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: "developing the uml as a formal modelling notation"
  Abstract: The Unified Modeling Language (UML) is rapidly emerging as a de-facto standard for modelling OO systems. Given this role, it is imperative that the UML have a well- defined, fully explored semantics. Such semantics is required in order to ensure that UML concepts are precisely stated and defined. In this paper we describe and motivate an approach to formalizing UML in which formal specification techniques are used to gain insight into the semantics of UML notations and diagrams. We present work carried out by the Precise UML (PUML) group on the development of a precise semantic model for UML class diagrams. The semantic model is used as the basis for a set of diagrammatical transformation rules, which enable formal deductions to be made about UML class diagrams. It is also shown how these rules can be used to verify whether one class diagram is a valid refinement (design) of another. Because these rules are presented at the diagrammatical level, it will be argued that UML can be successfully used as a formal modelling tool without the notational complexities that are commonly found in formal specification techniques.

Connected through hyperedge HE-1 (induced by source paper "cd2alloy class diagrams analysis using alloy revisited"):
  with members:
    - "semantically configurable consistency analysis for class and object diagrams"
    - "system model semantics of class diagrams"
    - "monticore a framework for compositional development of domain specific languages"
    - "cddiff semantic differencing for class diagrams"
    - "the uml as a formal modeling notation"
    - "system model based definition of modeling language semantics"

Connected through hyperedge HE-2 (induced by source paper "semantically configurable consistency analysis for class and object diagrams"):
  with members:
    - "system model semantics of class diagrams"
    - "monticore a framework for compositional development of domain specific languages"
    - "cd2alloy class diagrams analysis using alloy revisited"
    - "the uml as a formal modeling notation"
    - "variability within modeling language definitions"

Connected through hyperedge HE-3 (induced by source paper "cddiff semantic differencing for class diagrams"):
  with members:
    - "system model semantics of class diagrams"
    - "monticore a framework for compositional development of domain specific languages"
    - "modal object diagrams"
    - "a manifesto for semantic model differencing"
    - "the uml as a formal modeling notation"

Connected through hyperedge HE-4 (induced by source paper "modal object diagrams"):
  with members:
    - "system model semantics of class diagrams"
    - "monticore a framework for compositional development of domain specific languages"
    - "cddiff semantic differencing for class diagrams"
    - "the uml as a formal modeling notation"

Connected through hyperedge HE-5 (induced by source paper "a manifesto for semantic model differencing"):
  with members:
    - "system model semantics of class diagrams"
    - "monticore a framework for compositional development of domain specific languages"
    - "the uml as a formal modeling notation"

Connected through hyperedge HE-6 (induced by source paper "using alloy to model check visual design notations"):
  with members:
    - "second ecoop workshop on precise behavioral semantics with an emphasis on oo business specifications"

Connected through hyperedge HE-7 (induced by source paper "meta modelling semantics of uml"):
  with members:
    - "towards a formalization of the unified modeling language"

Connected through hyperedge HE-8 (induced by source paper "defining uml family members using prefaces"):
  with members:
    - "towards a formalization of the unified modeling language"

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.SE(Software Engineering)