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: "cyber virtual systems simulation validation visualization"
  Abstract: We describe our ongoing work and view on simulation, validation and visualization of cyber-physical systems in industrial automation during development, operation and maintenance. System models may represent an existing physical part - for example an existing robot installation - and a software simulated part - for example a possible future extension. We call such systems cyber-virtual systems. #R##N#In this paper, we present the existing VITELab infrastructure for visualization tasks in industrial automation. The new methodology for simulation and validation motivated in this paper integrates this infrastructure. We are targeting scenarios, where industrial sites which may be in remote locations are modeled and visualized from different sites anywhere in the world. #R##N#Complementing the visualization work, here, we are also concentrating on software modeling challenges related to cyber-virtual systems and simulation, testing, validation and verification techniques for them. Software models of industrial sites require behavioural models of the components of the industrial sites such as models for tools, robots, workpieces and other machinery as well as communication and sensor facilities. Furthermore, collaboration between sites is an important goal of our work.

Connected through hyperedge HE-1 (induced by source paper "on decision support for remote industrial facilities using the collaborative engineering framework"):
  with members:
    - "operators for space and time in bespaced"
    - "an example for bespaced and its use for decision support in industrial automation"
    - "bespaced towards a tool framework and methodology for the specification and verification of spatial behavior of distributed software component systems"

Connected through hyperedge HE-2 (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"
    - "from abstract modelling to remote cyber physical integration interoperability testing"

Connected through hyperedge HE-3 (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"
    - "from abstract modelling to remote cyber physical integration interoperability testing"
    - "human factors of formal methods"
    - "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-4 (induced by source paper "spatio temporal features of focusst"):
  with members:
    - "human factors in software reliability engineering"
    - "from abstract modelling to remote cyber physical integration interoperability testing"
    - "human factors of formal methods"

Connected through hyperedge HE-5 (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"
    - "from abstract modelling to remote cyber physical integration interoperability testing"

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)