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: "laboratory test bench for research network and cloud computing"
  Abstract: At present moment,#R##N#there is a great interest in development of information systems operating in#R##N#cloud infrastructures. Generally, many of tasks remain unresolved such as tasks#R##N#of optimization of large databases in a hybrid cloud infrastructure, quality of#R##N#service (QoS) at different levels of cloud services, dynamic control of#R##N#distribution of cloud resources in application systems and many others.#R##N#Research and development of new solutions can be limited in case of using emulators#R##N#or international commercial cloud services, due to the closed architecture and#R##N#limited opportunities for experimentation. Article provides answers to#R##N#questions on the establishment of a pilot cloud practically “at home” with the#R##N#ability to adjust the width of the emulation channel and delays in data#R##N#transmission. It also describes architecture and configuration of the#R##N#experimental setup. The proposed modular structure can be expanded by available#R##N#computing power.

Connected through hyperedge HE-1 (induced by source paper "virtual laboratories in cloud infrastructure of educational institutions"):
  with members:
    - "optimal control of applications for hybrid cloud services"
    - "use of dynamical systems modeling to hybrid cloud database"

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.DC(Distributed, Parallel, and Cluster Computing)