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 second reactive synthesis competition syntcomp 2015"
  Abstract: We report on the design and results of the second reactive synthesis competition (SYNTCOMP 2015). We describe our extended benchmark library, with 6 completely new sets of benchmarks, and additional challenging instances for 4 of the benchmark sets that were already used in SYNTCOMP 2014. To enhance the analysis of experimental results, we introduce an extension of our benchmark format with meta-information, including a difficulty rating and a reference size for solutions. Tools are evaluated on a set of 250 benchmarks, selected to provide a good coverage of benchmarks from all classes and difficulties. We report on changes of the evaluation scheme and the experimental setup. Finally, we describe the entrants into SYNTCOMP 2015, as well as the results of our experimental evaluation. In our analysis, we emphasize progress over the tools that participated last year.

Connected through hyperedge HE-1 (induced by source paper "strategy representation by decision trees with linear classifiers"):
  with members:
    - "strategy representation by decision trees in reactive synthesis"
    - "a storm is coming a modern probabilistic model checker"
    - "an automaton learning approach to solving safety games over infinite graphs"
    - "counterexample explanation by learning small strategies in markov decision processes"
    - "extended aiger format for synthesis"
    - "measuring and synthesizing systems in probabilistic environments"

Connected through hyperedge HE-2 (induced by source paper "functional synthesis via input output separation"):
  with members:
    - "sequential relational decomposition"
    - "what s hard about boolean functional synthesis"
    - "symbolic ltlf synthesis"
    - "towards parallel boolean functional synthesis"
    - "skolem functions for factored formulas"

Connected through hyperedge HE-3 (induced by source paper "what s hard about boolean functional synthesis"):
  with members:
    - "symbolic ltlf synthesis"
    - "towards parallel boolean functional synthesis"
    - "skolem functions for factored formulas"
    - "abssynthe abstract synthesis from succinct safety specifications"

Connected through hyperedge HE-4 (induced by source paper "strategy representation by decision trees in reactive synthesis"):
  with members:
    - "an automaton learning approach to solving safety games over infinite graphs"
    - "counterexample explanation by learning small strategies in markov decision processes"
    - "learning invariants using decision trees"
    - "extended aiger format for synthesis"

Connected through hyperedge HE-5 (induced by source paper "the 4th reactive synthesis competition syntcomp 2017 benchmarks participants results"):
  with members:
    - "bosy an experimentation framework for bounded synthesis"
    - "encodings of bounded synthesis"
    - "solving qbf by abstraction"
    - "the first reactive synthesis competition syntcomp 2014"
    - "the reactive synthesis competition syntcomp 2016 and beyond"
    - "bounded cycle synthesis"
    - "the 3rd reactive synthesis competition syntcomp 2016 benchmarks participants results"
    - "a high level ltl synthesis format tlsf v1 1"

Connected through hyperedge HE-6 (induced by source paper "performance heuristics for gr 1 synthesis and related algorithms"):
  with members:
    - "spectra a specification language for reactive systems"
    - "the 4th reactive synthesis competition syntcomp 2017 benchmarks participants results"
    - "the first reactive synthesis competition syntcomp 2014"
    - "electronic proceedings in theoretical computer science eptcs preface"
    - "symbolic bdd and add algorithms for energy games"
    - "proceedings fifth workshop on synthesis"
    - "the 3rd reactive synthesis competition syntcomp 2016 benchmarks participants results"
    - "synthesizing a lego forklift controller in gr 1 a case study"

Connected through hyperedge HE-7 (induced by source paper "the first reactive synthesis competition syntcomp 2014"):
  with members:
    - "a high level ltl synthesis format tlsf v1 0"
    - "sat based methods for circuit synthesis"
    - "extended aiger format for synthesis"
    - "abssynthe abstract synthesis from succinct safety specifications"
    - "experimental aspects of synthesis"

Connected through hyperedge HE-8 (induced by source paper "the reactive synthesis competition syntcomp 2016 and beyond"):
  with members:
    - "solving qbf by abstraction"
    - "the first reactive synthesis competition syntcomp 2014"
    - "satisfiability based methods for reactive synthesis from safety specifications"
    - "the 3rd reactive synthesis competition syntcomp 2016 benchmarks participants results"
    - "a high level ltl synthesis format tlsf v1 1"
    - "specification format for reactive synthesis problems"
    - "compositional algorithms for succinct safety games"
    - "assume guarantee synthesis for concurrent reactive programs with partial information"

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)