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: "flexible development of dependability services an experience derived from energy automation systems"
  Abstract: This paper describes an approach for the flexible development of dependable automation services starting from their requirements. The approach is presented through the use of a case study in the field of energy automation systems. The approach is based on the use of a custom compositional recovery language that allows one to achieve, in software, a flexible and dependable solution for the specified requirements. The qualitative and quantitative properties of different configurations of the solution are then assessed by modelling, using stochastic Petri nets.

Connected through hyperedge HE-1 (induced by source paper "trading off complexity for expressiveness in programming languages visions and preliminary experiences"):
  with members:
    - "design tool to express failure detection protocols"

Connected through hyperedge HE-2 (induced by source paper "tapping into the wells of social energy a case study based on falls identification"):
  with members:
    - "how resilient are our societies analyses models and preliminary results"
    - "service oriented communities visions and contributions towards social organizations"
    - "quality indicators for collective systems resilience"
    - "mutualistic relationships in service oriented communities and fractal social organizations"

Connected through hyperedge HE-3 (induced by source paper "mathcal r raise2pt hbox varepsilon hbox mathcal l a fault tolerance linguistic structure for distributed applications"):
  with members:
    - "a hypermedia distributed application for monitoring and fault injection in embedded fault tolerant parallel programs"

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)