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: "autonomic cloud computing open challenges and architectural elements"
  Abstract: As Clouds are complex, large-scale, and heterogeneous distributed systems, management of their resources is a challenging task. They need automated and integrated intelligent strategies for provisioning of resources to offer services that are secure, reliable, and cost-efficient. Hence, effective management of services becomes fundamental in software platforms that constitute the fabric of computing Clouds. In this direction, this paper identifies open issues in autonomic resource provisioning and presents innovative management techniques for supporting SaaS applications hosted on Clouds. We present a conceptual architecture and early results evidencing the benefits of autonomic management of Clouds.

Connected through hyperedge HE-1 (induced by source paper "a deep learning based approach to vm behavior identification in cloud systems"):
  with members:
    - "batch normalization accelerating deep network training by reducing internal covariate shift"
    - "adam a method for stochastic optimization"
    - "a taxonomy and survey of energy efficient data centers and cloud computing systems"

Connected through hyperedge HE-2 (induced by source paper "ddos attacks in cloud computing"):
  with members:
    - "cloud based ddos attacks and defenses"
    - "enhanced cbf packet filtering method to detect ddos attack in cloud computing environment"
    - "botnet based distributed denial of service ddos attacks on web servers classification and art"
    - "an isp level solution to combat ddos attacks using combined statistical based approach"

Connected through hyperedge HE-3 (induced by source paper "agri info cloud based autonomic system for delivering agriculture as a service"):
  with members:
    - "transformative effects of iot blockchain and artificial intelligence on cloud computing evolution vision trends and open challenges"
    - "internet of things iot a vision architectural elements and future directions"

Connected through hyperedge HE-4 (induced by source paper "using object relational mapping to create the distributed databases in a hybrid cloud infrastructure"):
  with members:
    - "optimal control of applications for hybrid cloud services"
    - "concept of feedback in future computing models to cloud systems"
    - "virtual laboratories in cloud infrastructure of educational institutions"
    - "use of dynamical systems modeling to hybrid cloud database"

Connected through hyperedge HE-5 (induced by source paper "concept of feedback in future computing models to cloud systems"):
  with members:
    - "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)