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: "tycoon a distributed market based resource allocation system"
  Abstract: P2P clusters like the Grid and PlanetLab enable in principle the same statistical multiplexing efficiency gains for computing as the Internet provides for networking. The key unsolved problem is resource allocation. Existing solutions are not economically efficient and require high latency to acquire resources. We designed and implemented Tycoon, a market based distributed resource allocation system based on an Auction Share scheduling algorithm. Preliminary results show that Tycoon achieves low latency and high fairness while providing incentives for truth-telling on the part of strategic users .

Connected through hyperedge HE-1 (induced by source paper "minimal economic distributed computing"):
  with members:
    - "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 "providing virtual execution environments a twofold illustration"):
  with members:
    - "a price anticipating resource allocation mechanism for distributed shared clusters"

Connected through hyperedge HE-3 (induced by source paper "a taxonomy of peer to peer based complex queries a grid perspective"):
  with members:
    - "sla based coordinated superscheduling scheme and performance for computational grids"
    - "a case for cooperative and incentive based coupling of distributed clusters"
    - "monalisa a distributed monitoring service architecture"
    - "grid market directory a web services based grid service publication directory"
    - "a performance study of monitoring and information services for distributed systems"

Connected through hyperedge HE-4 (induced by source paper "sla based coordinated superscheduling scheme and performance for computational grids"):
  with members:
    - "a case for cooperative and incentive based coupling of distributed clusters"
    - "gridsim a toolkit for the modeling and simulation of distributed resource management and scheduling for grid computing"

Connected through hyperedge HE-5 (induced by source paper "a case for cooperative and incentive based coupling of distributed clusters"):
  with members:
    - "a grid service broker for scheduling distributed data oriented applications on global grids"
    - "libra an economy driven job scheduling system for clusters"
    - "gridsim a toolkit for the modeling and simulation of distributed resource management and scheduling for grid computing"
    - "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)