human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "global grids and software toolkits a study of four grid middleware technologies"):
  Abstract: Grid is an infrastructure that involves the integrated and collaborative use of computers, networks,#R##N#databases and scientific instruments owned and managed by multiple organizations. Grid applications often involve#R##N#large amounts of data and/or computing resources that require secure resource sharing across organizational#R##N#boundaries. This makes Grid application management and deployment a complex undertaking. Grid middlewares#R##N#provide users with seamless computing ability and uniform access to resources in the heterogeneous Grid#R##N#environment. Several software toolkits and systems have been developed, most of which are results of academic#R##N#research projects, all over the world. This chapter will focus on four of these middlewares—UNICORE, Globus,#R##N#Legion and Gridbus. It also presents our implementation of a resource broker for UNICORE as this functionality#R##N#was not supported in it. A comparison of these systems on the basis of the architecture, implementation model and#R##N#several other features is included.

Includes members:
  Member "a grid service broker for scheduling distributed data oriented applications on global grids":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a case for cooperative and incentive based coupling of distributed clusters")
  Member "alchemi a net based grid computing framework and its integration into global grids":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "the gridbus toolkit for service oriented grid and utility computing an overview and status report")
  Member "the gridbus toolkit for service oriented grid and utility computing an overview and status report":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "scheduling in grid computing environment")
  Member "economic based distributed resource management and scheduling for grid computing":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "delivering it as a utility a systematic review")
  Member "the anatomy of the grid enabling scalable virtual organizations":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "serverless supercomputing high performance function as a service for science")

Question: Please tell me which class the source paper 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)