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: "moderately complex paxos made simple high level specification of distributed algorithm"
  Abstract: This paper presents simpler specifications of more complex variants of the Paxos algorithm for distributed consensus, as a case study of high-level specification of distributed algorithms. The development of the specifications uses a method and language for expressing complex control flows and synchronization conditions precisely at a high level. #R##N#We show that English and pseudocode descriptions of algorithms can be captured precisely at a high level, yielding clearer and simpler specifications than ever before. The resulting specifications have allowed us to easily discover a main liveness violation that was unknown in a previous specification. We also show that the resulting specifications can be executed directly and optimized cleanly, yielding drastic performance improvement. Finally, we show that the resulting specifications can be formally verified using a proof system, with proofs an order of magnitude smaller than prior proofs, and allowing us to detect and fix a subtle safety violation that was unknown in an early specification.

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)