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: "sky an opinion dynamics framework and model for consensus over p2p network"
  Abstract: The decentralized nature of P2P network increases robustness because it removes single points of failure, however, traditional Byzantine consensus does not work in P2P network due to Sybil attack while existing Sybil-proof consensus based on compute power can't resist adversary with dominant compute power. We proposed the sky framework to apply opinion dynamics in P2P network for consensus, as well as the sky model to maximize performance. The sky framework is Sybil-proof through trust relationships and with it consensus may emerge from local interactions of each node with its direct contacts without topology, global information or even sample of the network involved. The sky model has better performance of convergence than existing models in literatures, and its lower bound of fault tolerance performance is also analyzed and proved. Comparing to compute power based consensus, our approach enables disarming faulty or potentially malicious nodes by unfollowing them. To the best of our knowledge, it's the first work to bring opinion dynamics to P2P network for consensus.

Connected through hyperedge HE-1 (induced by source paper "skyhash a hash opinion dynamics model"):
  with members:
    - "sky opinion dynamics based consensus for p2p network with trust relationships"
    - "on subversive miner strategies and block withholding attack in bitcoin digital currency"
    - "the impact of network flows on community formation in models of opinion dynamics"

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)