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: "system model semantics of class diagrams"
  Abstract: Defining semantics for UML is a difficult task. Disagreements in the meaning of UML constructs as well as the size of UML are major obstacles. In this report, we describe our approach to define the semantics for UML. Semantics is defined denotationally as a mapping into our semantics domain called the system model [4, 5, 6]. We demonstrate our approach by defining the semantics for a comprehensive version of class diagrams. The semantics definition is detailed for UML/P class diagrams, a variant of class diagrams which restricts the use of a few methodologically and semantically involved concepts. Class diagrams are well-known and rather easy to understand and thus perfect to examine the usability of the system model for precise semantic mappings.

Connected through hyperedge HE-1 (induced by source paper "architecture and behavior modeling of cyber physical systems with montiarcautomaton"):
  with members:
    - "concurrent timed port automata"
    - "towards a semantics of activity diagrams with semantic variation points"
    - "systems views and models of uml"
    - "modal object diagrams"
    - "cd2alloy class diagrams analysis using alloy revisited"
    - "montiarcautomaton modeling architecture and behavior of robotic systems"
    - "montiarc architectural modeling of interactive distributed and cyber physical systems"
    - "view based modeling of function nets"

Connected through hyperedge HE-2 (induced by source paper "montiarc architectural modeling of interactive distributed and cyber physical systems"):
  with members:
    - "towards a system model for uml the structural data model"
    - "efficient editor generation for compositional dsls in eclipse"
    - "towards a family based analysis of applicability conditions in architectural delta models"
    - "monticore a framework for compositional development of domain specific languages"
    - "modelling automotive function nets with views for features variants and modes"
    - "delta modeling for software architectures"
    - "monticore modular development of textual domain specific languages"
    - "design guidelines for domain specific languages"

Connected through hyperedge HE-3 (induced by source paper "cd2alloy class diagrams analysis using alloy revisited"):
  with members:
    - "semantically configurable consistency analysis for class and object 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"
    - "the uml as a formal modeling notation"
    - "system model based definition of modeling language semantics"

Connected through hyperedge HE-4 (induced by source paper "semantically configurable consistency analysis for class and object diagrams"):
  with members:
    - "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"
    - "the uml as a formal modeling notation"
    - "variability within modeling language definitions"

Connected through hyperedge HE-5 (induced by source paper "cddiff semantic differencing for class diagrams"):
  with members:
    - "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"
    - "the uml as a formal modeling notation"

Connected through hyperedge HE-6 (induced by source paper "modal object diagrams"):
  with members:
    - "monticore a framework for compositional development of domain specific languages"
    - "cddiff semantic differencing for class diagrams"
    - "developing the uml as a formal modelling notation"
    - "the uml as a formal modeling notation"

Connected through hyperedge HE-7 (induced by source paper "a manifesto for semantic model differencing"):
  with members:
    - "monticore a framework for compositional development of domain specific languages"
    - "developing the uml as a formal modelling notation"
    - "the uml as a formal modeling notation"

Connected through hyperedge HE-8 (induced by source paper "system model based definition of modeling language semantics"):
  with members:
    - "monticore modular development of textual domain specific languages"
    - "theorem proving support in programming language semantics"
    - "towards a precise semantics for object oriented modeling techniques"

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)