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: "a comprehensive evaluation of rdma enabled concurrency control protocols"
  Abstract: On-line transaction processing (OLTP) applications require efficient distributed transaction execution. When a transaction accesses multiple records in remote machines, network performance is a crucial factor affecting transaction latency and throughput. Due to its high bandwidth and very low latency, RDMA (Remote Direct Memory Access) has achieved much higher performance for distributed transactions than traditional TCP-based systems. RDMA provides primitives for both two-sided and one-sided communication. Although recent works have intensively studied the benefits of RDMA in distributed transaction systems, they either focus on primitive-level comparisons of two communication models (one-sided vs. two-sided) or only study one concurrency control protocol. A comprehensive understanding of the implication of RDMA for various concurrency control protocols is an open problem. #R##N#In this paper, we build RCC, the first unified and comprehensive RDMA-enabled distributed transaction processing framework supporting six concurrency control protocols using either two-sided or one-sided primitives. We intensively optimize the performance of each protocol without bias, using known techniques such as co-routines, outstanding requests, and doorbell batching. Based on RCC, we conduct the first and most comprehensive (to the best of our knowledge) study of the six representative distributed concurrency control protocols on two clusters with different RDMA network capabilities.

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)