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: "an operational semantics for activity diagrams using smv"
  Abstract: This document defines an operational semantics for activity diagrams (ADs) using a translation to SMV. The translation is inspired by the work of Eshuis [Esh06] and extends it with support for data. Each execution step of the SMV module obtained from an AD represents an executed action of this AD with interleaved execution of concurrent branches. An implementation of the given translation was used in the context of semantic differencing for ADs [MRR11]. We define the translation and give two examples, showing ADs and their complete representation in SMV.

Connected through hyperedge HE-1 (induced by source paper "an interim summary on semantic model differencing"):
  with members:
    - "cddiff semantic differencing for class diagrams"
    - "summarizing semantic model differences"
    - "a manifesto for semantic model differencing"
    - "addiff semantic differencing for activity diagrams"

Connected through hyperedge HE-2 (induced by source paper "summarizing semantic model differences"):
  with members:
    - "cddiff semantic differencing for class diagrams"
    - "a manifesto for semantic model differencing"
    - "the uml as a formal modeling notation"
    - "addiff semantic differencing for activity diagrams"

Connected through hyperedge HE-3 (induced by source paper "addiff semantic differencing for activity diagrams"):
  with members:
    - "monticore a framework for compositional development of domain specific languages"
    - "cddiff semantic differencing for class diagrams"
    - "a manifesto for semantic model differencing"

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)