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: "from abstract modelling to remote cyber physical integration interoperability testing"
  Abstract: An appropriate system model gives developers a better overview, and the ability to fix more inconsistencies more effectively and earlier in system development, reducing overall effort and cost. However, modelling assumes abstraction of several aspects of the system and its environment, and this abstraction should be not overlooked, but properly taken into account during later development phases. This is especially especially important for the cases of remote integration, testing/verification, and manufacturing of cyber-physical systems. For this reason we introduce a development methodology for cyber-physical systems (CPS) with a focus on the abstraction levels of the system representation, based on the idea of refinement-based development of complex, interactive systems.

Connected through hyperedge HE-1 (induced by source paper "towards software development for social robotics systems"):
  with members:
    - "software engineering solutions to support vertical transportation"
    - "model based hazard and impact analysis"
    - "cyber virtual systems simulation validation visualization"

Connected through hyperedge HE-2 (induced by source paper "towards a human centred approach in modelling and testing of cyber physical systems"):
  with members:
    - "human factors in software reliability engineering"
    - "agile test based modeling"
    - "human factors of formal methods"
    - "cyber virtual systems simulation validation visualization"
    - "towards system development methodologies from software to cyber physical domain"
    - "assumptions underlying agile software development processes"
    - "verified system development with the autofocus tool chain"

Connected through hyperedge HE-3 (induced by source paper "spatio temporal features of focusst"):
  with members:
    - "human factors in software reliability engineering"
    - "human factors of formal methods"
    - "cyber virtual systems simulation validation visualization"

Connected through hyperedge HE-4 (induced by source paper "the virtual experiences lab a platform for global collaborative engineering and beyond"):
  with members:
    - "bespaced towards a tool framework and methodology for the specification and verification of spatial behavior of distributed software component systems"
    - "cyber virtual systems simulation validation visualization"

Connected through hyperedge HE-5 (induced by source paper "requirements engineering aspects of a geographically distributed architecture"):
  with members:
    - "human factors of formal methods"
    - "verified system development with the autofocus tool chain"

Connected through hyperedge HE-6 (induced by source paper "cyber virtual systems simulation validation visualization"):
  with members:
    - "human factors of formal methods"
    - "do we really need to write documentation for a system case tool add ons generator editor for a precise documentation"
    - "towards system development methodologies from software to cyber physical domain"
    - "stream processing components isabelle hol formalisation and case studies"
    - "towards a framework for behavioral specifications of osgi components"

Connected through hyperedge HE-7 (induced by source paper "formalisation and analysis of component dependencies"):
  with members:
    - "towards system development methodologies from software to cyber physical domain"
    - "stream processing components isabelle hol formalisation and case studies"

Connected through hyperedge HE-8 (induced by source paper "stream processing components isabelle hol formalisation and case studies"):
  with members:
    - "towards system development methodologies from software to cyber physical domain"
    - "towards focus on time"

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)