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: "supervisory control of fuzzy discrete event systems"
  Abstract: In order to cope with situations in which a plant's dynamics are not precisely known, we consider the problem of supervisory control for a class of discrete event systems modelled by fuzzy automata. The behavior of such discrete event systems is described by fuzzy languages; the supervisors are event feedback and can disable only controllable events with any degree. The concept of discrete event system controllability is thus extended by incorporating fuzziness. In this new sense, we present a necessary and sufficient condition for a fuzzy language to be controllable. We also study the supremal controllable fuzzy sublanguage and the infimal controllable fuzzy superlanguage when a given pre-specified desired fuzzy language is uncontrollable. Our framework generalizes that of Ramadge-Wonham and reduces to Ramadge-Wonham framework when membership grades in all fuzzy languages must be either 0 or 1. The theoretical development is accompanied by illustrative numerical examples.

Connected through hyperedge HE-1 (induced by source paper "supervisory control of fuzzy discrete event systems for simulation equivalence"):
  with members:
    - "computation of the greatest simulations and bisimulations between fuzzy automata"
    - "model checking of linear time properties based on possibility measure"
    - "bisimulations for fuzzy transition systems"
    - "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"
    - "observability and decentralized control of fuzzy discrete event systems"

Connected through hyperedge HE-2 (induced by source paper "bifuzzy discrete event systems and their supervisory control theory"):
  with members:
    - "fuzzy discrete event systems under fuzzy observability and a test algorithm"
    - "supervisory control of fuzzy discrete event systems a formal approach"
    - "observability and decentralized control of fuzzy discrete event systems"

Connected through hyperedge HE-3 (induced by source paper "further improvements of determinization methods for fuzzy finite automata"):
  with members:
    - "supervisory control of fuzzy discrete event systems for simulation equivalence"
    - "brzozowski type determinization for fuzzy automata"
    - "determinization of fuzzy automata by means of the degrees of language inclusion"
    - "a possibilistic model for qualitative sequential decision problems under uncertainty in partially observable environments"
    - "pomdps under probabilistic semantics"
    - "qualitative possibilistic mixed observable mdps"
    - "decidability of minimization of fuzzy automata"
    - "computation of the greatest simulations and bisimulations between fuzzy automata"

Connected through hyperedge HE-4 (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"
    - "generalizing the paige tarjan algorithm by abstract interpretation"
    - "fuzzy discrete event systems under fuzzy observability and a test algorithm"

Connected through hyperedge HE-5 (induced by source paper "reduction of fuzzy automata by means of fuzzy quasi orders"):
  with members:
    - "state based control of fuzzy discrete event systems"
    - "generalizing the paige tarjan algorithm by abstract interpretation"
    - "fuzzy discrete event systems under fuzzy observability and a test algorithm"
    - "supervisory control of fuzzy discrete event systems a formal approach"
    - "observability and decentralized control of fuzzy discrete event systems"

Connected through hyperedge HE-6 (induced by source paper "bisimulations for fuzzy transition systems"):
  with members:
    - "a fuzzy petri nets model for computing with words"
    - "supervisory control of fuzzy discrete event systems a formal approach"

Connected through hyperedge HE-7 (induced by source paper "nondeterministic fuzzy automata"):
  with members:
    - "bisimulations for fuzzy transition systems"
    - "supervisory control of fuzzy discrete event systems a formal approach"

Connected through hyperedge HE-8 (induced by source paper "a fuzzy petri nets model for computing with words"):
  with members:
    - "probabilistic automata for computing with words"
    - "supervisory control of fuzzy discrete event systems a formal approach"
    - "observability and decentralized control of fuzzy discrete event systems"

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.DM(Discrete Mathematics)