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: "the uml as a formal modeling 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 needs 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 motivate an approach to formalizing UML in which formal specification techniques are used to gain insight into the semantics of UML notations and diagrams and describe a roadmap for this approach. The authors initiated the Precise UML (PUML) group in order to develop a precise semantic model for UML diagrams. The semantic model is to be used as the basis for a set of diagrammatical transformation rules, which enable formal deductions to be made about UML diagrams. A small example shows how these rules can be used to verify whether one class diagram is a valid deduction 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 textual 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"
    - "developing the uml as a formal modelling 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"
    - "developing the uml as a formal modelling 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"
    - "developing the uml as a formal modelling 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"
    - "developing the uml as a formal modelling notation"

Connected through hyperedge HE-5 (induced by source paper "summarizing semantic model differences"):
  with members:
    - "an operational semantics for activity diagrams using smv"
    - "cddiff semantic differencing for class diagrams"
    - "a manifesto for semantic model differencing"
    - "addiff semantic differencing for activity diagrams"

Connected through hyperedge HE-6 (induced by source paper "a note on semantics with an emphasis on uml"):
  with members:
    - "towards a formalization of the unified modeling language"
    - "a stream based mathematical model for distributed information processing systems the syslab system model"
    - "automata describing object behavior"

Connected through hyperedge HE-7 (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"
    - "developing the uml as a formal modelling notation"

Connected through hyperedge HE-8 (induced by source paper "an algebraic view on the semantics of model composition"):
  with members:
    - "towards a system model for uml the structural data model"
    - "a note on semantics with an emphasis on uml"

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)