human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "bifuzzy discrete event systems and their supervisory control theory"):
  Abstract: It is well known that type-1 fuzzy sets (T1 FSs) have limited capabilities to handle some data uncertainties directly, and type-2 fuzzy sets (T2 FSs) can cover the shortcoming of T1 FSs to a certain extent. Fuzzy discrete event systems (FDESs) were proposed based on T1 FSs theory. Hence, FDES may not be a satisfactory model to characterize some high-uncertainty systems. In this paper, we propose a new model, called as bifuzzy discrete event systems (BFDESs), by combining classical DESs theory and T2 FSs theory. Then, we consider the supervisory control problem of BFDESs. The bifuzzy controllability theorem and nonblocking bifuzzy controllability theorem are demonstrated. In addition, an algorithm for checking the bifuzzy controllability condition is presented. In addition, two controllable approximations to an uncontrollable language are investigated in detail. An illustrative example is provided to show the applicability and the advantages of the BFDES model.

Includes members:
  Member "fuzzy discrete event systems under fuzzy observability and a test algorithm":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "supervisory control of fuzzy discrete event systems for simulation equivalence")
  Member "supervisory control of fuzzy discrete event systems a formal approach":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "supervisory control of fuzzy discrete event systems for simulation equivalence")
  Member "supervisory control of fuzzy discrete event systems":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "supervisory control of fuzzy discrete event systems for simulation equivalence")
  Member "observability and decentralized control of fuzzy discrete event systems":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "supervisory control of fuzzy discrete event systems for simulation equivalence")

Question: Please tell me which class the source paper 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.SY(Systems and Control)