    - "abssynthe abstract synthesis from succinct safety specifications"
    - "experimental aspects of synthesis"

Connected through hyperedge HE-3 (induced by source paper "developing a practical reactive synthesis tool experience and lessons learned"):
  with members:
    - "extended aiger format for synthesis"
    - "regression free synthesis for concurrency"
    - "on integrating deductive synthesis and verification systems"
    - "strategy synthesis for multi dimensional quantitative objectives"
    - "algorithms for omega regular games with imperfect information"

Connected through hyperedge HE-4 (induced by source paper "the second reactive synthesis competition syntcomp 2015"):
  with members:
    - "the first reactive synthesis competition syntcomp 2014"
    - "specification format for reactive synthesis problems"
    - "compositional algorithms for succinct safety games"
    - "incremental qbf solving"
    - "abssynthe abstract synthesis from succinct safety specifications"

Connected through hyperedge HE-5 (induced by source paper "synchronous counting and computational algorithm design"):
  with members:
    - "twenty five comparators is optimal when sorting nine inputs and twenty nine for ten"
    - "large cuts with local algorithms on triangle free graphs"
    - "optimal sorting networks"
    - "self stabilizing pulse synchronization inspired by biological pacemaker networks"

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)