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: "interpolation based gr 1 assumptions refinement"
  Abstract: This paper considers the problem of assumptions refinement in the context of unrealizable specifications for reactive systems. We propose a new counterstrategy-guided synthesis approach for GR(1) specifications based on Craig's interpolants. Our interpolation-based method identifies causes for unrealizability and computes assumptions that directly target unrealizable cores, without the need for user input. Thereby, we discuss how this property reduces the maximum number of steps needed to converge to realizability compared with other techniques. We describe properties of interpolants that yield helpful assumptions in GR(1) and prove the soundness of the results. Finally, we demonstrate that our approach yields weaker assumptions than baseline techniques.

Connected through hyperedge HE-1 (induced by source paper "minimal assumptions refinement for gr 1 specifications"):
  with members:
    - "a weakness measure for gr 1 formulae"
    - "using dynamic analysis to generate disjunctive invariants"
    - "counter strategy guided refinement of gr 1 temporal logic specifications"
    - "redundancy in logic i cnf propositional formulae"

Connected through hyperedge HE-2 (induced by source paper "a weakness measure for gr 1 formulae"):
  with members:
    - "counter strategy guided refinement of gr 1 temporal logic specifications"
    - "better quality in synthesis through quantitative objectives"
    - "environment assumptions for synthesis"

Connected through hyperedge HE-3 (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"

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)