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: "a cyber physical system based approach for industrial automation systems"
  Abstract: Industrial automation systems (IASs) are commonly developed using the languages defined by the IEC 61131 standard and are executed on PLCs. In this paper, a system-based approach for the development of IASs is adopted. A framework is described to refine the UML model of the software part, which is extracted from the SysML system model, and get the implementation code. Two implementation alternatives are considered to exploit PLCs but also the recent deluge of embedded boards in the market. For PLC targets, the new version of IEC 61131 that supports Object-Orientation is adopted, while Java is used for embedded boards. The case study was developed as a lab exercise for teaching the various technologies that address challenges in the domain of cyber-physical systems where Internet of Things (IoT) would be the glue regarding their cyber interfaces.

Connected through hyperedge HE-1 (induced by source paper "future developments in standardisation of cyber risk in the internet of things iot"):
  with members:
    - "a reference architecture for integrating the industrial internet of things in the industry 4 0"
    - "definition of internet of things iot cyber risk discussion on a transformation roadmap for standardisation of regulations risk maturity strategy design and impact assessment"
    - "sonification in security operations centres what do security practitioners think"
    - "if you can t understand it you can t properly assess it the reality of assessing security risks in internet of things systems"
    - "economic impact of iot cyber risk analysing past and present to predict the future developments in iot risk analysis and iot cyber insurance"
    - "future developments in cyber risk assessment for the internet of things"
    - "security risk assessment in internet of things systems"

Connected through hyperedge HE-2 (induced by source paper "data management in industry 4 0 state of the art and open challenges"):
  with members:
    - "avoiding the internet of insecure industrial things"
    - "energy optimization of robotic cells"
    - "sre semantic rules engine for the industrial internet of things gateways"
    - "covert attacks in cyber physical control systems"
    - "acceleration of a full scale industrial cfd application with op2"
    - "intercept behavior analysis of industrial wireless sensor networks in the presence of eavesdropping attack"

Connected through hyperedge HE-3 (induced by source paper "a reference architecture for integrating the industrial internet of things in the industry 4 0"):
  with members:
    - "future developments in standardisation of cyber risk in the internet of things iot"
    - "economic impact of iot cyber risk analysing past and present to predict the future developments in iot risk analysis and iot cyber insurance"
    - "future developments in cyber risk assessment for the internet of things"
    - "autonomous driving 5 years after the urban challenge the anticipatory vehicle as a cyber physical system"
    - "internet of things iot a vision architectural elements and future directions"

Connected through hyperedge HE-4 (induced by source paper "cpus iot a cyber physical microservice and iot based framework for manufacturing assembly systems"):
  with members:
    - "cyber physical microservices an iot based framework for manufacturing systems"
    - "microservices yesterday today and tomorrow"
    - "an open distributed architecture for flexible hybrid assembly systems a model driven engineering approach"

Connected through hyperedge HE-5 (induced by source paper "cyber physical microservices an iot based framework for manufacturing systems"):
  with members:
    - "microservices yesterday today and tomorrow"
    - "building critical applications using microservices"

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)