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: "economic based distributed resource management and scheduling for grid computing"
  Abstract: Computational Grids, emerging as an infrastructure for next generation computing, enable the sharing, selection, and aggregation of geographically distributed resources for solving large-scale problems in science, engineering, and commerce. As the resources in the Grid are heterogeneous and geographically distributed with varying availability and a variety of usage and cost policies for diverse users at different times and, priorities as well as goals that vary with time. The management of resources and application scheduling in such a large and distributed environment is a complex task. This thesis proposes a distributed computational economy as an effective metaphor for the management of resources and application scheduling. It proposes an architectural framework that supports resource trading and quality of services based scheduling. It enables the regulation of supply and demand for resources and provides an incentive for resource owners for participating in the Grid and motives the users to trade-off between the deadline, budget, and the required level of quality of service. The thesis demonstrates the capability of economic-based systems for peer-to-peer distributed computing by developing users' quality-of-service requirements driven scheduling strategies and algorithms. It demonstrates their effectiveness by performing scheduling experiments on the World-Wide Grid for solving parameter sweep applications.

Connected through hyperedge HE-1 (induced by source paper "delivering it as a utility a systematic review"):
  with members:
    - "service level agreement sla in utility computing systems"
    - "sla oriented resource provisioning for cloud computing challenges architecture and solutions"
    - "market oriented cloud computing vision hype and reality for delivering it services as computing utilities"
    - "cloud computing and grid computing 360 degree compared"
    - "utility computing and global grids"
    - "the gridbus toolkit for service oriented grid and utility computing an overview and status report"
    - "a deadline and budget constrained cost time optimisation algorithm for scheduling task farming applications on global grids"
    - "nimrod g an architecture for a resource management and scheduling system in a global computational grid"

Connected through hyperedge HE-2 (induced by source paper "an economic based resource management and scheduling for grid computing applications"):
  with members:
    - "a deadline and budget constrained cost time optimisation algorithm for scheduling task farming applications on global grids"
    - "nimrod g an architecture for a resource management and scheduling system in a global computational grid"

Connected through hyperedge HE-3 (induced by source paper "critical analysis of middleware architectures for large scale distributed systems"):
  with members:
    - "the community authorization service status and future"
    - "the anatomy of the grid enabling scalable virtual organizations"

Connected through hyperedge HE-4 (induced by source paper "global grids and software toolkits a study of four grid middleware technologies"):
  with members:
    - "a grid service broker for scheduling distributed data oriented applications on global grids"
    - "alchemi a net based grid computing framework and its integration into global grids"
    - "the gridbus toolkit for service oriented grid and utility computing an overview and status report"
    - "the anatomy of the grid enabling scalable virtual organizations"

Connected through hyperedge HE-5 (induced by source paper "the gridbus toolkit for service oriented grid and utility computing an overview and status report"):
  with members:
    - "a grid service broker for scheduling distributed data oriented applications on global grids"
    - "alchemi a net based grid computing framework and its integration into global grids"
    - "gridscape a tool for the creation of interactive and dynamic grid testbed web portals"
    - "gridemail a case for economically regulated internet based interpersonal communications"
    - "nimrod g an architecture for a resource management and scheduling system in a global computational grid"

Connected through hyperedge HE-6 (induced by source paper "alchemi a net based grid computing framework and its integration into global grids"):
  with members:
    - "the anatomy of the grid enabling scalable virtual organizations"
    - "nimrod g an architecture for a resource management and scheduling system in a global computational grid"

Connected through hyperedge HE-7 (induced by source paper "grid market directory a web services based grid service publication directory"):
  with members:
    - "economic and on demand brain activity analysis on global grids"
    - "the anatomy of the grid enabling scalable virtual organizations"

Connected through hyperedge HE-8 (induced by source paper "economic and on demand brain activity analysis on global grids"):
  with members:
    - "grid market directory a web services based grid service publication directory"
    - "the anatomy of the grid enabling scalable virtual organizations"

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)