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: "k pg shared state in differential dataflows"
  Abstract: Many of the most popular scalable data-processing frameworks are fundamentally limited in the generality of computations they can express and efficiently execute. In particular, we observe that systems' abstractions limit their ability to share and reuse indexed state within and across computations. These limitations result in an inability to express and efficiently implement algorithms in domains where the scales of data call for them most. In this paper, we present the design and implementation of K-Pg, a data-processing framework that provides high-throughput, low-latency incremental view maintenance for a general class of iterative data-parallel computations. This class includes SQL, stratified Datalog with negation and non-monotonic aggregates, and much of graph processing. Our evaluation indicates that K-Pg's performance is either comparable to, or exceeds, that of specialized systems in multiple domains, while at the same time significantly generalizing their capabilities.

Connected through hyperedge HE-1 (induced by source paper "online analysis of distributed dataflows with timely dataflow"):
  with members:
    - "graph matching networks for learning the similarity of graph structured objects"
    - "community structure in large networks natural cluster sizes and the absence of large well defined clusters"

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)