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: "generalizing the paige tarjan algorithm by abstract interpretation"
  Abstract: The Paige and Tarjan algorithm (PT) for computing the coarsest refinement of a state partition which is a bisimulation on some Kripke structure is well known. It is also well known in model checking that bisimulation is equivalent to strong preservation of CTL, or, equivalently, of Hennessy-Milner logic. Drawing on these observations, we analyze the basic steps of the PT algorithm from an abstract interpretation perspective, which allows us to reason on strong preservation in the context of generic inductively defined (temporal) languages and of possibly non-partitioning abstract models specified by abstract interpretation. This leads us to design a generalized Paige-Tarjan algorithm, called GPT, for computing the minimal refinement of an abstract interpretation-based model that strongly preserves some given language. It turns out that PT is a straight instance of GPT on the domain of state partitions for the case of strong preservation of Hennessy-Milner logic. We provide a number of examples showing that GPT is of general use. We first show how a well-known efficient algorithm for computing stuttering equivalence can be viewed as a simple instance of GPT. We then instantiate GPT in order to design a new efficient algorithm for computing simulation equivalence that is competitive with the best available algorithms. Finally, we show how GPT allows to compute new strongly preserving abstract models by providing an efficient algorithm that computes the coarsest refinement of a given partition that strongly preserves the language generated by the reachability operator.

Connected through hyperedge HE-1 (induced by source paper "correct and efficient antichain algorithms for refinement checking"):
  with members:
    - "a branching time model of csp"
    - "branching bisimilarity with explicit divergence"

Connected through hyperedge HE-2 (induced by source paper "generic partition refinement and weighted tree automata"):
  with members:
    - "efficient and modular coalgebraic partition refinement"
    - "efficient coalgebraic partition refinement"
    - "tight lower and upper bounds for the complexity of canonical colour refinement"
    - "automata theory in nominal sets"

Connected through hyperedge HE-3 (induced by source paper "efficient and modular coalgebraic partition refinement"):
  with members:
    - "generic partition refinement and weighted tree automata"
    - "a new foundation for finitary corecursion and iterative algebras"
    - "efficient coalgebraic partition refinement"
    - "tight lower and upper bounds for the complexity of canonical colour refinement"

Connected through hyperedge HE-4 (induced by source paper "an o m log n algorithm for stuttering equivalence and branching bisimulation"):
  with members:
    - "distributed branching bisimulation minimization by inductive signatures"

Connected through hyperedge HE-5 (induced by source paper "computation of the greatest simulations and bisimulations between fuzzy automata"):
  with members:
    - "construction of fuzzy automata from fuzzy regular expressions"
    - "bisimulations for fuzzy transition systems"
    - "bisimulations for fuzzy automata"
    - "reduction of fuzzy automata by means of fuzzy quasi orders"
    - "simulation vs equivalence"
    - "state based control of fuzzy discrete event systems"
    - "fuzzy discrete event systems under fuzzy observability and a test algorithm"
    - "supervisory control of fuzzy discrete event systems a formal approach"

Connected through hyperedge HE-6 (induced by source paper "reduction of fuzzy automata by means of fuzzy quasi orders"):
  with members:
    - "state based control of fuzzy discrete event systems"
    - "fuzzy discrete event systems under fuzzy observability and a test algorithm"
    - "supervisory control of fuzzy discrete event systems a formal approach"
    - "supervisory control of fuzzy discrete event systems"
    - "observability and decentralized control of fuzzy discrete event systems"

Connected through hyperedge HE-7 (induced by source paper "bisimulations for fuzzy automata"):
  with members:
    - "reduction of fuzzy automata by means of fuzzy quasi orders"
    - "simulation vs equivalence"
    - "fuzzy discrete event systems under fuzzy observability and a test algorithm"
    - "supervisory control of fuzzy discrete event systems a formal approach"

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)