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: "integrated definition of abstract and concrete syntax for textual languages"
  Abstract: An understandable concrete syntax and a comprehensible abstract syntax are two central aspects of defining a modeling language. Both representations of a language significantly overlap in their structure and also information, but may also differ in parts of the information. To avoid discrepancies and problems while handling the language, concrete and abstract syntax need to be consistently defined. This will become an even bigger problem, when domain specific languages will become used to a larger extent. In this paper we present an extended grammar format that avoids redundancy between concrete and abstract syntax by allowing an integrated definition of both for textual modeling languages. For an amendment of the usability of the abstract syntax it furthermore integrates meta-modeling concepts like associations and inheritance into a well-understood grammar-based approach. This forms a sound foundation for an extensible grammar and therefore language definition.

Connected through hyperedge HE-1 (induced by source paper "modeling reusable platform independent robot assembly processes"):
  with members:
    - "efficient editor generation for compositional dsls in eclipse"
    - "black box integration of heterogeneous modeling languages for cyber physical systems"
    - "monticore a framework for compositional development of domain specific languages"
    - "from software architecture structure and behavior modeling to implementations of cyber physical systems"
    - "a new skill based robot programming language using uml p statecharts"
    - "a graphical language for real time critical robot commands"
    - "events reactivity in urbiscript"
    - "on reverse engineering the kuka robot language"

Connected through hyperedge HE-2 (induced by source paper "simulations on consumer tests systematic evaluation of tolerance ranges by model based generation of simulation scenarios"):
  with members:
    - "efficient editor generation for compositional dsls in eclipse"
    - "monticore a framework for compositional development of domain specific languages"
    - "simulations on consumer tests a perspective for driver assistance systems"
    - "monticore modular development of textual domain specific languages"

Connected through hyperedge HE-3 (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"
    - "system model semantics of class diagrams"
    - "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"

Connected through hyperedge HE-4 (induced by source paper "system model semantics of class diagrams"):
  with members:
    - "towards a system model for uml the structural data model"
    - "monticore modular development of textual domain specific languages"
    - "an algebraic view on the semantics of model composition"
    - "system model semantics of statecharts"

Connected through hyperedge HE-5 (induced by source paper "monticore a framework for compositional development of domain specific languages"):
  with members:
    - "efficient editor generation for compositional dsls in eclipse"
    - "monticore modular development of textual domain specific languages"
    - "an algebraic view on the semantics of model composition"
    - "packrat parsing simple powerful lazy linear time"

Connected through hyperedge HE-6 (induced by source paper "monticore modular development of textual domain specific languages"):
  with members:
    - "efficient editor generation for compositional dsls in eclipse"
    - "modelling automotive function nets with views for features variants and modes"
    - "packrat parsing simple powerful lazy linear time"

Connected through hyperedge HE-7 (induced by source paper "using lightweight activity diagrams for modeling and generation of web information systems"):
  with members:
    - "towards a semantics of activity diagrams with semantic variation points"
    - "monticore a framework for compositional development of domain specific languages"
    - "montiweb modular development of web information systems"

Connected through hyperedge HE-8 (induced by source paper "montiweb modular development of web information systems"):
  with members:
    - "efficient editor generation for compositional dsls in eclipse"
    - "monticore modular development of textual domain specific languages"

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)