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: "towards a family based analysis of applicability conditions in architectural delta models"
  Abstract: Modeling variability in software architectures is a fundamental part of software product line development. ?-MontiArc allows describing architectural variability in a modular way by a designated core architecture and a set of architectural delta models modifying the core architecture to realize other architecture variants. Delta models have to satisfy a set of applicability conditions for the definedness of the architectural variants. The applicability conditions can in principle be checked by generating all possible architecture variants, which requires considering the same intermediate architectures repeatedly. In order to reuse previously computed architecture variants, we propose a family-based analysis of the applicability conditions using the concept of inverse deltas.

Connected through hyperedge HE-1 (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"
    - "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"
    - "design guidelines for domain specific languages"

Connected through hyperedge HE-2 (induced by source paper "evolving delta oriented software product line architectures"):
  with members:
    - "delta modeling for software architectures"
    - "montiarc architectural modeling of interactive distributed and cyber physical systems"
    - "hierarchical variability modeling for software architectures"
    - "delta oriented architectural variability using monticore"

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)