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: "integrating abstractions to enhance the execution of distributed applications"
  Abstract: One of the factors that limits the scale, performance, and sophistication of distributed applications is the difficulty of concurrently executing them on multiple distributed computing resources. In part, this is due to a poor understanding of the general properties and performance of the coupling between applications and dynamic resources. This paper addresses this issue by integrating abstractions representing distributed applications, resources, and execution processes into a pilot-based middleware. The middleware provides a platform that can specify distributed applications, execute them on multiple resource and for different configurations, and is instrumented to support investigative analysis. We analyzed the execution of distributed applications using experiments that measure the benefits of using multiple resources, the late-binding of scheduling decisions, and the use of backfill scheduling.

Connected through hyperedge HE-1 (induced by source paper "radical cybertools middleware building blocks for scalable science"):
  with members:
    - "rapid concurrent and adaptive extreme scale binding free energy calculation"
    - "extasy scalable and flexible coupling of md simulations and advanced sampling techniques"
    - "repex a flexible framework for scalable replica exchange molecular dynamics simulations"
    - "using pilot systems to execute many task workloads on supercomputers"

Connected through hyperedge HE-2 (induced by source paper "synapse synthetic application profiler and emulator"):
  with members:
    - "ensemble toolkit scalable and flexible execution of ensembles of tasks"
    - "a comprehensive perspective on pilot job systems"
    - "radical pilot scalable execution of heterogeneous and dynamic workloads on supercomputers"
    - "simgrid a sustained effort for the versatile simulation of large scale distributed systems"

Connected through hyperedge HE-3 (induced by source paper "designing workflow systems using building blocks"):
  with members:
    - "synapse synthetic application profiler and emulator"
    - "converging high throughput and high performance computing a case study"
    - "microservices yesterday today and tomorrow"
    - "ensemble toolkit scalable and flexible execution of ensembles of tasks"
    - "extasy scalable and flexible coupling of md simulations and advanced sampling techniques"
    - "analysis of distributed execution of workloads"
    - "repex a flexible framework for scalable replica exchange molecular dynamics simulations"
    - "executing dynamic and heterogeneous workloads on super computers"

Connected through hyperedge HE-4 (induced by source paper "analysis of distributed execution of workloads"):
  with members:
    - "synapse synthetic application profiler and emulator"
    - "ensemble toolkit scalable and flexible execution of ensembles of tasks"
    - "a comprehensive perspective on pilot job systems"
    - "executing dynamic and heterogeneous workloads on super computers"

Connected through hyperedge HE-5 (induced by source paper "ensemble toolkit scalable and flexible execution of ensembles of tasks"):
  with members:
    - "extasy scalable and flexible coupling of md simulations and advanced sampling techniques"
    - "repex a flexible framework for scalable replica exchange molecular dynamics simulations"
    - "radical pilot scalable execution of heterogeneous and dynamic workloads on supercomputers"

Connected through hyperedge HE-6 (induced by source paper "executing dynamic and heterogeneous workloads on super computers"):
  with members:
    - "ensemble toolkit scalable and flexible execution of ensembles of tasks"
    - "repex a flexible framework for scalable replica exchange molecular dynamics simulations"
    - "p a model of pilot abstractions"

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)